Cool-Power®
ZVS Switching Regulators
PI3740-00
8V – 60VIN , 10V – 50VOUT , 50 – 140W Cool-Power ZVS Buck-Boost Regulator
Product Description
Features & Benefits
The PI3740-00 is a high efficiency, wide input and output range
DC-DC ZVS Buck-Boost Regulator. This high density System-inPackage (SiP) integrates controller, power switches, and support
components. The integration of a high performance Zero-Voltage
Switching (ZVS) topology within the PI3740-00 increases point of
load performance, providing best in class power efficiency.
• Up to 96% efficiency
• 50 – 140W continuous output power
• Parallel capable with single wire current sharing
• External frequency synchronization / interleaving
• High Side Current Sense Amplifier
The PI3740-00 requires an external inductor, resistive divider and
minimal capacitors to form a complete DC–DC switching mode
buck-boost regulator.
Device
PI3740-00-LGIZ
• General Purpose Amplifier
• Lighting / Constant Current Mode (LGH)
• Input Over / Undervoltage Lockout (OVLO / UVLO)
Output Voltage
Set
Range
12V
10 to 50V
• Output Overvoltage Protection (OVP)
• Overtemperature Protection (OTP)
• Fast and slow current limits
The ZVS architecture also enables high frequency operation while
minimizing switching losses and maximizing efficiency. The high
switching frequency operation reduces the size of the external
filtering components, improves power density, and enables fast
dynamic response to line and load transients.
• -40°C to 115°C operating range (TJ)
• Excellent light load efficiency
Applications
• Battery Charging and Conditioning, Telecom,
Networking, Lighting
• Computing, Communications, Industrial,
Automotive Accessories
• 12V, 24V, 48V and 60V DC–DC Applications
Package Information
• 10mm x 14mm x 2.56mm LGA SiP
Typical Application
VS1
VIN
CIN
VS2 VOUT
PGND
PGND
ISP
COUT
R1
R2
ISN
VDR
10k
PI3740-00
IMON
VSN
VSP
PGD
VDIFF
EN
LGH
SYNCO
EAIN
SYNCI
TRK
CTRK
Cool-Power® ZVS Switching Regulators
Page 1 of 48
Rev 1.1
02/2017
EAO
SGND
COMP
CHF
CCOMP
vicorpower.com
800 927.9474
PI3740-00
Contents
Order Information
3
Absolute Maximum Ratings
3
Output Voltage Trim
22
Pin Description
4
Soft-Start Adjustment and Tracking
22
Package Pin-Out
5
Inductor Pairing
22
Storage and Handling Information
6
Filter Considerations
23
Block Diagram
6
Thermal Design
26
PI3740-00-LGIZ Electrical Characteristics
7
Thermal Design Inductor
28
PI3740-00-LGIZ Performance Characteristics
22
PI3740-00-LGIZ Percentage of SiP Loss to Total Loss
30
MTBF 19
Evaluation Board Thermal De-rating
32
Functional Description
20
Parallel Operation
34
Enable
20
Synchronization 34
Switching Frequency Synchronization
20
Interleaving 34
Soft-Start and Tracking
20
Small Signal Models CV-CC Modes
Remote Sensing Differential Amplifier
20
Small Signal Model – Constant Voltage Mode
35
Power Good
20
Error Amplifier
35
Output Current Limit Protection
20
Lighting Mode (LGH)
35
Input Undervoltage Lockout
20
LGH Amplifier Small Signal Model
36
Input Overvoltage Lockout
20
VDR Bias Regulator
36
Output Overvoltage Protection
21
PI3740-00-LGIZ Modulator Gain / Output Resistance
37
Overtemperature Protection
21
System Design Considerations
44
Pulse Skip Mode (PSM)
21
Package Drawings
45
Variable Frequency Operation
21
Receiving PCB Pattern Design Recommendations
46
IMON Amplifier
21
Revision History
47
Product Warranty
48
Cool-Power® ZVS Switching Regulators
Page 2 of 48
11
Application Description
Rev 1.1
02/2017
vicorpower.com
800 927.9474
35
PI3740-00
Order Information
Part Number
Description
Package
Transport Media
MFG
PI3740-00-LGIZ
VIN 8 – 60V, VOUT 10 – 50V
10mm x 14mm 108-pin LGA
TRAY
Vicor
Absolute Maximum Ratings
Note: Stresses beyond these limits may cause permanent damage to the device. Operation at these conditions or conditions beyond those listed in the
Electrical Specifications table is not guaranteed. All voltage nodes are referenced to PGND unless otherwise noted.
Location
VMIN
ISOURCE
[1]
40A [1]
75V
-0.3V
4–5, G–K
VS1
75V
-0.7VDC
40A [1]
18A [1]
10–11, G–K
VS2
75V
-0.7VDC
40A [1]
18A [1]
13–14, G–K
VOUT
75V
-0.7VDC
40A [1]
40A [1]
1E
VDR
5.5V
-0.3V
30mA
200mA
1D
PGD
5.5V
-0.3V
20mA
20mA
1C
SYNCO
5.5V
-0.3V
5mA
5mA
1B
SYNCI
5.5V
-0.3V
5mA
5mA
1A
FT1
5.5V
-0.3V
5mA
5mA
2A
FT2
5.5V
-0.3V
5mA
5mA
3A
FT3
5.5V
-0.3V
5mA
5mA
4A
FT4
5.5V
-0.3V
10mA
10mA
5A
EN
5.5V
-0.3V
5mA
5mA
6A
TRK
5.5V
-0.3V
50mA
50mA
7A
LGH
5.5V
-0.3V
5mA
5mA
8A
COMP
5.5V
-0.3V
5mA
5mA
9A
VSN
5.5V
-1.5V
5mA
5mA
10A
VSP
5.5V
-1.5V
5mA
5mA
11A
VDIFF
5.5V
-0.5V
5mA
5mA
12A
EAIN
5.5V
-0.3V
5mA
5mA
13A
EAO
5.5V
-0.3V
5mA
5mA
14A
IMON
5.5V
-0.3V
5mA
5mA
14D
ISN
[2]
75V
-2VDC
5mA
5mA
ISP
[2]
75V
-2VDC
5mA
5mA
SGND
0.3V
-0.3V
200mA
200mA
[1]
18A [1]
2–9, B–E + 7–8, F–K
PGND
N/A
N/A
Non-Operating Test Mode Limits.
The ISP pin to ISN pin has a maximum differential limit of +5.5VDC and -0.5VDC.
Cool-Power® ZVS Switching Regulators
Page 3 of 48
Rev 1.1
02/2017
vicorpower.com
800 927.9474
40A
ISINK
VIN
10–14, B + 10–12, C–E
[2]
VMAX
1–2, G–K
14E
[1]
Name
18A
PI3740-00
Pin Description
Pin Number
Pin Name
Description
1–2, G–K
VIN
Input voltage and sense node for UVLO, OVLO and feed forward compensation.
4–5, G–K
VS1
Input side switching node and ZVS sense node for power switches.
10–11, G–K
VS2
Output side switching node and ZVS sense node for power switches.
13–14, G–K
VOUT
1E
VDR
Internal 5.1V supply for gate drivers and internal logic. May be used as reference or low power bias supply
for up to 2mA. Must be impedance limited by the user.
1D
PGD
Fault & Power Good indicator. PGD pulls low when the regulator is not operating or if EAIN is less
than 1.4V.
1C
SYNCO
Synchronization output. Outputs a high signal for ½ of the programmed switching period at the beginning
of each switching cycle, for synchronization of other regulators.
1B
SYNCI
Synchronization input. When a falling edge synchronization pulse is detected, the PI3740-00 will delay
the start of the next switching cycle until the next falling edge sync pulse arrives, up to a maximum delay
of two times the programmed switching period. If the next pulse does not arrive within two times the
programmed switching period, the controller will leave sync mode and start a switching cycle automatically.
Connect to SGND when not in use.
1A
FT1
For factory use only. Connect to SGND or leave floating in application.
2A
FT2
For factory use only. Connect to SGND or leave floating in application.
3A
FT3
For factory use only. Connect to SGND in application.
4A
FT4
For factory use only. Connect to SGND in application.
5A
EN
Regulator Enable control. Asserted high or left floating – regulator enabled;
Asserted low, regulator output disabled.
6A
TRK
Soft-start and track input. An external capacitor must be connected between TRK pin and SGND to
decrease the rate of output rise during soft-start. Recommended value is 47nF for 1.6ms rise.
7A
LGH
Input for constant current lighting amplifier. Connect to SGND if not in use.
8A
COMP
9A
VSN
General purpose amplifier inverting input.
10A
VSP
General purpose amplifier non-inverting input.
11A
VDIFF
General Purpose amplifier output. When unused connect VDIFF to VSN and VSP to SGND.
12A
EAIN
Error amplifier inverting input and sense for PGD. Connect by resistive divider to the output.
13A
EAO
Error amp output: External connection for additional compensation and current sharing. Add 56pF
capacitor from EAO to SGND.
14A
IMON
14D
ISN
High side current sense amplifier negative input.
14E
ISP
High side current sense amplifier positive input.
10–14, B + 10–12, C–E
SGND
Signal ground. Internal logic and analog ground for the regulator. SGND and PGND are star connected
within the regulator package.
2–9, B–E + 7–-8, F–K
PGND
Power ground. VIN, VOUT, VS1 and VS2 power returns. SGND and PGND are star connected within the
regulator package.
Cool-Power® ZVS Switching Regulators
Page 4 of 48
Output voltage and sense node for power switches, VOUT feed forward compensation, VOUT_OV
and internal signals.
Error amp compensation dominant pole. Connect a capacitor of 4700pF by default between COMP and
SGND to set the control loop dominant pole.
High side current sense amplifier output.
Rev 1.1
02/2017
vicorpower.com
800 927.9474
PI3740-00
Package Pin-Out
1
FT1
SYNCI
SYNC0
PGD
VDR
VIN
VIN
VIN
VIN
2
FT2
PGND
PGND
PGND
PGND
VIN
VIN
VIN
VIN
3
FT3
PGND
PGND
PGND
PGND
4
FT4
PGND
PGND
PGND
PGND
VS1
VS1
VS1
VS1
5
EN
PGND
PGND
PGND
PGND
VS1
VS1
VS1
VS1
6
TRK
PGND
PGND
PGND
PGND
7
FT5
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
8
COMP
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
9
VSN
PGND
PGND
PGND
PGND
10
VSP
SGND
SGND
SGND
SGND
VS2
VS2
VS2
VS2
11
VDIFF
SGND
SGND
SGND
SGND
VS2
VS2
VS2
VS2
12
EAIN
SGND
SGND
SGND
SGND
13
EAO
SGND
VOUT
VOUT
VOUT
VOUT
14
IMON
SGND
VOUT
VOUT
VOUT
VOUT
ISN
ISP
Large Pin Blocks
Pin Block Name
Group of pins
VIN
G1-2, H1-2, J1-2, K1-2
VS1
G4-5, H4-5, J4-5, K4-5
PGND
B2-9, C2-9, D2-9, E2-9, F7-8, G7-8, H7-8, J7-8, K7-8
VS2
G10-11, H10-11, J10-11, K10-11
VOUT
G13-14, H13-14, J13-14, K13-14
SGND
B10-14, C10-12, D10-12, E10-12
Cool-Power® ZVS Switching Regulators
Page 5 of 48
Rev 1.1
02/2017
vicorpower.com
800 927.9474
PI3740-00
Storage and Handling Information
Storage Temperature
-65°C to 150°C
Internal Operating Temperature
-40°C to 115°C
Soldering Temperature for 20 seconds
245°C
MSL Rating
3
ESD Rating
[3]
[3]
2.0kV HBM; 1.0kV CDM
JS-200-2014, JESD22-A114F.
Block Diagram
LEXT
VIN
VOUT
Q1
Q3
VS1
+
VS2
Q2
Q4
+
VDR
Power
Control
VDR
ISN
ISP
IMON
VSN
VSP
VDIFF
LGH
+ 0.1V
VCC
ZVS Buck Boost Control
SYNCO
SYNCI
and
FLT
EN
+ 1.7V
Digital Parametric Trim
EAIN
EAO
COMP
TRK
PGND
100pF
0Ω
Rev 1.1
02/2017
FT1
FT2
FT3
FT4
SGND
Cool-Power® ZVS Switching Regulators
Page 6 of 48
vicorpower.com
800 927.9474
PI3740-00
PI3740-00-LGIZ Electrical Characteristics
Specifications apply for the conditions -40°C < TJ < 115°C, VIN = 24V, VOUT = 12V, LEXT = 420nH[4], external CIN = 6 x 2.2µF, external COUT = 8 x 10µF,
unless otherwise noted.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
8
24
60
V
Input Specifications
Input Voltage
Input Current During Output Short
(fault condition duty cycle)
VIN_DC
IIN_SHORT
[5]
3.75
mA
Input Quiescent Current
IQ_VIN
Enabled (no load)
5
mA
Input Quiescent Current
IQ_VIN
Disabled
2
mA
VIN_SR
[5]
Input Voltage Slew Rate
Internal Input Capacitance
CIN
VIN UVLO threshold rising
VIN_UVLO_START
VIN UVLO hysteresis
VIN OVLO threshold rising
VIN OVLO hysteresis
1
25°C, VIN = 48V
0.5
6.6
VIN_UVLO_HYS
6.9
µF
7.2
0.5
VIN_OVLO_START
61.0
VIN_OVLO_HYS
64.5
V / µs
V
V
68.0
1.3
V
V
Output Specifications
EAIN Voltage Total Regulation
VOUT_DC
Output Voltage Range
VOUT_DC
Output Current Range
IOUT_DCR
Output Current Steady State
IOUT_DC
Output Power Steady State
POUT_DC
Maximum Array Size
NPARALLEL
[6]
1.667
1.7
1.734
V
10
12
50
V
See note 6
A
0
VIN = 8 – 16V, VOUT ≤ 12V, TCASE =
25°C[6]
VIN = 16 – 24V, VOUT ≤ 12V, TCASE =
25°C[6]
VIN = 8 – 60V, VOUT = 12 – 36V, TCASE = 25°C[6]
VIN = 16 – 28V, VOUT = 24 – 36V, TCASE =
25°C[6]
5.0
A
6.5
60
W
123
3
Modules
Output Current, array of 2
IOUT_DC-ARRAY2
Total array capability, see applications section for details
0
1.77* IOUT_DC
Output Current, array of 3
IOUT_DC-ARRAY3
Total array capability, see applications section for details
0
2.54* IOUT_DC
Line Regulation
∆VOUT (∆VIN)
@ 25°C, 8V < VIN < 60V
0.10
%
Load Regulation
∆VOUT (∆IOUT)
@ 25°C, IOUT above 5% of the typical full load
0.10
%
96
mVp-p
0.75
µF
Output Ripple
VOUT_AC
Internal Output Capacitance
COUT
VOUT Overvoltage Threshold
VOUT_OVT
VOUT Overvoltage Hysteresis
VOUT_OVH
IOUT = 7.0A, VIN = 24V, VOUT = 12V, TCASE = 25°C
COUT_EX = 8 x 10µF, 50V, X7R, 20MHz BW
25°C, VOUT = 24V
Rising VOUT threshold to detect open loop
51.0
52.0
53.5
1.0
A
V
V
VDR
VDR Supply Voltage
VDR
Generated internally
External Loading
IVDR
See Application Description for details
[4]
[5]
[6]
4.9
0
See Inductor Pairing section.
Assured to meet performance specification by design, test correlation, characterization, and/or statistical process control.
Output current capability varies with input & output voltage. See rated ouput current / power curves on page 9.
Cool-Power® ZVS Switching Regulators
Page 7 of 48
Rev 1.1
02/2017
vicorpower.com
800 927.9474
5.1
5.36
V
2
mA
PI3740-00
PI3740-00-LGIZ Electrical Characteristics (Cont.)
Specifications apply for the conditions -40°C < TJ < 115°C, VIN = 24V, VOUT = 12V, LEXT = 420nH[4], external CIN = 6 x 2.2µF, external COUT = 8 x 10µF,
unless otherwise noted.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
150
260
µA
Current Sense Amplifier (Dedicated to monitor Input or Output Current)
ISP Pin Bias Current (Sink)
VOUT = 10V, Flows to SGND
ISN Pin Bias Current
VOUT = 10V
90
0
Common Mode Input Range
8
IMON Source Current
1
IMON Sink Current
1
IMON Output at No Load
µA
60
V
1.8
3
mA
1.6
2.6
mA
15
Full Scale Error
40mV input
Bandwidth
[5]
40
kHz
Settling Time for Full Scale Step
1%
20
µs
15mV measured across 5mΩ shunt
20
V/V
Gain
AV_CS
-4
mV
4
%
General Purpose Amplifier
Open Loop Gain
[5]
96
120
140
dB
Small Signal Gain-Bandwidth
[5]
5
7
12
MHz
-1
1
mV
-0.1
2.5
V
2
V
VDR – 0.2V
V
20
mV
100
pF
Offset
Common Mode Input Range
Differential Mode Input Range
Maximum Output Voltage
IDIFF = -1mA
Minimum Output Voltage
No Load
Capacitive Load for Stable
Operation
[5]
0
Slew Rate
10
Output Current
-1
V / µs
1
mA
105
mV
Current Amplifier (LGH)
Reference
95
Input Offset
0.5
Gain-Bandwidth Product
3
Internal Feedback Capacitance
[4]
[5]
[6]
Rev 1.1
02/2017
vicorpower.com
800 927.9474
mV
MHz
20
See Inductor Pairing section.
Assured to meet performance specification by design, test correlation, characterization, and/or statistical process control.
Output current capability varies with input & output voltage. See rated ouput current / power curves on page 9.
Cool-Power® ZVS Switching Regulators
Page 8 of 48
100
pF
PI3740-00
PI3740-00-LGIZ Electrical Characteristics (Cont.)
Specifications apply for the conditions -40°C < TJ < 115°C, VIN = 24V, VOUT = 12V, LEXT = 420nH[4], external CIN = 6 x 2.2µF, external COUT = 8 x 10µF,
unless otherwise noted.
Parameter
Symbol
Conditions
Min
Typ
Max
EAIN = EAO, 25ºC
1.688
1.7
1.712
EAIN = EAO
1.674
1.7
1.726
Unit
Transconductance Error Amplifier
Reference
VREF
Input Range
VEAIN
Note VEAIN_OV below
0
Maximum Output Voltage
3.35
Minimum Output Voltage
V
VDR
V
3.6
4.0
V
0.05
0.15
V
Transconductance
Factory Set
7.6
mS
Zero Resistor
Factory Set
5
kΩ
EAO Output Current Sourcing
VEAO = 50mV, VEAIN = 0V
400
µA
EAO Output Current Sinking
VEAO = 2V, VEAIN = 5V
400
µA
Open Loop Gain
ROUT > 1MΩ
[5]
80
dB
Input Capacitance
70
56
pF
Output Capacitance
1
pF
1
MHz
0.4
V
Control and Protection
Switching Frequency
VEAO Pulse Skip Threshold
Control Node Range
VEAO Overload Threshold
Overload Timeout
FSW
VEAO_PST
VRAMP
VEAO to SGND
TOL
VEAO > VEAO_OL
IOUT_EAOLIM
VEAIN Output Over Voltage
Threshold
VEAIN_OV
Overtemperature Restart Hysteresis
0
VEAO_OL
Overload due to EAO limit
Overtemperature Fault Threshold
VEAO to SGND
3.175
Module shuts down after 1ms of overload and restarts
after 30ms
VEAIN > VEAIN_OV
1.94
3.3
3.3
V
3.425
V
1
ms
7.7
A
2.04
2.14
V
TOTP
[5]
125
°C
TOPT_HYS
[5]
30
°C
VOUT Negative Fault Threshold
-0.45
-0.25
-0.15
V
1.7
V
70
mV
Soft Start and Tracking Function
TRK Active Range
Nominal
0
TRK Disable Threshold
20
TRK Internal Capacitance
56
Soft Start Charge Current
30
Soft Start Discharge Current
Soft Start Time
[4]
[5]
[6]
45
VTRK = 0.5V
tSS
Ext CSS = 47nF
See Inductor Pairing section.
Assured to meet performance specification by design, test correlation, characterization, and/or statistical process control.
Output current capability varies with input & output voltage. See rated ouput current / power curves on page 9.
Cool-Power® ZVS Switching Regulators
Page 9 of 48
Rev 1.1
02/2017
vicorpower.com
800 927.9474
50
pF
70
µA
9
mA
1.6
ms
PI3740-00
PI3740-00-LGIZ Electrical Characteristics (Cont.)
Specifications apply for the conditions -40°C < TJ < 115°C, VIN = 24V, VOUT = 12V, LEXT = 420nH[4], external CIN = 6 x 2.2µF, external COUT = 8 x 10µF,
unless otherwise noted.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Enable
Enable High Threshold
ENIH
0.9
1
1.1
V
Enable Low Threshold
ENIL
0.7
0.8
0.9
V
ENHYS
100
200
300
mV
Enable Threshold Hysteresis
Enable Pin Bias Current
VEN = 0V or VEN = 2V
±50
µA
Enable Pull-up Voltage
Floating
2.0
V
30
ms
1/2 VDR
V
Fault Restart Delay Time
tFR_DLY
Digital Signals
SYNCI High Threshold
VDR = 5.1V
SYNCO High
SYNCOOH
SYNCO Low
SYNCOOL
VDR
V
ISYNCOUT = 1mA
VDR – 0.5
0.5
V
PGD High Leakage
PGDILH
VPGD = VDR
10
µA
PGD Output Low
PGDOL
IPGD = 4mA
0.4
V
PGD EAIN Low Rise
1.41
1.45
1.48
V
PGD EAIN Low Fall
1.36
1.41
1.46
V
PGD EAIN Threshold Hysteresis
35
PGD EAIN High
1.94
[4]
See Inductor Pairing section.
Assured to meet performance specification by design, test correlation, characterization, and/or statistical process control.
[6] Output current capability varies with input & output voltage. See rated ouput current / power curves on page 9.
[5]
Cool-Power® ZVS Switching Regulators
Page 10 of 48
Rev 1.1
02/2017
vicorpower.com
800 927.9474
2.04
mV
2.14
V
PI3740-00
PI3740-00-LGIZ Performance Characteristics TPCB = 25°C [7]
160
Rated Output Power (W)
Rated Output Current (A)
8
7
6
5
4
3
2
1
140
120
100
80
60
40
20
0
0
5
10
15
20
25
30
35
40
45
50
55
5
60
10
15
20
25
10VOUT
24VOUT
12VOUT
28VOUT
10VOUT
18VOUT
36VOUT
24VOUT
50VOUT
Figure 1 — Output Current of PI3740-00-LGIZ
45
50
55
60
12VOUT
28VOUT
18VOUT
36VOUT
50VOUT
95
Efficiency (%)
Efficiency (%)
40
100
95
90
85
80
90
85
80
75
70
0
1
2
3
4
5
6
7
75
8
0
1
2
Output Current (A)
8VIN
12VIN
3
4
5
6
7
Output Current (A)
18VIN
16VIN
36VIN
28VIN
48VIN
24VIN
8VIN
60VIN
12VIN
28VIN
Figure 3 — 10VOUT Efficiency
18VIN
16VIN
36VIN
48VIN
24VIN
60VIN
Figure 5 — 18VOUT Efficiency
100
100
95
95
Efficiency (%)
Efficiency (%)
35
Figure 2 — Output Power of PI3740-00-LGIZ
100
90
85
80
75
90
85
80
75
70
0
1
2
3
4
5
6
7
8
70
0
1
2
Output Current (A)
8VIN
12VIN
28VIN
18VIN
16VIN
36VIN
48VIN
24VIN
60VIN
8VIN
12VIN
28VIN
Figure 6 — 24VOUT Efficiency
Note: Testing was performed using a 3in. x 3in., four 2oz. copper layers, FR4 evaluation board platform.
Cool-Power® ZVS Switching Regulators
Page 11 of 48
3
5
4
6
Output Current (A)
Figure 4 — 12VOUT Efficiency
[7]
30
Input Voltage (V)
Input Voltage (V)
Rev 1.1
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16VIN
36VIN
18VIN
48VIN
24VIN
60VIN
PI3740-00
PI3740-00-LGIZ Performance Characteristics TPCB = 25°C (Cont.) [7]
100
100
95
Efficiency (%)
Efficiency (%)
95
90
85
80
75
90
85
80
75
70
65
0
1
2
3
4
5
0
1
Output Current (A)
8VIN
12VIN
28VIN
18VIN
16VIN
36VIN
48VIN
24VIN
8VIN
12VIN
28VIN
60VIN
Figure 7 — 28VOUT Efficiency
Figure 9 — 50VOUT Efficiency
100
98
Efficiency (%)
96
94
92
90
88
86
84
82
80
0
1
2
3
4
Output Current (A)
8VIN
12VIN
28VIN
16VIN
36VIN
18VIN
48VIN
24VIN
60VIN
Figure 8 — 36VOUT Efficiency
[7]
Note: Testing was performed using a 3in. x 3in., four 2oz. copper layers, FR4 evaluation board platform.
Cool-Power® ZVS Switching Regulators
Page 12 of 48
2
3
Output Current (A)
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18VIN
16VIN
36VIN
48VIN
24VIN
60VIN
PI3740-00
PI3740-00-LGIZ Performance Characteristics TPCB = 25°C (Cont.) [7]
1200
Operational Frequency (kHz)
Operational Frequency (kHz)
1200
1000
1000
800
600
400
200
800
600
400
200
0
0
0
1
2
3
4
5
6
7
0
8
1
2
8VIN
12VIN
28VIN
16VIN
18VIN
48VIN
36VIN
8VIN
24VIN
4
5
6
7
16VIN
18VIN
48VIN
36VIN
24VIN
60VIN
Figure 12 — Switching Frequency vs. Output Current @ 18VOUT
1200
1200
Operational Frequency (kHz)
Operational Frequency (kHz)
12VIN
28VIN
60VIN
Figure 10 — Switching Frequency vs. Output Current @ 10VOUT
1000
800
600
400
200
0
0
1
2
3
4
5
6
7
8
1000
800
600
400
200
0
0
1
2
8VIN
12VIN
28VIN
18VIN
16VIN
36VIN
48VIN
24VIN
8VIN
12VIN
28VIN
60VIN
Figure 11 — Switching Frequency vs. Output Current @ 12VOUT
4
5
6
Rev 1.1
02/2017
16VIN
36VIN
18VIN
48VIN
24VIN
60VIN
Figure 13 — Switching Frequency vs. Output Current @ 24VOUT
Note: Testing was performed using a 3in. x 3in., four 2oz. copper layers, FR4 evaluation board platform.
Cool-Power® ZVS Switching Regulators
Page 13 of 48
3
Output Current (A)
Output Current (A)
[7]
3
Output Current (A)
Output Current (A)
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PI3740-00
PI3740-00-LGIZ Performance Characteristics TPCB = 25°C (Cont.) [7]
1200
Operational Frequency (kHz)
Operational Frequency (kHz)
1200
1000
800
600
400
200
0
0
1
2
4
3
5
Output Current (A)
8VIN
12VIN
28VIN
18VIN
16VIN
36VIN
48VIN
24VIN
60VIN
1000
800
600
400
200
0
0
1
8VIN
12VIN
28VIN
Figure 14 — Switching Frequency vs. Output Current @ 28VOUT
Operational Frequency (kHz)
1000
800
600
400
200
0
1
2
3
4
Output Current (A)
8VIN
12VIN
28VIN
18VIN
16VIN
36VIN
48VIN
24VIN
60VIN
Figure 15 — Switching Frequency vs. Output Current @ 36VOUT
[7]
Note: Testing was performed using a 3in. x 3in., four 2oz. copper layers, FR4 evaluation board platform.
Cool-Power® ZVS Switching Regulators
Page 14 of 48
Rev 1.1
02/2017
3
16VIN
36VIN
18VIN
48VIN
24VIN
60VIN
Figure 16 — Switching Frequency vs. Output Current @ 50VOUT
1200
0
2
Output Current (A)
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PI3740-00-LGIZ Performance Characteristics TPCB = 25°C (Cont.)
Figure 17 — Output voltage ripple at 24VIN to 10VOUT, 7.3A;
COUT = 8 x 10µF Ceramic
Figure 19 — Output voltage ripple at 24VIN to 18VOUT, 6.3A;
COUT = 8 x 10µF Ceramic
Figure 18 — Output voltage ripple at 24VIN to 12VOUT, 6.75A;
COUT = 8 x 10µF Ceramic
Figure 20 — Output voltage ripple at 24VIN to 24VOUT, 5.3A;
COUT = 8 x 10µF Ceramic
Cool-Power® ZVS Switching Regulators
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PI3740-00
PI3740-00-LGIZ Performance Characteristics TPCB = 25°C (Cont.)
Figure 21 — Output voltage ripple at 24VIN to 28VOUT, 4.5A;
COUT = 8 x 10µF Ceramic
Figure 23 — Output voltage ripple at 24VIN to 50VOUT, 2.50A;
COUT = 8 x 2.2µF Ceramic
Figure 22 — Output voltage ripple at 24VIN to 36VOUT, 3.65A;
COUT = 8 x 10µF Ceramic
Cool-Power® ZVS Switching Regulators
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PI3740-00
PI3740-00-LGIZ Performance Characteristics TPCB = 25°C (Cont.)
Figure 24 — 24VIN to 10VOUT, COUT = 8 x 10µF Ceramic
3.5A to 7.0A Load Step, 0.1A/µs
Figure 27 — 24VIN to 28VOUT, COUT = 8 x 10µF Ceramic
2.25A to 4.5A Load Step, 0.1A/µs
Figure 25 — 24VIN to 12VOUT, COUT = 8 x 10µF Ceramic
3.38A to 6.75A Load Step, 0.1A/µs
Figure 28 — 24VIN to 36VOUT, COUT = 8 x 10µF Ceramic
1.5A to 3.0A Load Step, 0.1A/µs
Figure 26 — 24VIN to 24VOUT, COUT = 8 x 10µF Ceramic
2.5A to 5.0A Load Step, 0.1A/µs
Figure 29 — 24VIN to 50VOUT, COUT = 8 x 2.2µF Ceramic
2.5A to 1.25A Load Step, 0.1A/µs
Cool-Power® ZVS Switching Regulators
Page 17 of 48
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PI3740-00
PI3740-00-LGIZ Performance Characteristics TPCB = 25°C (Cont.)
Figure 30 — Start-up with 8VIN to 24VOUT at 2.4A,
Ext CSS = 47nF
Figure 33 — Start-up with 24VIN to 10VOUT at 6.5A,
Ext CSS = 47nF
Figure 31 — Start-up with 8VIN to 12VOUT at 5A,
Ext CSS = 47nF
Figure 34 — Start-up with 8VIN to 36VOUT at 1.7A,
Ext CSS = 47nF
Figure 32 — Start-up with 24VIN to 12VOUT at 6A,
Ext CSS = 47nF
Figure 35 — Start-up with 24VIN to 36VOUT at 2A,
Ext CSS = 47nF
Cool-Power® ZVS Switching Regulators
Page 18 of 48
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MTBF
MTBF (Mhrs)
1000
100
10
1
-60
-40
-20
0
20
40
60
80
100
Temperature (°C)
MTBF Calculations Over Temperature Using Telcordia SR-332
Figure 36 — PI3740-00 calculated MTBF Telcordia SR-332 GB\
Cool-Power® ZVS Switching Regulators
Page 19 of 48
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140
PI3740-00
Functional Description
The PI3740-00 is a highly integrated ZVS Buck-Boost regulator.
The PI3740-00 has an adjustable output voltage that is set with
a resistive divider. Performance and maximum output current
are characterized with a specific external power inductor as
defined in the electrical specifications, and in the inductor
pairing section.
VS1
VIN
CIN
VS2 VOUT
PGND
PGND
ISP
Remote Sensing Differential Amplifier
COUT
A general purpose operational amplifier is provided to assist
with differential remote sensing and/or level shifting of the
output voltage. The VDIFF pin can be connected to the
transconductance error amplifier input EAIN pin, or with proper
configuration can also be connected to the EAO pin to drive the
modulator directly. If unused, connect in unity gain with VSP
connected to SGND.
R1
R2
ISN
VDR
10kΩ
PI3740-00
IMON
VSN
VSP
PGD
VDIFF
EN
LGH
SYNCO
EAIN
SYNCI
TRK
CTRK
capacitor from the TRK pin to SGND in addition to the internal
56pF soft-start capacitor to set the start-up ramp period equal
to tSS. The recommended value is 47nF. The PI3740-00 internal
reference and regulated output will proportionally follow the
TRK ramp when it is below 1.7VDC. When the ramp is greater
than 1.7VDC, the internal reference will remain at 1.7VDC while
the TRK ramp rises and clamps at 2.5VDC. If the TRK pin goes
below the disable threshold, the regulator will finish the current
switching cycle and then stop switching.
EAO
SGND
COMP
Power Good
CHF
The PI3740-00 PGD pin functions as a power good indicator and
pulls low when the regulator is not operating or if EAIN is less
than 1.4V.
CCOMP
Output Current Limit Protection
Figure 37 — PI3740-00 with required components
PI3740-00 has three methods implemented to protect from
output short circuit or over current condition.
For basic operation, Figure 37 shows the minimum connections
and components required.
Enable
The EN pin of the regulator is referenced to SGND and permits
the user to turn the regulator on or off. The EN polarity is a
positive logic assertion. If the EN pin is left floating or asserted
high, the regulator output is enabled. Pulling the EN pin below
0.8VDC with respect to SGND will discharge the TRK pin until
the output reaches zero or the EN pin is released. When the
converter is disabled via the EN pin or due to a fault mode, the
internal gate driver high side charge pumps are enabled as long
as there is enough input voltage for the internal VDR supply
voltage to be available. The return path for this charge pump
supply is through the output. If the output load is disconnected
or high impedance, the output capacitors will float up to
about 3.4V maximum, sourced by 960µA of leakage current.
This pre-biased condition poses no issue for the converter.
The 960µA leakage current may be safely bypassed to SGND.
A simple application circuit is available to bypass this current
in a non-dissipative manner. Please contact Applications
Engineering for details.
Fast Current Limit protection: monitors the external inductor
current pulse-by-pulse to prevent the output from supplying
saturation current. If the regulator senses a high inductor
current pulse, it will initiate a fault and stop switching. After
the Fault Restart Delay (tFR_DLY ), a soft-start cycle is initiated.
This restart cycle will be repeated indefinitely until the excessive
load is removed.
Overload Timeout protection: If the regulator is providing
greater than the maximum output power for longer than the
Overload Timeout delay (TOL), it will initiate a fault and stop
switching. After Fault Restart Delay (tFR_DLY ), a soft-start cycle is
initiated. This restart cycle will be repeated indefinitely until the
overload load is removed.
Input Undervoltage Lockout
Switching Frequency Synchronization
The SYNCI input allows the user to synchronize the controller
switching frequency to the falling edge of an external clock
referenced to SGND. The external clock can synchronize the
unit between 50% and 110% of the preset switching frequency
(FSW ). The SYNCI pin should be connected to SGND when not in
use, and should never be left floating.
Soft-Start and Tracking
The PI3740-00 provides a soft start and tracking feature using
the TRK pin. Programmable Soft Start requires an external
Cool-Power® ZVS Switching Regulators
Page 20 of 48
Slow Current Limit protection: prevents the regulator load
from sourcing current higher than the maximum rated regulator
current. If the output current exceeds the VOUT Slow Current
Limit (VOUT_SCL) a slow current limit fault is initiated and the
regulator is shutdown, which eliminates output current flow.
After the Fault Restart Delay (tFR_DLY ), a soft-start cycle is
initiated. This restart cycle will be repeated indefinitely until the
excessive load is removed.
Rev 1.1
02/2017
If VIN falls below the input Undervoltage Lockout (UVLO)
threshold, the PI3740-00 will complete the current cycle and
stop switching. The system will restart once the input voltage
is reestablished.
Input Overvoltage Lockout
If VIN rises above the input Overvoltage Lockout (OVLO)
threshold, the PI3740-00 will complete the current cycle and
stop switching. The system will restart once the input voltage is
reestablished and after the Fault Restart Delay.
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Output Overvoltage Protection
The PI3740-00 is equipped with two methods of detecting
an output over voltage condition. To prevent damage to input
voltage sensitive devices, if the output voltage exceeds 20% of
its set regulated value as measured by the EAIN pin (VEAIN_OV ),
the regulator will complete the current cycle, stop switching and
issue an OVP fault. Also if the output voltage of the regulator
exceeds the VOUT Overvoltage Threshold (VOUT_OVT ) then the
regulator will complete the current cycle, stop switching and
issue an OVP fault. The system will resume operation once
the output voltage falls below the OVP threshold and after
Fault Restart Delay.
Overtemperature Protection
The PI3740-00 features an over temperature protection (OTP),
which will not engage until after the product is operated
above the maximum rated temperature. The OTP circuit is only
designed to protect against catastrophic failure due to excessive
temperatures and should not be relied upon to ensure the device
stays within the recommended operating temperature range.
Thermal shutdown terminates switching and discharges the
soft-start capacitor. As the temperature falls the PI3740-00 will
restart, and this will always occur before the product returns to
rated temperature range.
Pulse Skip Mode (PSM)
PI3740-00 features a hysteretic Pulse Skip Mode to achieve high
efficiency at light loads. The regulator is setup to skip pulses if
VEAO falls below the Pulse Skip Threshold (VEAO_PST ). Depending
on conditions and component values, this may result in single
pulses or several consecutive pulses followed by skipped pulses.
Skipping cycles significantly reduces gate drive power and
improves light load efficiency. The regulator will leave Pulse Skip
Mode once the control node rises above the Pulse Skip Mode
threshold (VEAO_PST ).
Variable Frequency Operation
The PI3740-00 is preprogrammed to a fixed, maximum, base
operating frequency. The frequency is selected with respect to
the required power stage inductor to operate at peak efficiency
across line and load variations. The switching frequency period
will stretch as needed during each cycle to accommodate low
line and or high load conditions. By stretching the switching
frequency period, thus decreasing the switching frequency, the
ZVS operation is preserved throughout the input line voltage
range maintaining optimum efficiency.
IMON Amplifier
The PI3740-00 provides a differential amplifier with a level
shifted, SGND referenced output, the IMON Pin, which is useful
for sensing input or output current on high voltage rails. A fixed
gain of 20:1 is provided over a large common mode range.
When using the amplifier, the ISN pin must be referenced to
the common mode voltage of the ISP pin for proper operation.
See Absolute Maximum Ratings for more information. If not in
use, the ISN and ISP pins should be connected to SGND and the
IMON pin left floating.
Cool-Power® ZVS Switching Regulators
Page 21 of 48
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Application Description
Output Voltage Trim
The output voltage can be adjusted by feeding back a portion
of the desired output through a voltage divider to the error
amplifier’s input (see Figure 37). Equation 1 can be used to
determine resistor values needed for the voltage divider.
R1 = R2 •
(
VOUT
1.7
)
For Direct Tracking, choose the regulator with the highest output
voltage as the master and connect the master to the TRK pin
of the other regulators through a divider (Figure 39) with the
same ratio as the slave’s feedback divider (see Output Voltage
Trim). The TRK pin should not be driven without 1kΩ minimum
series resistance.
Master VOUT
(1)
-1
PI3740
R1
TRK
Slave
The R2 value is selected by the user; a 1.65kΩ resistor value
is recommended.
If, for example, a 12V output is needed, the user can select a
1.65kΩ (1%) resistor for R2 and use Equation (1) to calculate R1.
Once R1 value is calculated, the user should select the nearest
resistor value available. In this example, R1 is 9.997kΩ so a
10.0kΩ should be selected.
Soft-Start Adjustment and Tracking
The TRK pin offers a means to increase the regulator’s soft-start
time or to track with additional regulators. The soft-start slope is
controlled by an external capacitor and a fixed charge current to
provide the startup ramp. The following equation can be used to
calculate the proper capacitor for a desired soft-start time:
CTRK =
(tTRK • ISS )
1.7
(2)
– 56 • 10 -12
Where tTRK is the desired soft-start time and ISS is the TRK pin
source current (see Electrical Characteristics for limits).
SGND
Figure 39 — Voltage divider connections for direct tracking
All connected regulators’ soft-start slopes will track with this
method. Direct tracking timing is demonstrated in Figure 38
(b). All tracking regulators should have their Enable (EN) pins
connected together for proper operation.
Inductor Pairing
Operations and characterization of the PI3740-00 was
performed using a 420nH inductor, Part # HCV1206-R42-R,
manufactured by Eaton. This Inductor has a form factor of
12.5mm x 10mm x 5mm. No other inductor is recommended for
use with the PI3740-00. For additional inductor information and
sourcing, please contact Eaton directly.
The PI3740-00 allows the tracking of multiple like regulators.
Two methods of tracking can be chosen: proportional or direct
tracking. Proportional tracking will force all connected
regulators to startup and reach regulation at the same time
(see Figure 38 (a)). To implement proportional tracking, simply
connect all devices TRK pins together.
VOUT 1
VOUT 2
Propor onal
Tracking
(a)
Master VOUT
VOUT 2
Direct
Tracking
(b)
t
Figure 38 — PI3740-00 tracking methods
Cool-Power® ZVS Switching Regulators
Page 22 of 48
Rev 1.1
02/2017
R2
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PI3740-00
Filter Considerations
The PI3740-00 requires low impedance ceramic input capacitors
(X7R/X5R or equivalent) to ensure proper start up and high
frequency decoupling for the power stage. The PI3740-00
will draw nearly all of the high frequency current from the
low impedance ceramic capacitors when the main high side
MOSFET(s) are conducting. During the time the MOSFET(s) are
off, the input capacitors are replenished from the source. Table 1
shows the recommended input and output capacitors to be used
for the PI3740-00. Divide the total RMS current by the number
of ceramic capacitors used to calculate the individual capacitor’s
RMS current. Table 2 includes the recommended input and
output ceramic capacitor. It is very important to verify that the
voltage supply source as well as the interconnecting line are
stable and do not oscillate.
Input Filter case 1; Inductive source and local, external, input
decoupling capacitance with negligible ESR (i.e.: ceramic type)
The voltage source impedance can be modeled as a series Rline
Lline circuit. The high performance ceramic decoupling capacitors
will not significantly damp the network because of their low ESR;
therefore in order to guarantee stability the following conditions
must be verified:
Rline >
(C
IN_INT
Lline
+ CIN_EXT
)• r
(3)
EQ_IN
Input Filter case 2; Inductive source and local, external input
decoupling capacitance with significant RCIN_EXT ESR
(i.e.: electrolytic type)
In order to simplify the analysis in this case, the voltage source
impedance can be modeled as a simple inductor Lline. Notice
that the high performance ceramic capacitors CIN_INT within
the PI3740-00 should be included in the external electrolytic
capacitance value for this purpose. The stability criteria will be:
(5)
rEQ_IN > RCIN_EXT
Lline
CIN_INT • RCIN_EXT
(6)
< rEQ_IN
Equation (6) shows that if the aggregate ESR is too small – for
example by using very high quality input capacitors (CIN_EXT )
– the system will be under-damped and may even become
destabilized. Again, an octave of design margin in satisfying
Equation (5) should be considered the minimum.
Note: When applying an electrolytic capacitor for input
filter damping the ESR value must be chosen to avoid loss of
converter efficiency and excessive power dissipation in the
electrolytic capacitor.
(4)
Rline 400µA
1
2 • π • ((RLED + RSHUNT)//rEQ • COUT
(16)
When regulating in CC mode, it will be necessary to add a
compensating zero to avoid loss of phase margin caused by the
integrator stage of the LGH amplifier. A simple approach is to
add a series R–C in parallel with RLGH as shown in the lighting
application diagram in Figure 59. The capacitor will be chosen
to work with RLGH to add a zero approximately 1.2kHz before
the zero provided by the GMLGH transfer function (the transconductance stage of the LGH amplifier). The external added
resistor will form a high frequency pole to roll the gain off at
higher frequency. Note that it is very important to understand the
AC resistance of the LED’s that are being used. Please consult the
LED manufacturer for details. For a series string, you should add
the individual LED resistances and combine them into one lumped
value to simplify the analysis.
VDR Bias Regulator
LGH Amplifier Small Signal Model
A small signal model of the LGH amplifier is shown in Figure 60.
400µA
IEAO
The VDR internal bias regulator is a ZVS switching regulator that
resides internal to the PI3740-00 SiP. It is intended primarily to
power the internal controller and driver circuitry. The power
capability of this regulator is sized only for the PI3740-00, with
adequate reserve for the application it was intended for. It may be
used as a pull-up source for open collector applications and for
other very low power uses with the following restrictions:
VEAO
GMLGH
CINT
VLGH
RZI
+
+
+
CHF
RZI
ROUT
nn
No direct connection is allowed. Any noise source that can
disturb the VDR voltage can also affect the internal controller
operation. A series impedance is required between the VDR pin
and any external circuitry.
CCOMP
EINT
ELS
Figure 60 — LGH Amplifier Small Signal Model
The LGH amplifier consists of three distinct stages. The first is
a wide bandwidth integrator stage, followed by a fixed gain
level shift circuit. Finally, the level shift circuit drives a transconductance (TCA) amplifier with an open collector sink only
output stage. Since the LGH output is internally connected to
the output of the voltage error amplifier, the compensation
components show up in the model and are used by both stages,
depending on which one is in use. Only one stage should be in
use at a time. When using LGH or if the LGH input rises above
Cool-Power® ZVS Switching Regulators
Page 36 of 48
nn
The total external loading on VDR must be less than 2mA.
Rev 1.1
02/2017
nn
All loads must be locally decoupled using a 0.1µF ceramic
capacitor. This capacitor must be connected to the VDR output
through a series resistor no smaller than 1kΩ, which forms a
low pass filter.
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9.0
40
4.5
8.0
4
35
7.0
7.0
30
3.5
6.0
3
5.0
2.5
4.0
2
3.0
1.5
2.0
1
1.0
1.00
1.50
2.00
2.50
3.00
0
3.50
20
4.0
15
3.0
2.0
10
1.0
5
0.0
0.00
0.50
1.00
VEAO (V)
IOUT@VIN = 8V
GMOD@VIN = 8V
IOUT@VIN = 12V
IOUT@VIN = 16V
GMOD@VIN = 12V
IOUT@VIN = 8V
GMOD@VIN = 16V
rEQ_OUT@VIN = 8V
5
7.0
6.0
4
5.0
3
4.0
3.0
2
2.0
1
1.0
1.50
2.00
2.50
3.00
Output Current DC Amps
6
8.0
1.00
IOUT@VIN = 18V
IOUT@VIN = 24V
30
6.0
25
5.0
20
4.0
15
3.0
2.0
10
1.0
5
0.50
1.00
IOUT@VIN = 18V
5.0
3
4.0
2
3.0
2.0
1
1.0
GMOD@VIN = 36V
GMOD@VIN = 48V
2.50
3.00
0
3.50
3.00
0
3.50
IOUT@VIN = 24V
IOUT@VIN = 28V
rEQ_OUT@VIN = 24V
rEQ_OUT@VIN = 28V
50
40
8.0
7.0
30
6.0
5.0
20
4.0
10
3.0
2.0
0
1.0
0.0
0.00
0.50
1.00
1.50
2.00
2.50
3.00
-10
3.50
VEAO (V)
IOUT@VIN = 60V
GMOD@VIN = 60V
Figure 63 — GMOD vs Output Current vs. VEAO, VOUT = 10V;
36VIN to 60VIN
Cool-Power® ZVS Switching Regulators
Page 37 of 48
2.50
9.0
VEAO (V)
IOUT@VIN = 48V
2.00
10.0
Output Current DC Amps
4
6.0
IOUT@VIN = 36V
1.50
Figure 65 — rEQ_OUT vs. Output Current vs. VEAO, VOUT = 10V;
18VIN to 28VIN
GMOD (S)
Output Current DC Amps
7.0
2.00
rEQ_OUT@VIN = 16V
35
rEQ_OUT@VIN = 18V
5
8.0
1.50
rEQ_OUT@VIN = 12V
7.0
GMOD@VIN = 28V
6
1.00
IOUT@VIN = 16V
40
IOUT@VIN = 28V
GMOD@VIN = 24V
9.0
0.50
IOUT@VIN = 12V
VEAO (V)
10.0
0.00
0
3.50
8.0
0.0
0.00
0
3.50
Figure 62 — GMOD vs Output Current vs. VEAO, VOUT = 10V;
18VIN to 28VIN
0.0
3.00
9.0
VEAO (V)
GMOD@VIN = 18V
2.50
Figure 64 — rEQ_OUT vs. Output Current vs. VEAO, VOUT = 10V;
8VIN to 16VIN
GMOD (S)
Output Current DC Amps
9.0
0.50
2.00
VEAO (V)
Figure 61 — GMOD vs Output Current vs. VEAO, VOUT = 10V;
8VIN to 16VIN
0.0
0.00
1.50
Ohms
0.50
25
5.0
Rev 1.1
02/2017
IOUT@VIN = 36V
rEQ_OUT@VIN = 36V
IOUT@VIN = 48V
rEQ_OUT@VIN = 48V
IOUT@VIN = 60V
rEQ_OUT@VIN = 60V
Figure 66 — rEQ_OUT vs. Output Current vs. VEAO, VOUT = 10V;
36VIN to 60VIN
vicorpower.com
800 927.9474
Ohms
0.0
0.00
0.5
6.0
Ohms
5
8.0
Output Current DC Amps
9.0
GMOD (S)
Output Current DC Amps
PI3740-00-LGIZ Modulator Gain / Output Resistance TPCB = 25°C
PI3740-00
4.5
8.0
7.0
4
7.0
6.0
3.5
2.5
4.0
2
3.0
1.5
2.0
1
1.0
0.5
0.0
1.00
1.50
2.00
2.50
3.00
0
3.50
40
5.0
30
4.0
3.0
20
2.0
10
1.0
0.0
0.00
0.50
1.00
GMOD@VIN = 8V
IOUT@VIN = 12V
IOUT@VIN = 8V
IOUT@VIN = 16V
GMOD@VIN = 12V
rEQ_OUT@VIN = 8V
GMOD@VIN = 16V
Figure 67 — GMOD vs Output Current vs. VEAO, VOUT = 12V;
8VIN to 16VIN
6.0
4
5.0
3
4.0
3.0
2
2.0
1
1.0
1.50
2.00
2.50
3.00
IOUT@VIN = 24V
50
40
5.0
30
4.0
3.0
20
2.0
10
1.0
0.0
0.00
0.50
1.00
IOUT@VIN = 18V
IOUT@VIN = 28V
GMOD@VIN = 24V
rEQ_OUT@VIN = 18V
GMOD@VIN = 28V
4
6.0
5.0
3
4.0
GMOD (S)
Output Current DC Amps
7.0
2
3.0
2.0
1
1.0
2.00
IOUT@VIN = 36V
2.50
3.00
0
3.50
2.50
3.00
IOUT@VIN = 48V
GMOD@VIN = 48V
0
3.50
IOUT@VIN = 28V
rEQ_OUT@VIN = 28V
50
40
8.0
7.0
30
6.0
5.0
20
4.0
10
3.0
2.0
0
1.0
0.0
0.00
0.50
1.00
1.50
2.00
2.50
3.00
-10
3.50
VEAO (V)
IOUT@VIN = 60V
GMOD@VIN = 60V
Figure 69 — GMOD vs Output Current vs. VEAO, VOUT = 12V;
36VIN to 60VIN
Cool-Power® ZVS Switching Regulators
Page 38 of 48
IOUT@VIN = 24V
rEQ_OUT@VIN = 24V
9.0
VEAO (V)
GMOD@VIN = 36V
2.00
10.0
5
8.0
1.50
1.50
Figure 71 — rEQ_OUT vs. Output Current vs. VEAO, VOUT = 12V;
18VIN to 28VIN
6
9.0
1.00
rEQ_OUT@VIN = 16V
VEAO (V)
10.0
0.50
rEQ_OUT@VIN = 12V
6.0
0
3.50
Figure 68 — GMOD vs Output Current vs. VEAO, VOUT = 12V;
18VIN to 28VIN
0.0
0.00
IOUT@VIN = 16V
7.0
Output Current DC Amps
IOUT@VIN = 18V
IOUT@VIN = 12V
60
VEAO (V)
GMOD@VIN = 18V
0
3.50
8.0
Output Current DC Amps
5
7.0
1.00
3.00
9.0
6
8.0
0.50
2.50
Figure 70 — rEQ_OUT vs. Output Current vs. VEAO, VOUT = 12V;
8VIN to 16VIN
GMOD (S)
Output Current DC Amps
9.0
0.0
0.00
2.00
VEAO (V)
VEAO (V)
IOUT@VIN = 8V
1.50
Ohms
0.50
50
6.0
Rev 1.1
02/2017
IOUT@VIN = 36V
rEQ_OUT@VIN = 36V
IOUT@VIN = 48V
rEQ_OUT@VIN = 48V
IOUT@VIN = 60V
rEQ_OUT@VIN = 60V
Figure 72 — rEQ_OUT vs. Output Current vs. VEAO, VOUT = 12V;
36VIN to 60VIN
vicorpower.com
800 927.9474
Ohms
0.00
60
Ohms
3
5.0
Output Current DC Amps
8.0
GMOD (S)
Output Current DC Amps
PI3740-00-LGIZ Modulator Gain / Output Resistance TPCB = 25°C (Cont.)
PI3740-00
PI3740-00-LGIZ Modulator Gain / Output Resistance TPCB = 25°C (Cont.)
3.5
5.0
3
4.0
2.5
3.0
2
1.5
2.0
1
1.0
0.50
1.00
1.50
2.00
2.50
3.00
0
3.50
120
6.0
100
5.0
80
4.0
60
3.0
40
2.0
20
1.0
0.0
0.00
0.50
1.00
GMOD@VIN = 8V
IOUT@VIN = 12V
IOUT@VIN = 8V
IOUT@VIN = 16V
GMOD@VIN = 12V
rEQ_OUT@VIN = 8V
GMOD@VIN = 16V
5
8.0
7.0
4.5
7.0
4
6.0
3.5
5.0
3
4.0
2.5
3.0
2
1.5
2.0
1
1.0
0.5
0.50
1.00
1.50
2.00
2.50
3.00
Output Current DC Amps
8.0
0.00
IOUT@VIN = 18V
0
3.50
0
3.50
IOUT@VIN = 12V
IOUT@VIN = 16V
rEQ_OUT@VIN = 12V
rEQ_OUT@VIN = 16V
100
6.0
80
5.0
4.0
60
3.0
40
2.0
20
1.0
0.0
0.00
0.50
1.00
1.50
2.00
2.50
3.00
0
3.50
VEAO (V)
IOUT@VIN = 24V
IOUT@VIN = 28V
GMOD@VIN = 24V
IOUT@VIN = 18V
GMOD@VIN = 28V
rEQ_OUT@VIN = 18V
Figure 74 — GMOD vs Output Current vs. VEAO, VOUT = 18V;
18VIN to 28VIN
IOUT@VIN = 24V
IOUT@VIN = 28V
rEQ_OUT@VIN = 24V
rEQ_OUT@VIN = 28V
Figure 77 — rEQ_OUT vs. Output Current vs. VEAO, VOUT = 18V;
18VIN to 28VIN
4.5
8.0
100
7.0
4
7.0
90
6.0
3.5
5.0
2.5
4.0
2
3.0
1.5
2.0
1
1.0
0.5
0.0
0.00
0.50
1.00
1.50
2.00
2.50
3.00
0
3.50
80
6.0
70
5.0
60
4.0
50
3.0
40
30
2.0
20
1.0
10
0.0
0.00
0.50
1.00
VEAO (V)
IOUT@VIN = 36V
GMOD@VIN = 36V
IOUT@VIN = 48V
GMOD@VIN = 48V
2.00
2.50
3.00
0
3.50
VEAO (V)
IOUT@VIN = 60V
GMOD@VIN = 60V
Figure 75 — GMOD vs Output Current vs. VEAO, VOUT = 18V;
36VIN to 60VIN
Cool-Power® ZVS Switching Regulators
Page 39 of 48
1.50
Rev 1.1
02/2017
IOUT@VIN = 36V
rEQ_OUT@VIN = 36V
IOUT@VIN = 48V
rEQ_OUT@VIN = 48V
IOUT@VIN = 60V
rEQ_OUT@VIN = 60V
Figure 78 — rEQ_OUT vs. Output Current vs.VEAO, VOUT = 18V;
36VIN to 60VIN
vicorpower.com
800 927.9474
Ohms
3
Output Current DC Amps
8.0
GMOD (S)
Output Current DC Amps
3.00
120
VEAO (V)
GMOD@VIN = 18V
2.50
Figure 76 — rEQ_OUT vs. Output Current vs. VEAO, VOUT = 18V;
8VIN to 16VIN
GMOD (S)
Output Current DC Amps
Figure 73 — GMOD vs Output Current vs. VEAO, VOUT = 18V
8VIN to 16VIN
0.0
2.00
VEAO (V)
VEAO (V)
IOUT@VIN = 8V
1.50
Ohms
0.0
0.00
0.5
7.0
Ohms
6.0
GMOD (S)
Output Current DC Amps
4
Output Current DC Amps
4.5
7.0
PI3740-00
5.0
3
2.5
4.0
2
3.0
1.5
2.0
1
1.0
0.5
0.50
1.00
1.50
2.00
2.50
3.00
160
5.0
140
4.0
120
100
3.0
80
60
2.0
40
1.0
20
0.0
0.00
0.50
1.00
VEAO (V)
IOUT@VIN = 8V
GMOD@VIN = 8V
IOUT@VIN = 12V
IOUT@VIN = 16V
GMOD@VIN = 12V
IOUT@VIN = 8V
GMOD@VIN = 16V
rEQ_OUT@VIN = 8V
6.0
3.5
6.0
3
5.0
2.5
4.0
2
3.0
1.5
2.0
1
1.0
0.5
1.50
2.00
2.50
3.00
Output Current DC Amps
7.0
GMOD (S)
Output Current DC Amps
4
1.00
IOUT@VIN = 18V
0
3.50
IOUT@VIN = 24V
120
100
3.0
80
60
2.0
40
1.0
20
0.50
1.00
IOUT@VIN = 18V
2.00
2.50
3.00
0
3.50
3.0
2
1.5
2.0
1
1.0
0.5
0.0
2.50
3.00
GMOD@VIN = 48V
0
3.50
rEQ_OUT@VIN = 28V
160
5.0
140
4.0
120
100
3.0
80
2.0
60
40
1.0
20
0.0
0.00
0.50
1.00
1.50
2.00
2.50
3.00
0
3.50
VEAO (V)
IOUT@VIN = 60V
GMOD@VIN = 60V
Figure 81 — GMOD vs Output Current vs. VEAO, VOUT = 24V;
36VIN to 60VIN
Cool-Power® ZVS Switching Regulators
Page 40 of 48
IOUT@VIN = 28V
180
VEAO (V)
IOUT@VIN = 48V
IOUT@VIN = 24V
rEQ_OUT@VIN = 24V
6.0
Output Current DC Amps
2.5
GMOD@VIN = 36V
1.50
Figure 83 — rEQ_OUT vs. Output Current vs. VEAO, VOUT = 24V;
18VIN to 28VIN
3
4.0
IOUT@VIN = 36V
rEQ_OUT@VIN = 16V
140
rEQ_OUT@VIN = 18V
GMOD (S)
Output Current DC Amps
5.0
2.00
rEQ_OUT@VIN = 12V
4.0
GMOD@VIN = 28V
3.5
1.50
IOUT@VIN = 16V
5.0
IOUT@VIN = 28V
GMOD@VIN = 24V
4
1.00
IOUT@VIN = 12V
VEAO (V)
6.0
0.50
0
3.50
160
0.0
0.00
Figure 80 — GMOD vs Output Current vs. VEAO, VOUT = 24V;
18VIN to 28VIN
0.00
3.00
180
VEAO (V)
GMOD@VIN = 18V
2.50
Figure 82 — rEQ_OUT vs. Output Current vs. VEAO, VOUT = 24V;
8VIN to 16VIN
7.0
0.50
2.00
VEAO (V)
Figure 79 — GMOD vs Output Current vs. VEAO, VOUT = 24V;
8VIN to 16VIN
0.0
0.00
1.50
Ohms
0.00
0
3.50
180
Rev 1.1
02/2017
Ohms
0.0
6.0
Ohms
3.5
Output Current DC Amps
6.0
GMOD (S)
Output Current DC Amps
PI3740-00-LGIZ Modulator Gain / Output Resistance TPCB = 25°C (Cont.)
IOUT@VIN = 36V
rEQ_OUT@VIN = 36V
IOUT@VIN = 48V
rEQ_OUT@VIN = 48V
IOUT@VIN = 60V
rEQ_OUT@VIN = 60V
Figure 84 — rEQ_OUT vs. Output Current vs. VEAO, VOUT = 24V;
36VIN to 60VIN
vicorpower.com
800 927.9474
PI3740-00
5.0
3
2.5
4.0
2
3.0
1.5
2.0
1
1.0
0.5
0.00
0.50
1.00
1.50
2.00
2.50
3.00
0
3.50
250
5.0
200
4.0
150
3.0
100
2.0
50
1.0
0.0
0.00
0.50
1.00
VEAO (V)
IOUT@VIN = 12V
IOUT@VIN = 16V
GMOD@VIN = 12V
IOUT@VIN = 8V
GMOD@VIN = 16V
rEQ_OUT@VIN = 8V
6.0
3.5
5.0
3
4.0
2
3.0
1.5
2.0
1
1.0
0.5
1.00
1.50
2.00
2.50
3.00
0
3.50
2.5
2
1.5
2.0
1
1.0
0.5
0.0
2.00
0
2.50
3.00
0.50
1.00
IOUT@VIN = 36V
IOUT@VIN = 48V
GMOD@VIN = 48V
0
3.50
2.50
3.00
3.50
IOUT@VIN = 24V
IOUT@VIN = 28V
rEQ_OUT@VIN = 24V
rEQ_OUT@VIN = 28V
5.0
200
4.0
150
3.0
100
2.0
50
1.0
0.0
0.00
0.50
1.00
1.50
2.00
2.50
3.00
0
3.50
VEAO (V)
IOUT@VIN = 60V
GMOD@VIN = 60V
Figure 87 — GMOD vs Output Current vs. VEAO, VOUT = 28V;
36VIN to 60VIN
Cool-Power® ZVS Switching Regulators
Page 41 of 48
2.00
250
VEAO (V)
GMOD@VIN = 36V
1.50
6.0
GMOD (S)
Output Current DC Amps
3
1.50
50
1.0
rEQ_OUT@VIN = 18V
5.0
1.00
100
2.0
Figure 89 — rEQ_OUT vs. Output Current vs. VEAO, VOUT = 28V;
18VIN to 28VIN
3.5
0.50
150
3.0
VEAO (V)
6.0
0.00
4.0
IOUT@VIN = 18V
Figure 86 — GMOD vs Output Current vs. VEAO, VOUT = 28V;
18VIN to 28VIN
3.0
rEQ_OUT@VIN = 16V
200
GMOD@VIN = 28V
4.0
rEQ_OUT@VIN = 12V
5.0
IOUT@VIN = 28V
GMOD@VIN = 24V
IOUT@VIN = 16V
250
0.00
Output Current DC Amps
GMOD@VIN = 18V
IOUT@VIN = 24V
IOUT@VIN = 12V
0.0
VEAO (V)
IOUT@VIN = 18V
0
3.50
6.0
2.5
0.50
3.00
Figure 88 — rEQ_OUT vs. Output Current vs. VEAO, VOUT = 28V;
8VIN to 16VIN
GMOD (S)
Output Current DC Amps
Figure 85 — GMOD vs Output Current vs. VEAO, VOUT = 28V;
8VIN to 16VIN
0.0
0.00
2.50
Ohms
GMOD@VIN = 8V
2.00
VEAO (V)
Output Current DC Amps
IOUT@VIN = 8V
1.50
Ohms
0.0
6.0
Ohms
3.5
Output Current DC Amps
6.0
GMOD (S)
Output Current DC Amps
PI3740-00-LGIZ Modulator Gain / Output Resistance TPCB = 25°C (Cont.)
Rev 1.1
02/2017
IOUT@VIN = 36V
rEQ_OUT@VIN = 36V
IOUT@VIN = 48V
rEQ_OUT@VIN = 48V
IOUT@VIN = 60V
rEQ_OUT@VIN = 60V
Figure 90 — rEQ_OUTvs. Output Current vs. VEAO, VOUT = 28V;
36VIN to 60VIN
vicorpower.com
800 927.9474
PI3740-00
2.5
3.5
2
3.0
2.5
1.5
2.0
1
1.5
1.0
0.5
0.5
1.00
1.50
2.00
2.50
3.00
450
4.0
400
3.5
350
3.0
300
2.5
250
2.0
200
1.5
150
1.0
100
0.5
50
0.0
0.00
0
3.50
0.50
1.00
VEAO (V)
IOUT@VIN = 8V
GMOD@VIN = 8V
IOUT@VIN = 12V
IOUT@VIN = 16V
GMOD@VIN = 12V
IOUT@VIN = 8V
GMOD@VIN = 16V
rEQ_OUT@VIN = 8V
3.5
2
3.0
2.5
1.5
2.0
1
1.5
1.0
0.5
0.5
1.50
2.00
2.50
3.00
Output Current DC Amps
2.5
4.0
1.00
IOUT@VIN = 18V
IOUT@VIN = 24V
300
250
3.0
200
2.5
2.0
150
1.5
100
1.0
50
0.5
0.50
1.00
IOUT@VIN = 18V
rEQ_OUT@VIN = 18V
2.5
1.5
2.0
1.5
1
1.0
0.5
0.5
2.50
3.00
0
3.50
Output Current DC Amps
2
2.50
3.00
0
3.50
IOUT@VIN = 48V
GMOD@VIN = 48V
IOUT@VIN = 28V
rEQ_OUT@VIN = 28V
350
300
3.5
250
3.0
2.5
200
2.0
150
1.5
100
1.0
50
0.5
0.0
0.00
0.50
1.00
1.50
2.00
2.50
3.00
0
3.50
VEAO (V)
IOUT@VIN = 60V
GMOD@VIN = 60V
Figure 93 — GMOD vs Output Current vs. VEAO, VOUT = 36V;
36VIN to 60VIN
Cool-Power® ZVS Switching Regulators
Page 42 of 48
IOUT@VIN = 24V
rEQ_OUT@VIN = 24V
4.0
VEAO (V)
GMOD@VIN = 36V
2.00
4.5
GMOD (S)
Output Current DC Amps
3.0
IOUT@VIN = 36V
1.50
Figure 95 — rEQ_OUTvs. Output Current vs. VEAO, VOUT = 36V;
18VIN to 28VIN
2.5
3.5
2.00
rEQ_OUT@VIN = 16V
3.5
GMOD@VIN = 28V
3
1.50
rEQ_OUT@VIN = 12V
4.0
IOUT@VIN = 28V
GMOD@VIN = 24V
4.0
1.00
IOUT@VIN = 16V
VEAO (V)
4.5
0.50
IOUT@VIN = 12V
350
0.0
0.00
0
3.50
Figure 92 — GMOD vs Output Current vs. VEAO, VOUT = 36V;
18VIN to 28VIN
0.0
0.00
0
3.50
4.5
VEAO (V)
GMOD@VIN = 18V
3.00
5.0
GMOD (S)
Output Current DC Amps
4.5
0.50
2.50
Figure 94 — rEQ_OUT vs. Output Current vs. VEAO, VOUT = 36V;
8VIN to 16VIN
3
5.0
0.00
2.00
VEAO (V)
Figure 91 — GMOD vs Output Current vs. VEAO, VOUT = 36V;
8VIN to 16VIN
0.0
1.50
Ohms
0.50
4.5
Rev 1.1
02/2017
IOUT@VIN = 36V
rEQ_OUT@VIN = 36V
IOUT@VIN = 48V
rEQ_OUT@VIN = 48V
IOUT@VIN = 60V
rEQ_OUT@VIN = 60V
Figure 96 — rEQ_OUT vs. Output Current vs. VEAO, VOUT = 36V;
36VIN to 60VIN
vicorpower.com
800 927.9474
Ohms
0.0
0.00
GMOD (S)
Output Current DC Amps
4.0
Output Current DC Amps
3
4.5
Ohms
PI3740-00-LGIZ Modulator Gain / Output Resistance TPCB = 25°C (Cont.)
PI3740-00
PI3740-00-LGIZ Modulator Gain / Output Resistance TPCB = 25°C (Cont.)
2.0
1.2
1
1.5
0.8
0.6
1.0
0.4
0.5
0.2
1.50
2.00
2.50
3.00
3.50
GMOD@VIN = 8V
IOUT@VIN = 12V
GMOD@VIN = 12V
2.0
1.2
1
1.5
0.8
0.6
1.0
0.4
0.5
0.2
2.50
3.00
3.50
Output Current DC Amps
1.4
0
IOUT@VIN = 24V
1
0.8
0.6
0.4
0.0
0.00
0.2
0.50
1.00
1.50
2.00
2.50
3.00
3.50
0
VEAO (V)
IOUT@VIN = 36V
GMOD@VIN = 36V
IOUT@VIN = 48V
GMOD@VIN = 48V
IOUT@VIN = 60V
GMOD@VIN = 60V
Figure 99 — GMOD vs Output Current vs. VEAO, VOUT = 50V;
36VIN to 60VIN
Cool-Power® ZVS Switching Regulators
Page 43 of 48
Rev 1.1
02/2017
Output Current DC Amps
1.2
GMOD (S)
Output Current DC Amps
1.4
0.5
0
3.50
IOUT@VIN = 12V
IOUT@VIN = 16V
rEQ_OUT@VIN = 12V
rEQ_OUT@VIN = 16V
500
2.0
400
1.5
300
1.0
200
0.5
100
0.50
1.00
1.50
2.00
2.50
3.00
0
3.50
IOUT@VIN = 24V
IOUT@VIN = 28V
rEQ_OUT@VIN = 24V
rEQ_OUT@VIN = 28V
Figure 101 — rEQ_OUTvs. Output Current vs. VEAO, VOUT = 50V;
18VIN to 28VIN
1.6
1.0
3.00
2.5
rEQ_OUT@VIN = 18V
1.8
1.5
2.50
VEAO (V)
2
2.0
2.00
600
IOUT@VIN = 18V
Figure 98 — GMOD vs Output Current vs. VEAO, VOUT = 50V;
18VIN to 28VIN
2.5
1.50
3.0
GMOD@VIN = 28V
3.0
1.00
700
IOUT@VIN = 28V
GMOD@VIN = 24V
0.50
3.5
0.0
0.00
VEAO (V)
GMOD@VIN = 18V
100
Figure 100 — rEQ_OUT vs. Output Current vs. VEAO, VOUT = 50V;
8VIN to 16VIN
GMOD (S)
Output Current DC Amps
2.5
IOUT@VIN = 18V
200
0.5
rEQ_OUT@VIN = 8V
1.6
2.00
300
1.0
VEAO (V)
1.8
3.0
1.50
400
IOUT@VIN = 8V
2
1.00
500
1.5
GMOD@VIN = 16V
3.5
0.50
600
2.0
IOUT@VIN = 16V
Figure 97 — GMOD vs Output Current vs. VEAO, VOUT = 50V;
8VIN to 16VIN
0.0
0.00
700
0.0
0.00
VEAO (V)
IOUT@VIN = 8V
800
2.5
Ohms
1.00
900
3.0
3.0
700
2.5
600
500
2.0
400
1.5
300
1.0
Ohms
0.50
0
1000
Ohms
1.4
Output Current DC Amps
1.6
2.5
GMOD (S)
Output Current DC Amps
1.8
3.0
0.0
0.00
3.5
2
3.5
200
0.5
100
0.0
0.00
0.50
1.00
1.50
2.00
2.50
3.00
0
3.50
VEAO (V)
IOUT@VIN = 36V
rEQ_OUT@VIN = 36V
IOUT@VIN = 48V
rEQ_OUT@VIN = 48V
IOUT@VIN = 60V
rEQ_OUT@VIN = 60V
Figure 102 — rEQ_OUT vs. Output Current vs. VEAO, VOUT = 50V;
36VIN to 60VIN
vicorpower.com
800 927.9474
PI3740-00
System Design Considerations
Inductive Loads: As with all power electronic applications,
consideration must be given to driving inductive loads that
may be exposed to a fault in the system which could result in
consequences beyond the scope of the power supply primary
protection mechanisms. An inductive load could be a filter, fan
motor or even excessively long cables. Consider an instantaneous
short circuit through an un-damped inductance that occurs when
the output capacitors are already at an initial condition of fully
charged. The only thing that limits the current is the inductance
of the short circuit and any series resistance. Even if the power
supply is off at the time of the short circuit, the current could
ramp up in the external inductor and store considerable energy.
The release of this energy will result in considerable ringing,
with the possibility of ringing nodes connected to the output
voltage below ground. The system designer should plan for this
by considering the use of other external circuit protection such
as load switches, fuses, and transient voltage protectors. The
inductive filters should be critically damped to avoid excessive
ringing or damaging voltages. Adding a high current Schottky
diode from the output voltage to PGND close to the PI3740-00 is
recommended for these applications.
Low Voltage Operation: There is no isolation from an SELV
(Safety-Extra-Low-Voltage) power system. Powering low voltage
loads from input voltages as high as 60V may require additional
consideration to protect low voltage circuits from excessive
voltage in the event of a short circuit from input to output. A fast
TVS (transient voltage suppressor) gating an external load switch
is an example of such protection.
Cool-Power® ZVS Switching Regulators
Page 44 of 48
Rev 1.1
02/2017
vicorpower.com
800 927.9474
PI3740-00
Package Drawings
DETAIL A
(SECTION VIEW)
E
PIN 1 INDEX
ddd M C A B
eee M C
D
b
SEE NOTE 2
L
PAD OPENING (b)
b
SEE NOTE 2
aaa C
(4)PL
TOP VIEW
ddd M C A B
eee M C
DETAIL B
BB 10x14mm SiP
DIMENSIONAL REFERENCES
REF.
MIN.
NOM.
MAX.
2.49
2.56
2.63
A
A1
--0.04
A2
--2.59
b
0.50
0.55
0.60
D
14.00 BSC
E
10.00 BSC
D1
13.00 BSC
E1
9.00 BSC
e
1.00 BSC
L
.175
0.225
.275
DETAIL A
e SEE NOTE 1
E1
e SEE NOTE 1
14
13
12
BB 10x14mm SiP
DIMENSIONAL REFERENCES
TOLERANCE OF FORM AND
REF.
POSITION
11
10
aaa
bbb
ccc
ddd
eee
9
8
D1
7
0.10
0.10
0.08
0.10
0.08
6
5
4
NOTES:
1. 'e' REPRESENTS THE BASIC TERMINAL PITCH.
SPECIFIES THE TRUE GEOMETRIC POSITION OF THE TERMINAL AXIS.
3
2.
DIMENSION 'b' APPLIES TO METALLIZED TERMINAL AND IS MEASURED
BETWEEN 0.00mm AND 0.25mm FROM TERMINAL TIP.
3.
DIMENSION 'A' INCLUDES PACKAGE WARPAGE
4.
EXPOSED METALLIZED PADS ARE Cu PADS WITH SURFACE FINISH
PROTECTION.
2
1
PIN 1 INDEX
A
B
C
D
E
F
G
H
J
K
DETAIL B
BOTTOM VIEW
5.
RoHS COMPLIANT PER CST-0001 LATEST REVISION.
6.
ALL DIMENSIONS ARE IN MM UNLESS OTHERWISE SPECIFIED.
bbb C
A2
A
SEE NOTE 3
ccc C
SEATING PLANE
A1
b
C
Cool-Power® ZVS Switching Regulators
Page 45 of 48
Rev 1.1
02/2017
vicorpower.com
800 927.9474
PI3740-00
Receiving PCB Pattern Design Recommendations
E1
PIN 1
e
e
D1
b
PCB LAND PATTERN
BB 10x14mm SiP
DIMENSIONAL REFERENCES
REF.
MIN.
NOM.
MAX.
b
0.50
0.55
0.60
D1
13.00 BSC
E1
9.00 BSC
e
1.00 BSC
Cool-Power® ZVS Switching Regulators
Page 46 of 48
Rev 1.1
02/2017
vicorpower.com
800 927.9474
b
PI3740-00
Revision History
Revision
Date
Description
1.0
02/10/17
Initial Release
1.1
02/27/17
Current Sense Amplifier clarifications
Cool-Power® ZVS Switching Regulators
Page 47 of 48
Page Number(s)
n/a
Rev 1.1
02/2017
8
vicorpower.com
800 927.9474
PI3740-00
Vicor’s comprehensive line of power solutions includes high density AC-DC and DC-DC modules and
accessory components, fully configurable AC-DC and DC-DC power supplies, and complete custom
power systems.
Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is assumed by Vicor for its use. Vicor makes no
representations or warranties with respect to the accuracy or completeness of the contents of this publication. Vicor reserves the right to make
changes to any products, specifications, and product descriptions at any time without notice. Information published by Vicor has been checked and
is believed to be accurate at the time it was printed; however, Vicor assumes no responsibility for inaccuracies. Testing and other quality controls
are used to the extent Vicor deems necessary to support Vicor’s product warranty. Except where mandated by government requirements, testing of
all parameters of each product is not necessarily performed.
Specifications are subject to change without notice.
Vicor’s Standard Terms and Conditions
All sales are subject to Vicor’s Standard Terms and Conditions of Sale, which are available on Vicor’s webpage or upon request.
Product Warranty
In Vicor’s standard terms and conditions of sale, Vicor warrants that its products are free from non-conformity to its Standard Specifications (the
“Express Limited Warranty”). This warranty is extended only to the original Buyer for the period expiring two (2) years after the date of shipment
and is not transferable.
UNLESS OTHERWISE EXPRESSLY STATED IN A WRITTEN SALES AGREEMENT SIGNED BY A DULY AUTHORIZED VICOR SIGNATORY, VICOR
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and components. Prior to using or distributing any products that include Vicor components, buyers should provide adequate design, testing and
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Vicor will repair or replace defective products in accordance with its own best judgment. For service under this warranty, the buyer must contact
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VICOR’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS
PRIOR WRITTEN APPROVAL OF THE CHIEF EXECUTIVE OFFICER AND GENERAL COUNSEL OF VICOR CORPORATION. As used herein, life support
devices or systems are devices which (a) are intended for surgical implant into the body, or (b) support or sustain life and whose failure to perform
when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to the
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Vicor and its subsidiaries own Intellectual Property (including issued U.S. and Foreign Patents and pending patent applications) relating to the
products described in this data sheet. No license, whether express, implied, or arising by estoppel or otherwise, to any intellectual property rights is
granted by this document. Interested parties should contact Vicor’s Intellectual Property Department.
The products described on this data sheet are protected by the following U.S. Patents Numbers:
RE40,072; 6,788,033; 7,154,250; 6,421,262; 8,669,744; and for use under: 6,984,965; 6,975,098.
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25 Frontage Road
Andover, MA 01810 USA
Tel: 800-735-6200
Fax: 978-475-6715
email
Customer Service: custserv@vicorpower.com
Technical Support: apps@vicorpower.com
Cool-Power® ZVS Switching Regulators
Page 48 of 48
Rev 1.1
02/2017
vicorpower.com
800 927.9474
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Authorized Distributor
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