Datasheet
AC/DC Converter IC
PWM Type DC/DC Converter IC
Integrated Switching MOSFET
BM2P061EK-LB BM2P101EK-LB
Key Specification
General Description
This is the product guarantees long time support in
Industrial market. It is suitable when it is used for in
long time support.
This series IC is a PWM type DC/DC converter for
AC/DC which provides an optimum system for various
electrical products that require an electrical outlet. It
supports both Isolated and non-isolated devices,
enabling simpler design of various types of low power
consumption electrical converters.
This series also has a built-in HV starter circuit that can
withstand up to 800V, which contributes to low power
consumption. Since current mode control is utilized,
current is restricted in each cycle and excellent
performance is demonstrated in bandwidth and
transient response. Switching frequency is fixed at
65kHz or 100kHz. At light load, the switching frequency
is reduced and high efficiency is achieved. A frequency
hopping function is also built-in, which contributes to
low EMI. In addition, this product has a built-in super
junction MOSFET which has a withstand voltage of
800V.
Power Supply Voltage Operation Range:
VCC :
10.90V to 30.0V
DRAIN :
800V(Max)
Normal Operating Current:
1.00mA (Typ)
Burst Operating Current:
0.30mA (Typ)
PWM Frequency(1a, 1b):
65kHz,100kHz (Typ)
Operating Temperature Range:
- 40°C to +105°C
MOSFET ON Resistance:
1.6Ω (Typ)
Package
W(Typ) x D(Typ) x H(Max)
DIP7AK: 9.27mm×6.35mm×5.33mm
pitch 2.54mm
Feature
Long Time Support Products for Industrial
Applications.
PWM Frequency: 65kHz/100kHz
PWM Current Mode Control
Frequency Hopping Function
Burst Operation at Light Load
Frequency Reduction Function
Built-in 800V Starter Circuit
Built-in 800V Switching MOSFET
VCC Pin Under Voltage Protection
VCC Pin Over Voltage Protection
Over Current Limiter Function Per Cycle
Over Current Limiter AC Voltage Correction
Function
Soft Start Function
Brown IN/OUT Function
ZT Pin OVP Function
Application
Industrial Equipment, Household Electrical Appliances,
Adapters, etc.
Typical Application Circuit
FUSE
OUT
Filter
Diode
Bridge
DRAIN
SOURCE
BR
VCC
GND
○Product structure : Silicon monolithic integrated circuit
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TSZ22111 • 14 • 001
ZT
FB
GND
○This product has no designed protection against radioactive rays
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Pin Configuration
TOP VIEW
6
5
FB
7
GND
4
ZT
BR
3
VCC
SOURCE
2
DRAIN
1
Pin Description
Pin No.
Pin Name
I/O
Function
1
2
3
4
5
6
7
SOURCE
BR
GND
FB
ZT
VCC
DRAIN
I/O
I
I/O
I
I
I
I/O
MOSFET SOURCE pin
AC voltage detect pin
GND pin
Feedback signal input pin
Auxiliary winding input pin
Power supply input pin
MOSFET DRAIN pin
ESD Diode
VCC
GND
✔
✔
✔
✔
✔
✔
✔
Block Diagram
Filter
Diode
Bridge
BR
VCC
2
BR Comp
+
-
VCC UVLO
+
-
100µs
Filter
128ms
Filter
ZT
DRAIN
6
100µs
Filter
+
VCC OVP
5
7
Starter
Internal
Regulator
Gate
Clamper
Internal Block
ZT
OVP
100µs Filter
+
3 count Timer
-
+
ZT
Comp.
-
NOUT
Thermal
Protection
Short
Protection
ZT
Blanking
Time
NOUT
OLP
+
-
Super
Junction
MOSFET
PWM
Control
64ms
/512ms
Timer
S
R Q
Burst
Comparator
+
PWM
Comparator
+
Logic
&
Timer
DRIVER
NOUT
Dynamic Current
+ Limitter
Reference
Voltage
Internal
Regulator
4.0V
OCP
Compensation
+
-
FB
Ref
Timer
4
LEB
Time
1
SOURCE
OCP
+
Reference
Voltage
1/4
MAX
DUTY
Soft Start
OSC
Frequency
Hopping
3
GND
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Description of Blocks
1.
Starter Circuit (DRAIN: 7pin)
This IC enables low standby electric power and high-speed startup because it has a built-in start circuit (800V tolerance).
The current consumption after startup is only OFF current ISTART3 (Typ=10µA).
VH
Start Up Current[A]
DRAIN
ISTART2
Starter
VCC
Cvcc
+
VCCUVLO
ISTART1
ISTART3
Figure 1. Start circuit block diagram
2.
VCC[V]
VUVLO1
Vsc
Figure 2. Start up current vs. VCC voltage
Start Sequence (start-up operation, light load operation, over load protection function)
Start sequence is shown in Figure 3. See the sections below for detailed descriptions.
VH
(Input Voltage)
VBR1
BR
VUVLO1
Under
tFOLP1
VCC
tFOLP2
tFOLP1
VFOLP1
FB
Output
Voltage
Over
Load
Normal
Load
Light
Load
Output
Current
Burst mode
Switching
Soft
Start
A
BC
D
E
F
G
H
I
Figure 3. Start sequences timing chart
A: Input voltage VH is applied to the IC. As VH voltage is applied, the BR pin voltage becomes higher than
VBR1(Typ=0.7V).
B: When the VCC pin voltage exceeds VUVLO1 (Typ=15.5V), the IC starts to operate. When the IC judges the other
protection functions as normal condition, switching operation starts. Until the secondary output voltage becomes
constant from start-up, the VCC pin voltage drops by the VCC pin consumption current. When the VCC pin voltage
becomes less than VCHG1 (Typ=10.7V), VCC charge operation starts.
C: Switching operation starts with the soft start function, over current limit value is restricted to prevent any excessive
rise in voltage or current. Output voltage will be set to rated voltage within the tFOLP1(Typ=64ms).
D: Once the output voltage is stable, VCC voltage also is stable.
E: When the FB pin voltage becomes lower than VBST1 (Typ=0.40V) at light load, the IC starts burst operation to reduce
the power consumption.
F: When FB pin voltage becomes higher than VFOLP1 (Typ=3.4V), overload protection function operates.
G When FB pin voltage stays at VFOLP1 (Typ=3.4V) for tFOLP1 (Typ=64ms) or more, switching stops. When FB pin
voltage becomes less than VFOLP2 (Typ=3.2V), the IC’s FB OLP timer is reset.
H: Continued for tFOLP2 (Typ=512ms), IC starts switching again.
I: Same as D.
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Description of Blocks – continued
3. VCC Pin Protection Function
This IC has the internal protection functions at the VCC pin.
1) Under voltage protection function UVLO (Under Voltage Lockout)
2) Over voltage protection function VCC OVP (Over Voltage Protection)
3) VCC charge function
VCC charge function charges VCC pin from the high voltage line through a built-in starter circuit.
(1)
VCC UVLO / VCC OVP Function
VCC UVLO function and VCC OVP function are auto recovery type comparators with voltage hysteresis. Switching is
stopped by the VCC OVP function when VCC pin voltage > VOVP1 (Typ=32.0V), and restarts when VCC pin voltage <
VOVP2 (Typ=24.0V)
VH
(Input Voltage)
VOVP1
VOVP2
VUVLO1
VCHG2
VCC
VCHG1
VUVLO2
Time
ON
ON
OFF
VCC UVLO
ON
VCC OVP
OFF
OFF
ON
ON
ON
VCC Charge
Function
OFF
OFF
ON
ON
OFF
OFF
Switching
OFF
A
B C
D
E F
G
H
I
J
A
Time
Figure 4. VCC UVLO / VCC OVP / VCC Charge Function timing chart
A: VCC pin voltage rises.
B: When VCC pin voltage is more than VUVLO1(Typ=15.5V), the VCC UVLO function is released and DC/DC
operation starts.
C: When VCC pin voltage is less than VCHG1(Typ=10.7V), VCC charge function operates and VCC voltage
rises.
D: When VCC pin voltage is more than VCHG2(Typ=15.0V), VCC charge function stops.
E: When VCC pin voltage is more than VOVP1(Typ=32.0V) switching continues for tCOMP1 (Typ=100μs), After that,
switching is stopped by the VCCOVP function.
F: When VCC pin voltage becomes less than VOVP2(Typ=24.0V), switching operation restarts.
G: VCC voltage drops.
H: The same as C.
I: The same as D.
J: When input voltage “VH” drops and VCC pin voltage becomes less than VUVLO2(Typ=10.2V), switching
operation is stopped by the VCC UVLO function.
(2)
VCC Charge Function
The IC starts to operate when the VCC pin voltage becomes more than VUVLO1(Typ=15.5V). After that, VCC charge
function operates when the VCC pin voltage becomes less than VCHG1(Typ=10.7V). During this time, the VCC pin is
charged from the DRAIN pin through starter circuit. By this operation, failure at start up is prevented. Once the VCC
charge function resumes, it continues charge operation until VCC voltage > VCHG2(Typ=15.0V), after which the charge
function stops.
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Description of Blocks – continued
DC/DC Driver(PWM Comparator, Frequency Hopping, Slope Compensate, OSC, Burst)
This IC uses current mode PWM control. The internal oscillator sets the switching frequency at a fixed value when FB
voltage > VDLT1(Typ=1.25V).It also has a built-in switching frequency hopping function. Max duty cycle is fixed at 75%
(Typ) and Minimum pulse width is fixed at 500 ns (Typ).With current mode control, when the duty cycle exceeds 50%,
sub harmonic oscillation may occur. As a countermeasure, IC has built-in slope compensation function. IC it also has a
built-in burst mode circuit and frequency reduction circuit to achieve lower power consumption in light load. FB pin is
pulled up by RFB (Typ=30kΩ) to an internal regulator. The FB pin voltage varies with secondary output voltage
(secondary power).Burst mode operation and frequency reduction operate by monitoring FB pin voltage.
4.
(1)
Frequency Reduction Circuit
Figure 5 shows the relationships of switching frequency to FB voltage, and DC/DC operation modes.
mode1: Burst voltage has hysteresis. Switching stops when FB voltage < VBST1(Typ=0.4V), and resumes when FB
voltage > VBST2(Typ=0.45V).
mode2: When FB voltageVZTOVP(Typ=3.5V) 1pulse OVP detection
ZT pin voltage>VZTOVP(Typ=3.5V) 2pulses OVP detection
ZT pin voltage>VZTOVP(Typ=3.5V) 3pulses OVP detection. Then internal timer starts to operate.
The status of D continues for TZTOVP(Typ=100µs) from D, IC stops by latch.
DC detection) When ZT voltage >VZTOVP(Typ=3.5V) status continues for tZTOVP (Typ=100µs), IC detects ZT OVP.
Less than
tZTOVP
tZTOVP
VZTOVP
PULSE
PULSE
ZT
ON
Switching
A
B
C
D
Figure 11. ZT pin over voltage protect (DC detection)
A:
B:
C:
D:
ZT pin voltage > VZTOVP(Typ=3.5V)
ZT pin voltage > VZTOVP (Typ=3.5V) status is less than tZTOVP(Typ=100µs)period, DC/DC returns to normal
operations.
ZT pin voltage > VZTOVP(Typ=3.5V)
ZT pin voltage > VZTOVP(Typ=3.5V) status continues for tZTOVP(Typ=100µs), latching occurs and DC/DC is turned
OFF.
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Description of Blocks – continued
10. ZT Trigger Mask Function
When switching is set ON / OFF, the superposition of noise may occur at ZT pin. During this time, the ZTOVP
comparator is masked for the duration of tZTMASK (Typ=0.60µs) to prevent false detection of the ZT comparator.
ON
OFF
DC/DC
DRAIN
ZT
ZT mask
Function
tZTMASK
A
tZTMASK
B C
D
E
F
G
Figure 12. ZT Trigger Mask Function
A:
B:
C:
D:
E:
F:
G:
DC/DC OFF → ON
DC/DC ON → OFF
Noise occurs at the ZT pin, and ZT comparator is masked for tZTMASK (Typ=0.60µs).
Same as A.
Same as B
Same as C
Same as A
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Absolute Maximum Ratings (Ta=25°C)
Parameter
Maximum Applied Voltage 1
Maximum Applied Voltage 2
Maximum Applied Voltage 3
DRAIN Current (DC)
DRAIN Current(Pulse)
Power Dissipation
Maximum Junction Temperature
Storage Temperature Range
Symbol
VMAX1
VMAX2
VMAX3
IDD1
IDD2
Pd
Tjmax
Tstg
Rating
-0.3 to +800
-0.3 to +35.0
-0.3 to +6.5
5.0
20.0
1.00
+150
-55 to +150
Unit
V
V
V
A
A
W
°C
°C
Conditions
DRAIN
VCC
BR, FB, SOURCE, ZT
PW=10μs, Duty cycle=1%
Caution 1:
Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is
operated over the absolute maximum ratings.
Caution 2: Should by any chance the maximum junction temperature rating be exceeded the rise in temperature of the chip may result in deterioration of the
properties of the chip. In case of exceeding this absolute maximum rating, design a PCB boards with power dissipation taken into consideration by
increasing board size and copper area so as not to exceed the maximum junction temperature rating.
(Note 1) Reduce by 8mW/°C when operating Ta = 25°C or more when mounted on 70 mm × 70 mm, 1.6 mm thick, glass epoxy on single-layer substrate.
Thermal Loss
The thermal design should set operation for the following conditions.
1. The ambient temperature Ta must be 105 °C or less.
2. The IC’s loss must be within the power dissipation Pd.
The thermal reduction characteristics are as follows.
(PCB: 70mm×70mm×1.6mm mounted on glass epoxy substrate)
1.4
1.2
1.0
Pd[W]
0.8
0.6
0.4
0.2
0.0
0
25
50
75
100
125
150
Ta[℃]
Figure 13. Thermal Reduction Characteristics
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TSZ22111 • 15 • 001
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BM2P061EK-LB BM2P101EK-LB
Recommended Operating Condition
Parameter
Power Supply Voltage Range 1
Power Supply Voltage Range 2
Operating Temperature
Symbol
VDRAIN
VCC
Topr
Min
10.90
-40
Typ
15.0
+25
Max
800
30.0
+105
Unit
V
V
°C
Conditions
DRAIN
VCC (Note 2)
Surrounding Temperature
(Note 2) VCC recharge function operates in the VCC voltage range of less than 10.7V (Refer to P-7 [3-2] VCC charge function)
Recommended External Component Condition
Parameter
BR Pin Capacitor
Symbol
CBR
Recommended
0.01μF or more
Unit
μF
Conditions
Electrical Characteristics in MOSFET Part (Unless otherwise noted, Ta=25°C VCC=15V)
Parameter
DRAIN to SOURCE Voltage
DRAIN Leak Current
ON Resistance
Symbol
VDDS
IDSS
RDS(ON)
Specifications
Min
800
-
Typ
0
1.60
Max
100
2.15
Unit
V
μA
Ω
Conditions
ID=1mA , VGS=0V
VDS=800V , VGS=0V
ID=0.25A , VGS=10V
Electrical Characteristics in Starter Circuit Part (Unless otherwise noted, Ta=25°C VCC=15V)
Parameter
Start Current 1
Start Current 2
OFF Current
Start Current Switching Voltage
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TSZ22111 • 15 • 001
Symbol
ISTART1
ISTART2
ISTART3
VSC
Specifications
Min
0.100
3.00
0.400
Typ
0.300
5.50
10
0.800
11/19
Max
0.600
8.50
20
1.200
Unit
mA
mA
μA
V
Conditions
VCC= 0V
VCC=10V
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BM2P061EK-LB BM2P101EK-LB
Electrical Characteristics in Control IC Part (Unless otherwise noted, Ta=25°C VCC=15V)
Parameter
Symbol
Specifications
Min
Typ
Max
Unit
Conditions
[Circuit Current]
Circuit Current (ON)1
ION1
-
1000
1800
μA
Pulse Operation(VFB=2.0V)
Drain = OPEN
Circuit Current (ON)2
ION2
150
300
450
μA
Burst Operation (VFB =0.3V)
VUVLO1
VUVLO2
VUVLO3
VOVP1
VOVP2
VOVP3
tCOMP1
VLATCH
VCHG1
VCHG2
14.50
9.50
30.0
50
9.70
14.00
15.50
10.20
5.30
32.0
24.0
8.0
100
V
V
V
V
V
V
μs
V
V
V
VCC rise
VCC fall
VUVLO3 = VUVLO1 - VUVLO2
VCC rise
VCC fall
VUVLO2-0.5
10.70
15.00
16.50
10.90
34.0
150
11.70
16.00
TSD1
150
175
200
C
Control block’s Tj rise
TSD2
-
100
-
C
Control block’s Tj fall
TSD3
-
75
-
C
tCOMP2
50
100
150
μs
fSW1a
fSW2a
fDEL1a
fSW1b
fSW2b
fDEL1b
tMIN
tSS1
tSS2
tSS3
DMAX
RFB
Gain
VBST1
VBST2
61.5
20
95.0
20
1.20
2.40
4.80
68.0
23
0.300
0.350
65.0
25
4.0
100.0
27
6.0
500
2.00
4.00
8.00
75.0
30
4.00
0.400
0.450
68.5
30
105.0
34
2.80
5.60
11.20
82.0
37
0.500
0.550
kHz
kHz
kHz
kHz
kHz
kHz
ns
ms
ms
ms
%
kΩ
V/V
V
V
VDLT1
1.10
1.25
1.40
V
VDLT2
0.50
0.65
0.80
V
VFOLP1
VFOLP2
tFOLP1
tFOLP2
VCSa
VCSb
3.20
3.00
40
358
0.380
0.280
3.40
3.20
64
512
0.400
0.300
3.60
3.40
88
666
0.420
0.320
V
V
ms
ms
V
V
VDCS
0.950
1.050
1.150
V
tDCS
64
128
196
μs
tLEB
-
250
-
ns
VCSSHT
0.030
0.060
0.090
V
tCSSHT
1.0
2.0
3.0
μs
[VCC Pin Protection Function]
VCC UVLO Voltage1
VCC UVLO Voltage2
VCC UVLO Hysteresis
VCC OVP Voltage1
VCC OVP Voltage2
VCC OVP Hysteresis
VCC OVP Timer
Latch Release VCC Voltage
VCC charge Start Voltage
VCC charge Stop Voltage
Over Temperature Protection 1
(Note 3)
Over Temperature Protection 2
(Note 3)
Over Temperature Protection
Hysteresis
Over Temperature Protection
Timer
[PWM Type DC/DC Driver Block]
PWM Frequency1a
PWM Frequency2a
Frequency Hopping width1a
PWM Frequency1b
PWM Frequency2b
Frequency Hopping Width1b
Minimum Pulse Width
Soft Start Time1
Soft Start Time 2
Soft Start Time3
Maximum Duty
FB Pin Pull-up Resistor
FB / CS Gain
FB Burst Voltage1
FB Burst Voltage2
Frequency Reduction Start
FB Voltage
Frequency Reduction Stop
FB Voltage
FB OLPvoltage1
FB OLPvoltage2
FB OLP ON Timer
FB OLP OFF Timer
Over Current Detection Voltage a
Over Current Detection Voltage b
Dynamic Over Current Detection
Voltage
Dynamic Over Current Detection
timer
Leading Edge Blanking Time
SOURCE Pin Short Protection
Voltage
SOURCE Pin Short Protection
Time
VFB=2.0V(BM2P061EK-LB)
VFB=0.5V(BM2P061EK-LB)
VFB=2.0V(BM2P061EK-LB)
VFB=2.0V(BM2P101EK-LB)
VFB=0.5V(BM2P101EK-LB)
VFB=2.0V(BM2P101EK-LB)
(Note 4)
VFB fall
VFB rise
OLP detect VFB rise
OLP release VFB fall
BM2P061EK-LB
BM2P101EK-LB
(Note 4)
(Note 3) Over temperature protection operates over Maximum Junction Temperature. Since, IC cannot guarantee for the operation over Maximum Junction
Temperature, always operate at Maximum Junction Temperature or less.
(Note 4) Not 100% tested.
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Electrical Characteristics in Control IC Part (Unless otherwise noted, Ta=25°C VCC=15V)
Parameter
Symbol
[ BR pin function ]
BR Pin UVLO Detection Voltage1
BR Pin UVLO Detection Voltage 2
BR Pin UVLO Hysteresis Voltage
BR Pin UVLO Detection Delay
Time1
BR Pin UVLO Detection Delay
Time2
[ ZT pin function ]
ZT OVP Voltage
ZT OVP Timer
ZT Trigger Mask Time
Specifications
Unit
Conditions
Min
Typ
Max
VBR1
VBR2
VBR3
0.64
0.32
-
0.70
0.38
0.32
0.76
0.44
-
V
V
V
VBR rise
VBR fall
VBR3 = VBR1 - VBR2
tBR1
50
100
150
μs
VBR rise
tBR2
64
128
196
ms
VBR fall
VZTOVP
tZTOVP
tZTMASK
3.250
50
-
3.500
100
0.60
3.750
150
-
V
μs
µs
(Note 4)
(Note 4) Not 100% tested.
Protection Circuit Operation Modes
The operation modes of the various protection functions of the IC are shown in Table 1.
Table 1 Protection Circuit Operation Modes
Function
VCC
UVLO
VCC
OVP
TSD
FB
OLP
SOURCE
Short
Protection
BR
UVLO
ZT
OVP
Detection
VCCVOVP1
(VCC rise)
Tj>TSD1
(Tj rise)
VFB>VFOLP1
(VFB rise)
SOURCE
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