MPM3690-20A/B
16V, Dual 13A or Single 26A
DC/DC Power Module
DESCRIPTION
FEATURES
The MPM3690-20 is a dual 13A output or single
26A output power module that offers a complete
power solution with excellent load and line
regulation. The MPM3690-20 supports an input
range between 4V and 16V and an output range
between 0.6V and 3.3V. The voltage of the
MPM3690-20’s two outputs can be set
separately via a single resistor at each output.
The MPM3690-20 offers two configurations. The
MPM3690-20A is dual 13A output, while the
MPM3690-20B is single 26A output. The
MPM3690-20 is also pin-compatible with the
MPM3690-30A/B (dual 18A or single 36A output)
and MPM3690-50A/B (dual 25A or single 50A
output) power modules. See the Ordering
Information section on page 2 for more details.
The MPM3690-20 adopts MPS’s proprietary,
multi-phase constant-on-time (MCOT) control,
which provides ultra-fast transient response and
minimizes the output capacitance.
Pin-Compatible Dual 13A or Single 26A
Output Power Modules:
o MPM3690-20A: Dual 13A Output
o MPM3690-20B: Single 26A Output
4V to 16V Input Voltage Range
o 3.2V to 16V Input Voltage Range with
External 3.3V VCC Bias
0.6V to 3.3V Output Voltage Range
Ultra-Fast Transient Enabled by COT
Control
Adjustable Switching Frequency
Adjustable Soft-Start Time
Over-Current and Over-Voltage Protection
Differential Remote Sense for Both Output
Channels
Pin-Compatible with the MPM3690-30 and
MPM3695-50
Available in a BGA (16mmx16mmx5.18mm)
Package
APPLICATIONS
The MPM3690-20 integrates a monolithic
DC/DC converter, power inductor, and other
passive components. It is available in a BGA
(16mmx16mmx5.18mm) package.
Telecom and Networking Equipment
Industrial Equipment
FPGA and ASIC Power Systems
All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive.
For MPS green status, please visit the MPS website under Quality Assurance.
“MPS”, the MPS logo, and “Simple, Easy Solutions” are trademarks of
Monolithic Power Systems, Inc. or its subsidiaries.
TYPICAL APPLICATION
10kΩ
4V to 16V
Input
MODE
VCC
CIN
VOUT = 1.2V/26A
VS1P
FB1
EN1
EN2
EN
PG
RFB
COUT
VS2P
FB2
RF
VS2N
VIN = 12V, with external 3.3V VCC
95
VS1N
VOUT2
RF
100
60.4kΩ
MPM3690-20B
CSS1
Efficiency vs. Load Current
VOUT1
COUT
EFFICIENCY (%)
VIN
90
85
VOUT=1.8V,Fsw=600kHz
80
VOUT=1.5V,Fsw=600kHz
75
VOUT=1.2V,Fsw=600kHz
VOUT=1V,Fsw=600kHz
70
VOUT=0.8V,Fsw=600kHz
65
Figure 1: Interleaved Operation at 1.2V/26A
0
5
10
15
20
LOAD CURRENT (A)
MPM3690-20 Rev. 1.0
MonolithicPower.com
5/12/2021
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© 2021 MPS. All Rights Reserved.
25
1
MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
ORDERING INFORMATION
Part Number*
MPM3690GBF-20A
MPM3690GBF-20B
Configuration
Dual 13A Output
Single 26A Output
Package
BGA
(16mmx16mmx5.18mm)
Top Marking
MSL_Rating
See Below
3
* For Tray, add suffix –T (e.g. MPM3690GBF-20A–T).
TOP MARKING (MPM3690GBF-20A)
MPS: MPS prefix
YY: Year code
WW: Week code
M3690-20A: part number
LLLLLLLLL: Lot number
M: Module
TOP MARKING (MPM3690GBF-20B)
MPS: MPS prefix
YY: Year code
WW: Week code
M3690-20B: Part number
LLLLLLLLL: Lot number
M: Module
MPM3690-20 Rev. 1.0
MonolithicPower.com
5/12/2021
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© 2021 MPS. All Rights Reserved.
2
MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
PIN-COMPATIBLE PARTS
Part Number
Output
MPM3690GBF-20A
Dual 13A
MPM3690GBF-20B
Single 26A
MPM3690GBF-30A
Dual 18A
MPM3690GBF-30B
Single 36A
MPM3690GBF-50A
Dual 25A
MPM3690GBF-50B
Single 50A
Description
4V to 16V Input, 0.6V to 3.3V Output, BGA (16mmx16mmx5.18mm)
Package
4V to 16V Input, 0.6V to 3.3V Output, BGA (16mmx16mmx5.18mm)
Package
4V to 16V Input, 0.6V to 3.3V Output, BGA (16mmx16mmx5.18mm)
Package
4V to 16V Input, 0.6V to 3.3V Output, BGA (16mmx16mmx5.18mm)
Package
4V to 16V Input, 0.6V to 1.8V Output, BGA (16mmx16mmx5.18mm)
Package
4V to 16V Input, 0.6V to 1.8V Output, BGA (16mmx16mmx5.18mm)
Package
Order directly from MonolithicPower.com or our distributors.
PACKAGE REFERENCE
TOP VIEW
NC2
NC3
M
L
VIN
VIN
K
J
PMODE
RAMP1 H
SW1
G
RAMP2
F
MODE
SS1
FB1
EN1
VCC
SW2
PG1
PG2
EN2
VSOUT
VSOUT
NC4
GND
NC1 FSET2
GND
E
VS1N FB2 SS2
GND
D
FSET1 VS2N VS2P
VS1P
C
B
VOUT1
VOUT2
GND
A
1
2
3
4
5
6
7
8
9
10
11
12
BGA Package (16mm×16mmx5.18mm)
MPM3690-20 Rev. 1.0
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5/12/2021
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© 2021 MPS. All Rights Reserved.
3
MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
PIN NUMBER LIST
Table 1: Pins A1~F12
Pin # Function Pin # Function Pin # Function Pin # Function Pin # Function Pin # Function
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
GND
GND
VOUT2
VOUT2
VOUT2
VOUT2
VOUT2
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
GND
GND
VOUT2
VOUT2
VOUT2
VOUT2
VOUT2
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
VOUT1
VOUT1
VOUT1
VOUT1
VS1P
FSET1
VS2N
VS2P
VOUT2
VOUT2
VOUT2
VOUT2
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
GND
GND
GND
GND
FB1
VS1N
FB2
SS2
GND
GND
GND
GND
E1
E2
E3
E4
E5
E6
E7
E8
E9
E10
E11
E12
GND
GND
GND
GND
SS1
NC1
FSET2
VSOUT
NC4
GND
GND
GND
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
GND
GND
GND
MODE
EN1
GND
GND
VSOUT
EN2
GND
GND
GND
Table 2: Pins G1~M12
Pin # Function Pin # Function Pin # Function Pin # Function Pin # Function Pin # Function
G1
G2
G3
G4
G5
G6
G7
G8
G9
G10
G11
G12
GND
SW1
GND
RAMP2
RAMP1
PMODE
GND
PG2
PG1
GND
SW2
GND
H1
H2
H3
H4
H5
H6
H7
H8
H9
H10
H11
H12
GND
GND
GND
GND
GND
GND
GND
VCC
GND
GND
GND
GND
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
J12
GND
VIN
VIN
VIN
GND
NC2
NC3
GND
VIN
VIN
VIN
GND
K1
K2
K3
K4
K5
K6
K7
K8
K9
K10
K11
K12
GND
VIN
VIN
VIN
GND
GND
GND
GND
VIN
VIN
VIN
GND
L1
L2
L3
L4
L5
L6
L7
L8
L9
L10
L11
L12
GND
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
GND
M1
M2
M3
M4
M5
M6
M7
M8
M9
M10
M11
M12
MPM3690-20 Rev. 1.0
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GND
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
GND
4
MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
PIN FUNCTIONS
Pin Number
Name
A1–A5, B1–B5, C1–C4
VOUT1
Power output 1. These pins are the power output pins for channel
1.
A6, A7, B6-B7, D1–D4, D9–
D12, E1–E4, E10, E11, E12,
F1, F2, F3, F6, F7, F10, F11,
F12, G1, G3, G7, G10, G12,
H1–H7, H9–H12, J1, J5, J8,
J12, K1, K5–K8, K12, L1, L12,
M1, M12
GND
Power ground. GND is the ground of the regulated output voltage.
A8–A12, B8–B12, C9–C12
VOUT2
C5, C8
VS1P,
VS2P
D6, C7
VS1N,
VS2N
C6, E7
FSET1,
FSET2
D5, D7
FB1, FB2
E5, D8
SS1, SS2
G5, G4
RAMP1,
RAMP2
E8, F8
VSOUT
F4
MODE
F5, F9
EN1, EN2
G2, G11
SW1, SW2
G6
PMODE
G9, G8
PG1, PG2
H8
VCC
E6, J6, J7, E9
M2–M11, L2–L11, J2, J3, J4,
J9, J10, J11, K2, K3K4, K9,
K10, K11
Description
Power output 2. These pins are the power output pins for channel
2.
Positive input of the remote-sense amplifier. Connect these pins
to the remote sense point of the output voltage.
Negative input of the remote-sense amplifier. Connect these pins
to the remote sense point of the output GND to enable remote sense.
Connect these pins directly to GND to disable the remote sense
function.
Frequency setting. Connect a resistor between this pin and GND to
configure the switching frequency between 400kHz and 1MHz. For
the MPM3690-20B, the resistors placed at FSET1 and FSET2 must
be the same value.
Feedback voltage. Connect a resistor between this pin and VS1N
or VS2N to configure the output voltage. This pin is connected to
VS1P or VS2P with a 60.4kΩ resistor.
Soft-start time setting. Connect a ceramic capacitor to these pins
to set the soft-start time.
Ramp selection pin. Float these pins to set the internal
compensation ramp to a high value. Pull these pins low to set the
internal compensation ramp to a low value.
Not connected (internally floated). Float these pins.
Operation mode setting. Pull MODE up to VCC for forced
continuous conduction mode (FCCM).
Enable pins. Drive the EN pins high to turn the output on; drive the
EN pins low to turn the output off. Do not float EN1 or EN2.
Switching nodes. Float these pins.
Protection mode selection. Connect PMODE to GND for latch-off
mode. Pull PMODE up to to VCC for retry (hiccup) mode.
Power good outputs. The output of the PG pins is an open drain.
Pull the PG pins high with a pull-up resistor.
Output of the internal power supply. Float this pin or connect it to
an external 3.3V power supply to improve efficiency.
NC1, NC2,
Not connected (internally floating). Float these pins.
NC3, NC4
VIN
Supply voltage. Connect the input voltage between these pins and
the GND pins.
MPM3690-20 Rev. 1.0
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5
MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
ABSOLUTE MAXIMUM RATINGS (1)
Supply voltage (VIN) ..................................... 18V
VSW1/2 (DC) ................................-0.3 V to +18.3V
VCC ............................................................ 4.5V
VCC (1s) (3)...................................................... 6V
VOUT1/2 ........................................................ 5.5V
All other pins ................................-0.3V to +4.3V
All other pins (1s) (3) ....................................... 6V
Continuous power dissipation (TA = 25°C) (2)
............................................................... 18.59W
Junction temperature ................................170°C
Lead temperature .....................................260°C
Storage temperature ................ -65°C to +170°C
Recommended Operating Conditions (3)
Supply voltage (VIN) ............................ 4V to 16V
Output voltage (VOUT) ...................... 0.6V to 3.3V
Operating junction temp (TJ) .... -40°C to +125°C
Thermal Resistance (4)
θJA
θJC
EVM3690-20B-BF-00A ..........7.8 ..... 4.1 .. °C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature, TJ (MAX), the junction-toambient thermal resistance, θJA, and the ambient temperature,
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX) - TA) / θJA. Exceeding the maximum allowable power
dissipation can produce an excessive die temperature, and the
module may go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
3) The device is not guaranteed to function outside of its operating
conditions.
4) Measured
on
EVM3690-20B-BF-00A,
4-layer
PCB,
10cmx10cm.
MPM3690-20 Rev. 1.0
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MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
ELECTRICAL CHARACTERISTICS
VIN = 12V, TJ = -40°C to +125°C, unless otherwise noted.
Parameters
Symbol
Condition
Min
Typ
Max
Units
EN = 0V, FB = 0.65V
RFREQ = 30kΩ to GND
1.5
2
mA
Individual phase current limit，
fSW = 800kHz,VOUT = 1.2V
15.7
A
-13
A
800
50
220
kHz
ns
ns
VIN Supply Current
Supply current (quiescent)
IIN
Output Current Limit
Output current limit (inductor
valley)
ILIM_VALLEY
Low-side negative current
ILIM_NEG
Individual phase current limit
limit
Frequency and Timer
Switching frequency
fSW
RFREQ = 30kΩ
(5)
Minimum on time
tON_MIN
fSW = 800kHz, VOUT = 0.6V
(5)
Minimum off time
tOFF_MIN
Output Over-Voltage and Under-Voltage Protection
OVP threshold
VOVP
UVP threshold
VUVP
EN
Input High voltage
VIH_EN
Input low voltage
VIL_EN
116%
70%
120%
74%
124%
79%
2.15
VREF
VREF
V
1.20
V
Feedback Voltage
594
600
606
mV
15
20
25
μA
VFB = 0.65V
50
100
nA
TJ = 25°C
60
120
Ω
Feedback accuracy
Soft Start
Soft-start current
Error Amplifier
Feedback current
Soft Shutdown
Soft shutdown discharge FET
UVLO
VCC under-voltage lockout
rising threshold
VCC under-voltage lockout
falling threshold
VCC output voltage
Power Good (PG)
Power good high threshold
Power good low threshold
Power good sink current
capability
Power good leakage current
ISS
IFB
RON_DISCH
VCCVTH_RISE
2.6
2.75
2.9
V
VCCVTH_FALL
2.3
2.45
2.6
V
VCC
3.1
3.25
3.4
V
PGVTH_HI_RISE FB from low to high
PGVTH_LO_RISE FB from low to high
PGVTH_LO_FALL FB from high to low
VPG
IPG_LEAK
88.5%
116%
70%
92.5% 96.5%
120% 124%
74%
78%
IPG = 10mA
VPG = 3V, TJ = 25°C
1.5
MPM3690-20 Rev. 1.0
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VREF
VREF
VREF
0.3
V
2.5
µA
7
MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
ELECTRICAL CHARACTERISTICS (continued)
VIN = 12V, TJ = -40°C to +125°C, unless otherwise noted.
Parameters
Power good low-level output
voltage
Thermal Protection
Thermal shutdown threshold
(5)
Thermal hysteresis threshold
(5)
Symbol Condition
VOL_100
VOL_10
VIN = 0V, pull PG up to 3.3V through
a 100kΩ resistor, TJ = 25C
VIN = 0V, pull PG up to 3.3V through
a 10kΩ resistor, TJ = 25C
Min
Typ
Max
600
720
700
820
Units
mV
160
°C
30
°C
Note:
5) Guaranteed by sample characterization. Not tested in production. The parameter is tested during parameter characterization.
MPM3690-20 Rev. 1.0
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8
MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
TYPICAL PERFORMANCE CHARACTERISTICS
MPM3690-20A, VIN = 12V, VOUT1 = VOUT2 = 1.2V, COUT1 = COUT2 = 690µF, fSW1 = fSW2 = 500kHz, FCCM,
TA = 25°C, unless otherwise noted.
Efficiency vs. Load Current
Efficiency vs. Load Current
VIN = 5V, with internal 3.3V VCC
100
95
95
90
85
80
75
70
VOUT=1.8V, FSW=600kHz
VOUT=1.5V, FSW=600kHz
VOUT=1.2V, FSW=500kHz
EFFICIENCY (%)
EFFICIENCY (%)
100
VIN = 12V, with internal 3.3V VCC
VOUT=1.0V, FSW=500kHz
90
85
80
VOUT=1.5V, FSW=600kHz
75
70
VOUT=0.8V, FSW=400kHz
65
Efficiency vs. Load Current
85
Vout=1.5V,Fsw=600KHz
Vout=1.8V,Fsw=600KHz
Vout=1.2V,Fsw=500KHz
Vout=1V,Fsw=500KHz
65
0 1 2 3 4 5 6 7 8 9 10 11 12 13
LOAD CURRENT (A)
0.2
REGULATION (%)
EFFICIENCY (%)
90
70
VOUT=0.8V, FSW=400kHz
Load Regulation
VIN = 12V, with external 3.3V VCC
95
75
VOUT=1.0V, FSW=500kHz
0 1 2 3 4 5 6 7 8 9 10 11 12 13
LOAD CURRENT (A)
LOAD CURRENT (A)
80
VOUT=1.2V, FSW=500kHz
65
0 1 2 3 4 5 6 7 8 9 10 11 12 13
100
VOUT=1.8V, FSW=600kHz
0.15
0.1
0.05
0
-0.05
-0.1
-0.15
VOUT=1.8V,Fsw=600kHz
VOUT=1.5V,Fsw=600kHz
VOUT=1.2V,Fsw=500kHz
VOUT=1V,Fsw=500kHz
-0.2
0 1 2 3 4 5 6 7 8 9 10 11 12 13
LOAD CURRENT (A)
MPM3690-20 Rev. 1.0
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MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
MPM3690-20A, VIN = 12V, VOUT1 = VOUT2 = 1.2V, COUT1 = COUT2 = 690µF, fSW1 = fSW2 = 500kHz, FCCM,
TA = 25°C, unless otherwise noted.
Ripple
Ripple
IOUT1 = IOUT2 = 0A
IOUT1 = IOUT2 = 13A
CH1:
VOUT1/AC
CH1:
VOUT1/AC
CH2:
CH2:
VOUT2/AC
VOUT2/AC
Start-Up through VIN
Start-Up through VIN
IOUT1 = IOUT2 = 0A
IOUT1 = IOUT2 = 13A
CH1: VOUT1
CH1: VOUT1
CH2: VOUT2
CH2: VOUT2
CH3: VIN
CH3: VIN
R1: IOUT1
R1: IOUT1
CH4: IOUT2
CH4: IOUT2
Shutdown through VIN
Shutdown through VIN
IOUT1 = IOUT2 = 0A
IOUT1 = IOUT2 = 13A
CH1: VOUT1
CH1: VOUT1
CH2: VOUT2
CH2: VOUT2
CH3: VIN
CH3: VIN
R1: IOUT1
R1: IOUT1
CH4: IOUT2
CH4: IOUT2
MPM3690-20 Rev. 1.0
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MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
MPM3690-20A, VIN = 12V, VOUT1 = VOUT2 = 1.2V, COUT1 = COUT2 = 690µF, fSW1 = fSW2 =500kHz, FCCM,
TA = 25°C, unless otherwise noted.
Start-Up through EN
Start-Up through EN
IOUT1 = 0A
IOUT1 = 13A
CH1: VOUT1
CH1: VOUT1
CH2: VEN1
CH2: VEN1
CH3: VPG1
CH3: VPG1
CH4: IOUT1
CH4: IOUT1
Shutdown through EN
Shutdown through EN
IOUT1 = 0A
IOUT1 = 13A
CH1: VOUT1
CH1: VOUT1
CH2: VEN1
CH2: VEN1
CH3: VPG1
CH3: VPG1
CH4: IOUT1
CH4: IOUT1
Load Transient
Load Transient
3.25A load step, 10A/µs, COUT = 10 x 47µF,
ceramic + 220µF POSCAP, CFF = 33nF, high
ramp
6.5A load step, 10A/µs, COUT = 10 x 47µF
ceramic + 220µF POSCAP, CFF = 33nF, high
ramp
CH1:
VOUT1/AC
CH4: IOUT1
`
MPM3690-20 Rev. 1.0
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MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
MPM3690-20B, VIN = 12V, VOUT = 1.2V, COUT = 1380µF, fSW = 500kHz, FCCM, TA = 25°C, unless
otherwise noted.
Efficiency vs. Load Current
Efficiency vs. Load Current
100
100
95
95
EFFICIENCY (%)
EFFICIENCY (%)
VIN = 12V,with internal 3.3V VCC
90
85
80
VOUT=1.8V, FSW=600kHz
VOUT=1.5V, FSW=600kHz
75
VOUT=1.2V, FSW=500kHz
VOUT=1.0V, FSW=500kHz
70
VIN = 12V, with external 3.3V VCC
90
85
VOUT=1.8V,Fsw=600kHz
80
VOUT=1.5V,Fsw=600kHz
75
VOUT=1.2V,Fsw=600kHz
VOUT=1V,Fsw=600kHz
70
VOUT=0.8V, FSW=400kHz
VOUT=0.8V,Fsw=600kHz
65
65
0
5
10
15
20
LOAD CURRENT (A)
25
0
0.2
0.20
0.15
0.15
0.1
0.05
0
-0.05
-0.1
IOUT=0A
IOUT=13A
-0.15
25
0.10
0.05
0.00
-0.05
VOUT=1.8V,Fsw=600kHz
-0.10
VOUT=1.2V,Fsw=600kHz
-0.15
IOUT=26A
-0.2
VOUT=0.8V,Fsw=600kHz
-0.20
4
8
12
INPUT VOLTAGE (V)
16
0
Case Temperature Rising vs.
Load Current
40
VOUT=1.2V, FSW=500K
VOUT=0.8V, FSW=400K
30
25
20
15
10
5
0
5
25
30
25
20
15
10
VOUT=1.8V,
FSW=600K
VOUT=1.2V,
FSW=500K
VOUT=0.8V,
FSW=400K
5
0
0
10
15
20
LOAD CURRENT (A)
VIN = 12V, 1m/s air flow
VOUT=1.8V, FSW=600K
35
5
Thermal derating
VIN = 12V
MAX LOAD CURRENT (A)
CASE TEMPERATURE RISING (℃)
10
15
20
LOAD CURRENT (A)
Load Regulation
REGULATION (%)
REGULATION (%)
Line Regulation
5
10
15
20
LOAD CURRENT (A)
25
90
100
110
AMBIENT TEMPERATURE (℃)
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12
MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
MPM3690-20B, VIN = 12V, VOUT = 1.2V, COUT = 1380µF, fSW = 500kHz, FCCM, TA = 25°C, unless
otherwise noted.
Ripple
Ripple
IOUT = 0A, COUT = 20 x 47µF ceramic +2 x
220µF POSCAP
IOUT = 26A, COUT = 20 x 47µF ceramic + 2 x
220µF POSCAP
CH1:
VOUT/AC
CH1:
VOUT/AC
CH2: VIN
CH2: VIN
CH3: VPG
CH3: VPG
CH4: IOUT
CH4: IOUT
Start-Up through VIN
Start-Up through VIN
IOUT = 0A
IOUT = 26A
CH1: VOUT
CH1: VOUT
CH2: VIN
CH2: VIN
CH3: VPG
CH3: VPG
CH4: IOUT
CH4: IOUT
Shutdown through VIN
Shutdown through VIN
IOUT = 0A
IOUT = 26A
CH1: VOUT
CH1: VOUT
CH2: VIN
CH2: VIN
CH3: VPG
CH3: VPG
CH4: IOUT
CH4: IOUT
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MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
MPM3690-20B, VIN = 12V, VOUT = 1.2V, COUT = 1380µF, fSW = 500kHz, FCCM, TA = 25°C, unless
otherwise noted.
Start-Up through EN
Start-Up through EN
IOUT = 0A
IOUT = 26A
CH1: VOUT
CH1: VOUT
CH2: VEN
CH2: VEN
CH3: VPG
CH3: VPG
CH4: IOUT
CH4: IOUT
Shutdown through EN
Shutdown through EN
IOUT = 0A
IOUT = 26A
CH1: VOUT
CH1: VOUT
CH2: VEN
CH2: VEN
CH3: VPG
CH3: VPG
CH4: IOUT
CH4: IOUT
Load Transient
Load Transient
6.5A load step, 10A/µs, COUT = 20 x 47µF
ceramic+ 2 x 220µF POSCAP, CFF = 33nF,
high ramp
13A Load Step, 10A/µs, COUT = 20 x 47µF
ceramic + 2 x 220µF POSCAP, CFF = 33nF,
high ramp
CH1: VOUT
CH4: IOUT
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MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
FUNCTIONAL BLOCK DIAGRAMS
VCC
VCC
11kΩ
2.2Ω
0.1µF
BST1
1µF
11kΩ
VIN
VIN =
4V To 16V
VOUT1
VOUT1 =
1.0V/13A
1µF + 2 x
0.1µF
TK_MST
VDRV1
0.22µH
1µF
RAMP1
SW1
PG1
GND
VS1N
EN1
FB1 90.9kΩ
Power
Control
MODE
60.4kΩ
VS1P
FSET1
PMODE
PASS_MST
SS1
ILIM1
SET1
11kΩ
0.1µF
VCC
BST2
1µF
11kΩ
AGND
PGND
ISUM1
115kΩ
TK_SLV
1µF + 2 x
0.1µF
VDRV2
0.22µH
2.2Ω
VIN
VOUT2
RAMP2
SW2
PG2
GND
VOUT2 =
1.0V/13A
VS2N
EN2
FB2 90.9kΩ
Power
Control
MODE
60.4kΩ
VSOUT
PMODE
VS2P
FSET2
PASS_SLV
SS2
SET2
ILIM2
AGND
PGND
ISUM2
115kΩ
Figure 2: MPM3690-20A Functional Block Diagram
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MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
FUNCTIONAL BLOCK DIAGRAMS (continued)
VCC
VCC
11kΩ
11kΩ
0.1µF
BST1
1µF
VIN
VIN =
4V To 16V
VOUT1
VOUT =
1.0V/26A
1µF + 2 x
0.1µF
2.2Ω TK_MST
VDRV1
0.22µH
1uF
RAMP1
SW1
PG1
GND
VS1N
FB1
EN1
Power
Control
MODE
60.4kΩ
90.9kΩ
VS1P
FSET1
PMODE
PASS_MST
SS1
ILIM1
SET1
11kΩ
0.1µF
VCC
BST2
1µF
AGND
PGND
ISUM1
115kΩ
TK_SLV
1µF + 2 x
0.1µF
VDRV2
0.22µH
2.2Ω
RAMP2
VIN
VOUT2
SW2
PG2
GND
VS2N
EN2
FB2
Power
Control
MODE
60.4kΩ
VSOUT
VS2P
PMODE
FSET2
PASS_SLV
SS2
SET2
ILIM2
AGND
PGND
ISUM2
115kΩ
Figure 3: MPM3690-20B Functional Block Diagram
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MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
OPERATION
The MPM3690-20 is a dual 13A output or single
26A output power module that integrates two
inductors and two monolithic power ICs. The
MPM3690-20 utilizes constant-on-time (COT)
control to provide a fast transient response.
Multi-Phase Operation
The
MPM3690-20B
adopts
multi-phase
constant-on-time (MCOT) control. MCOT control
configures the two ICs for master and slave
functionality. For the MPM3690-20B, the supply
voltage (VIN) slew rate during start-up must
exceed 2V/ms.
MCOT Operation: Master Phase
The master phase performs the following
functions:
Generates the SET signal.
Manages start-up, shutdown, and all of the
protection functions.
Monitors fault alerts from the slave phases
through the PG pin.
Generates the first on pulse.
Generates the on pulse when receiving RUN
and SET signals.
Determines the on pulse width of its own
phase based on the per-phase and total
current.
Sends the PASS and TAKE signals.
MCOT Operation: Slave Phases
The slave phases perform the
functions:
following
Receive SET signal(s) from a master phase.
Start the on pulse when receiving RUN and
SET signals.
Send over-voltage (OV), under-voltage (UV),
and over-temperature (OT) alerts to the
master phase through the PG pin.
Determine the on pulse width of its own
phase based on the per-phase and total
current.
Sends the PASS and TAKE signals.
compared to the traditional current mode control
scheme.
When a load step-up occurs, the FB signal is
lower than the internal reference. Meanwhile, the
SET signal is generated more frequently than it
is during steady state operation to respond to the
load transient. Depending on the size of the load
transient step and the slew rate, the SET signal
can be generated within a minimum 50ns
interval. This means that the next phase can turn
on only 50ns after the previous phase has turned
on to provide ultra-fast load transient response.
RAMP Compensation
The MPM3690-20 can operate with various
output capacitors by using internal ramp
compensation. The RAMP pin selects the ramp
value. Float RAMP for large ramp compensation.
Connect RAMP to ground for small ramp
compensation.
The
RAMP
signal
is
superimposed onto the FB signal.
When the superimposed (RAMP + VFB) signal
reaches the internal reference signal, a new SET
signal is generated. This SET signal then
generates a PWM on pulse.
A larger RAMP signal reduces system jitter but
results in a slower load transient response, and
vice versa. Optimize ramp compensation based
on the application and design target.
Mode Setting
The MPM3690-20 only supports forced
continuous conduction mode (FCCM). Set the
MODE pin to logic high to force the device to
operate in FCCM.
Soft Start (SS)
The MPM3690-20A features an adjustable softstart time for both output channels. The soft-start
time can be configured by connecting a capacitor
(CSS) between the SS pin and GND. The softstart time can be calculated with Equation (1):
t SS (ms) 30 CSS (μF)
(1)
Switching Frequency
The MPM3690-20A features an adjustable
switching frequency for both output channels.
MCOT control allows the MPM3690-20B to
quickly respond to a load step transient when
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MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
For the MPM3690-20B, the FREQ resistor for
both channels must be the same value. The
switching frequency (fSW) can be configured by
connecting a resistor between the FREQ pin and
GND. fSW can be estimated with Equation (2):
fSW (MHz)
24
RT (kΩ)
(2)
Output Voltage Discharge
When the MPM3690-20 is disabled through the
EN pin, the output voltage discharge function is
enabled. Both the high-side MOSFET (HS-FET)
and low-side MOSFET (LS-FET) latch off. A
discharge FET connected between SW and
GND turns on to discharge the output voltage.
The typical switch on resistance of this FET is
about 50Ω. Once the VFB drops below 10% of
VREF, the discharge FET turns off.
Protection Mode Selection (PMODE)
The MPM3690-20 has a protection mode
selection function via the PMODE pin. For hiccup
mode, drive PMODE high if over-current
protection (OCP), over-voltage protection (OVP),
or over-temperature protection (OTP) is
triggered. For latch-off mode, pull PMODE to
GND if one of the above protections occur.
LS-FET for a certain period to limit the negative
current.
Over-Temperature Protection (OTP)
The MPM3690-20 features over-temperature
protection (OTP). The IC internally monitors the
junction temperature. If the junction temperature
exceeds the OTP threshold, the converter shuts
off.
After OTP is triggered, the device enters latchoff mode or hiccup mode. If the device latches
off, it can only be re-enabled by recycling power
on VCC or EN.
Feedback Circuit
For the MPM3690-20A, connect a resistor
between FB1 and VS1N, then FB2 and VS2N, to
set the device’s output voltages. For the
MPM3690-20B, connect a resistor between FB1
and VS1N to set the output voltage, then tie FB1
to FB2.
A 60.4kΩ resistor is connected between FB1 and
VS1P, and between FB2 and VS2P (see Figure
2 on page 15). Figure 4 shows the feedback
circuit.
EAMP
Reference
To PWM
FB
Inductor Valley Over-Current Protection
(OCP)
The MPM3690-20 features an on-die current
sense. When the LS-FET is on, the SW current
(inductor current) is sensed and monitored cycle
by cycle. When VFB drops below VREF, the HSFET can only turn on if the LS-FET does not
detect an over-current (OC) condition while the
LS-FET is on. This is cycle-by-cycle current
limiting.
There must be 31 consecutive cycles of an OC
condition or an output short-circuit condition to
trigger OCP. If the output voltage falls below the
under-voltage protection (UVP) threshold, the
device initiates OCP immediately.
If OCP is triggered, the device enters latch-off
mode or hiccup mode depending on the PMODE
pin. If the device latches off, it can only be reenabled by recycling power on VCC or VIN.
Negative Inductor Current limit
If the LS-FET detects a negative current below
the negative current limit, the device turns off the
VOUT
VS1P
RFB1
60.4kΩ
FB1
COUT
RFB2
VS1N
Figure 4: Feedback Circuit of the MPM3690-20
VOUT can be calculated with Equation (3):
VOUT VREF (1
RFB1
)
RFB2
(3)
Where VREF is the reference voltage (about
0.6V), and RFB1 = 60.4kΩ.
Power Good (PG)
The MPM3690-20A has a power good (PG)
output for each channel. The PG pin is the open
drain of a MOSFET. Connect PG to VCC or to
an external voltage source that measures less
than 3.6V through a pull-up resistor (typically
100kΩ). After applying the input voltage, the
MOSFET turns on so that the PG pin is pulled to
GND before soft start is complete.
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MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
2
1.8
1.6
1.4
IPG ( mA)
After VFB reaches the power good high threshold,
the PG pin is pulled high after a delay. If the
converter encounters any fault (e.g. undervoltage, over-voltage, over-temperature, or
under-voltage lockout), the PG pin is latched low.
After PG is latched low, it cannot be pulled high
until a new soft start is initialized.
1.2
1
0.8
If the input supply fails to power the MPM369020, PG is clamped low, even if PG is tied to an
external DC source through a pull-up resistor.
Figure 5 shows the relationship between the PG
voltage and the pull-up current.
0.6
0.4
0.2
0
0.6
0.65
0.7
0.75
0.8
0.85
0.9
VPG (V)
Figure 5: PG current vs. PG voltage
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MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
APPLICATION INFORMATION
Selecting the Input Capacitor
The step-down converter has a discontinuous
input current, and requires a capacitor to supply
the AC current to the converter while maintaining
the DC input voltage. Use ceramic capacitors for
the best performance. When designing the
layout, place the input capacitors as close to the
VIN pin as possible.
The capacitance can vary significantly with
temperature. Use ceramic capacitors with X5R
and X7R dielectrics because they are fairly
stable across a wide temperature range.
The capacitors must also have a ripple current
rating that exceeds the converter’s maximum
input ripple current. Estimate the input ripple
current with Equation (4):
ICIN IOUT
VOUT
V
(1 OUT )
VIN
VIN
(4)
The worst-case condition occurs at VIN = 2VOUT,
calculated with Equation (5):
ICIN
IOUT
2
(5)
For simplification, choose an input capacitor with
an RMS current rating that exceeds half the
maximum load current.
The input capacitance determines the
converter’s input voltage ripple. Select a
capacitor value that meets any input voltage
ripple requirements.
Selecting the Output Capacitor
The output capacitor maintains the DC output
voltage. The output voltage ripple can be
estimated with Equation (8):
ΔVOUT
VOUT VOUT
1
1
(8)
RESR
fsw L
VIN
8 fsw COUT
When using ceramic capacitors, the capacitance
dominates the impedance at the switching
frequency and causes most of the output voltage
ripple. For simplification, calculate the output
voltage ripple with Equation (9):
ΔVOUT
VOUT
V
1 OUT
VIN
8 fsw L COUT
2
(9)
When using capacitors with a larger ESR (e.g.
POSCAP or OSCON capacitors), the ESR
dominates the impedance at the switching
frequency. This means that the output voltage
ripple is determined by the ESR. For
simplification, the output ripple can be estimated
with Equation (10):
ΔVOUT
VOUT
V
1 OUT
fsw L
VIN
RESR
(10)
Low VIN Applications
For applications with a low input voltage (VIN)
between 3.0V and 4.0V, an external VCC bias
power supply is required. The external supply
must exceed 2.9V, which is the under-voltage
lockout (UVLO) rising threshold.
Estimate the input voltage with Equation (6):
ΔVIN
IOUT
V
V
OUT 1 OUT
fsw CIN
VIN
VIN
(6)
The worst-case condition occurs at VIN = 2VOUT,
calculated with Equation (7):
ΔVIN
I
1
OUT
4 fsw CIN
(7)
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MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
PCB Layout Guidelines
VIN
Place sufficient decoupling capacitors as close
as possible to the VIN and GND pins. Sufficient
GND vias should be placed around the GND pad
of the decoupling capacitors. Avoid placing
sensitive signal traces close to the input copper
plane and/or vias without sufficient ground
shielding. A minimum of four 22µF/25V ceramic
capacitors are recommended at the input
channel to provide sufficient decoupling.
the corresponding VOUT copper planes.
GND
Connect all GND pins of the module on a copper
plane. Place sufficient vias close to the GND pins
to provide a current return path with minimal
thermal resistance and parasitic impedance.
VSxP and VSxN
For the MPM3690-20A, route each pair of
VSxP/N pins as differential signals. For
MPM3690-20B, connect FB1 to FB2, then
connect all VSxN pins. Avoid routing the VSxP/N
traces close to the input plane and high-speed
signals.
VOUTx
Connect each VOUTx pin together on a copper
plane. Place sufficient vias near the VOUTx pads
to provide a current path with minimal parasitic
impedance. For the MPM3690-20B, combine all
VIN
CIN1
CIN3
CIN2
CIN4
VIN
VIN
NC2
NC3
VCC
SW1
PG2
RAMP2 RAMP1 PMODE
MODE
GND
EN1
GND
VSOUT EN2
VSOUT NC4
SS1
NC1
fSET2
FB1
VS1N
FB2
SS2
VS1P
fSET1
VS2N
VS2P
VOUT1
SW2
GND
CO3
CO1
CO2
PG1
GND
CO4
VOUT2
Figure 6: Recommended PCB Layout
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MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
TYPICAL APPLICATION CIRCUITS
10kΩ
4V to 16V
Input
VIN
VCC
MODE
CIN
VS1P
FB1
EN1
EN2
EN1
EN2
VOUT1 = 1.2V/13A
VOUT1
COUT
60.4kΩ
VS1N
MPM3690-20A
CSS1
RFB1
VOUT2 = 0.9V/13A
VOUT2
CSS2
VS2P
FB2
COUT
RFB2
121kΩ
VS2N
RF1
RF2
Figure 7: Dual-Output Operation, 1.2V and 0.9V at 13A (Remote Sense Enabled for Both Outputs)
10kΩ
4V to 16V
Input
VIN
MODE
VCC
CIN
EN1
EN2
EN1
EN2
VOUT1 = 1.2V/13A
VOUT1
VS1P
FB1
RFB1
VS1N
60.4kΩ
MPM3690-20A
CSS1
COUT
VOUT2 = 0.9V/13A
VOUT
CSS2
COUT
VS2P
FB2
VS2N
RF1
RFB2
121kΩ
RF2
Figure 8: Dual-Output Operation, 1.2V and 0.9V at 13A (Remote Sense Disabled)
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MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
TYPICAL APPLICATION CIRCUITS (continued)
10kΩ
4V to 16V
Input
VIN
VCC
MODE
CIN
VOUT = 1.2V/26A
VOUT1
VS1P
FB1
EN1
EN2
EN
PG
RFB
COUT
60.4kΩ
VS1N
MPM3690-20B
VOUT2
CSS1
COUT
VS2P
FB2
RF
VS2N
RF
Figure 9: Interleaved Operation, 1.2V at 26A (Remote Sense Enabled)
10kΩ
4V to 16V
Input
VIN
MODE
VCC
CIN
VOUT = 1.2V/26A
VOUT1
VS1P
FB1
EN1
EN2
EN
PG
COUT
RFB
VS1N
60.4kΩ
MPM3690-20B
VOUT2
CSS1
VS2P
COUT
FB2
RF1
VS2N
RF2
Figure 10: Interleaved Operation, 1.2V at 26A (Remote Sense Disabled)
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MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
PACKAGE INFORMATION
BGA (16mmx16mmx5.18mm)
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MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
CARRIER INFORMATION
Detail A
All package in Tray
Pin 1
ABCD
1
Detail A
Note:
6) This is a schematic diagram of the tray. Different packages correspond to different trays with different lengths, widths, and heights
Part Number
Package Description
MPM3690GBF20A
MPM3690GBF20B
BGA
(16mmx16mmx5.18mm)
BGA
(16mmx16mmx5.18mm
Quantity/
Tube
Quantity/
Tray
Reel
Diameter
Carrier
Tape
Width
Carrier
Tape
Pitch
N/A
90
N/A
N/A
N/A
N/A
90
N/A
N/A
N/A
MPM3690-20 Rev. 1.0
MonolithicPower.com
5/12/2021
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2021 MPS. All Rights Reserved.
25
MPM3690-20A/B – 16V, DUAL 13A OR SINGLE 26A OUTPUT POWER MODULE
REVISION HISTORY
Revision #
1.0
Revision Date
5/12/2021
Description
Initial Release
Pages Updated
-
Notice: The information in this document is subject to change without notice. Please contact MPS for current specifications.
Users should warrant and guarantee that third-party Intellectual Property rights are not infringed upon when integrating MPS
products into any application. MPS will not assume any legal responsibility for any said applications.
MPM3690-20 Rev. 1.0
MonolithicPower.com
5/12/2021
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2021 MPS. All Rights Reserved.
26
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