MPM3690-30A/B
16V, Dual 18A or Single 36A
DC/DC Power Module
DESCRIPTION
FEATURES
The MPM3690-30 is a dual 18A or single 36A
output power module, which offers a complete
power solution with excellent load and line
regulation. The MPM3690-30 supports a 4V to
16V input voltage (VIN) range and a 0.6V to 3.3V
output voltage (VOUT) range. The voltage of the
MPM3690-30’s two outputs can be set
separately by a single resistor per output.
The MPM3690-30 offers two configurations: the
MPM3690-30A has a dual 18A output, and the
MPM3690-30B has a single 36A output. The
MPM3690-30 is also pin-compatible with the
MPM3690-20A/B (dual 13A or single 26A) and
the MPM3690-50A/B (dual 25A or single 50A)
power modules.
The MPM3690-30 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 18A and Single 36A
Output Power Modules
o MPM3690-30A Dual 18A
o MPM3690-30B Single 36A
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 ConstantOn-Time (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 MPM3690-20 and
MPM3695-50
Available in a BGA (16mmx16mmx5.18mm)
Package
APPLICATIONS
The MPM3690-30 integrates monolithic DC/DC
converter, power inductor, and other passive
components, and 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
Interleaved Operation at 1.2V, 36A
10k
Efficiency vs. Load Current
4V to 16V Input
MODE
VCC
CIN
VS1P
FB1
EN1
EN2
EN
PG
100
RFB
COUT
60.4k
VS1N
MPM3690-30B
VOUT2
CSS1
VS2P
FB2
RF
VS2N
RF
VIN = 12V, with external 3.3V VCC
VOUT1
COUT
95
EFFICIENCY (%)
VIN
VOUT = 1.2V/36A
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
0
5
10
15
20
25
LOAD CURRENT (A)
MPM3690-30A/B Rev. 1.0
MonolithicPower.com
5/11/2021
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© 2021 MPS. All Rights Reserved.
30
35
1
MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
ORDERING INFORMATION
Part Number*
MPM3690GBF-30A
MPM3690GBF-30B
Configuration
Dual 18A output
Single 36A output
Package
BGA
(16mmx16mmx5.18mm)
Top Marking
MSL Rating
See Below
3
* For Tray, add suffix -T (e.g. MPM3690GBF-30A-T).
TOP MARKING (MPM3690GBF-30A)
MPS: MPS prefix
YY: Year code
WW: Week code
M3690-30A: Part number
LLLLLLLLL: Lot number
M: Module
TOP MARKING (MPM3690GBF-30B)
MPS: MPS prefix
YY: Year code
WW: Week code
M3690-30B: Part number
LLLLLLLLL: Lot number
M: Module
MPM3690-30A/B Rev. 1.0
MonolithicPower.com
5/11/2021
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2021 MPS. All Rights Reserved.
2
MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A 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,
package
4V to 16V input,
package
4V to 16V input,
package
4V to 16V input,
package
4V to 16V input,
package
4V to 16V input,
package
0.6V to 3.3V output, BGA (16mmx16mmx5.18mm)
0.6V to 3.3V output, BGA (16mmx16mmx5.18mm)
0.6V to 3.3V output, BGA (16mmx16mmx5.18mm)
0.6V to 3.3V output, BGA (16mmx16mmx5.18mm)
0.6V to 1.8V output, BGA (16mmx16mmx5.18mm)
0.6V to 1.8V output, BGA (16mmx16mmx5.18mm)
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 (16mmx16mmx5.18mm)
MPM3690-30A/B Rev. 1.0
MonolithicPower.com
5/11/2021
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2021 MPS. All Rights Reserved.
3
MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
PIN FUNCTIONS
Pin #
A1, A2, A3, A4, A5, B1, B2, B3, B4,
B5, C1, C2, C3, C4
A6, A7, B6, B7, D1, D2, D3, D4, D9,
D10, D11, D12, E1, E2, E3, E4, E10,
E11, E12, F1, F2, F3, F6, F7, F10,
F11, F12, G1, G3, G7, G10, G12, H1,
H2, H3, H4, H5, H6 H7, H9, H10,
H11, H12, J1, J5, J8, J12, K1, K5, K6,
K7, K8, K12, L1, L12, M1, M12
A8, A9, A10, A11, A12, B8, B9, B10,
B11, B12, C9, C10, C11, C12
C5, C8
D6, C7
C6, E7
D5, D7
E5, D8
G5, G4
E8, F8
F4
F5, F9
G2, G11
G6
G9, G8
H8
E6, J6, J7, E9
M2, M3, M4, M5, M6, M7, M8, M9,
M10, M11, L2, L3, L4, L5, L6, L7, L8,
L9, L10, L11, J2, J3, J4, J9, J10, J11,
K2, K3, K4, K9, K10, K11
Name
VOUT1
GND
VOUT2
Description
Power output 1. Power output pins for channel 1.
Power ground. GND is the ground of the regulated output
voltage (VOUT).
Power output 2. Power output pins for channel 2.
VS1P,
VS2P
Positive input of the remote-sense amplifier. Connect
these pins to the VOUT remote sense point.
Negative input of the remote-sense amplifier. Connect
VS1N,
these pins to the output GND remote sense point to enable
VS2N
remote sense. Connect to GND to disable remote sense
functionality.
Frequency set. Connect a resistor between these pins and
FSET1,
AGND to configure the switching frequency (fSW) between
FSET2
400kHz to 1MHz. For the MPM3690-30B, the of FSET1 and
FSET2 resistors must be the same.
Feedback voltage. Connect a resistor to these pins
FB1, FB2 between VS1N and VS2N to program VOUT. This pin is
connected to VS1P and VS2P with a 60.4kΩ resistor.
Soft-start time set. Connect a ceramic capacitor to set the
SS1, SS2
soft-start time (tSS).
Ramp selection pin. Float these pins to set the internal
RAMP1,
compensation ramp to high; pull these pins pin low to set the
RAMP2
internal compensation ramp to low.
VSOUT
Not connected (internally floated). Float these pins.
Operation mode set. Pull-up to VCC for forced continuous
MODE
conduction mode (FCCM).
Enable pins. Drive these pins high to turn the output on;
EN1, EN2
drive them low to turn the output off. Do not float these pins.
SW1, SW2 Switching nodes. Float these pins.
Protection mode selection. Connect to GND for latch-off
PMODE
mode, pull-up to VCC for auto-retry (hiccup) mode.
Power good outputs. The output of these is an open drain.
PG1, PG2
Pull these pins high with a pull-up resistor.
Output of the internal power supply. Float this pin or
VCC
connect it to an external 3.3V power supply to improve
efficiency.
NC1, NC2,
Not connected (internally floated). Float these pins.
NC3, NC4
VIN
Supply voltage. These pins provide power to the module.
Connect decoupling capacitors between the VIN and GND
pins.
MPM3690-30A/B Rev. 1.0
MonolithicPower.com
5/11/2021
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© 2021 MPS. All Rights Reserved.
4
MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
PIN MAP
Pin # Function Pin # Function Pin # Function Pin # Function Pin # Function Pin # Function
A1
A2
A3
A4
A5
A6
A6
A7
A8
A9
A10
A11
A12
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
GND
GND
GND
VOUT2
VOUT2
VOUT2
VOUT2
VOUT2
B1
B2
B3
B4
B5
B6
B6
B7
B8
B9
B10
B11
B12
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
GND
GND
GND
VOUT2
VOUT2
VOUT2
VOUT2
VOUT2
C1
C2
C3
C4
C5
C6
C6
C7
C8
C9
C10
C11
C12
VOUT1
VOUT1
VOUT1
VOUT1
VS1P
fSET1
fSET1
VS2N
VS2P
VOUT2
VOUT2
VOUT2
VOUT2
D1
D2
D3
D4
D5
D6
D6
D7
D8
D9
D10
D11
D12
GND
GND
GND
GND
FB1
VS1N
VS1N
FB2
SS2
GND
GND
GND
GND
E1
E2
E3
E4
E5
E6
E6
E7
E8
E9
E10
E11
E12
GND
GND
GND
GND
SS1
NC1
NC1
fSET2
VSOUT
NC4
GND
GND
GND
F1
F2
F3
F4
F5
F6
F6
F7
F8
F9
F10
F11
F12
GND
GND
GND
MODE
EN1
GND
GND
GND
VSOUT
EN2
GND
GND
GND
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
MPM3690-30A/B Rev. 1.0
MonolithicPower.com
5/11/2021
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2021 MPS. All Rights Reserved.
GND
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
GND
5
MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
ABSOLUTE MAXIMUM RATINGS (1)
Supply voltage (VIN) ..................................... 18V
VSW1,2 (DC) ....................................-0.3V to +18.3V
VCC ............................................................ 4.5V
VCC (1s) (3)...................................................... 6V
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
EVM3690-30B-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 produces an excessive die temperature, causing
the regulator to 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 the EVM3690-30B-BF-00A, 10cmx10cm, 4-layer
PCB.
MPM3690-30A/B Rev. 1.0
MonolithicPower.com
5/11/2021
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© 2021 MPS. All Rights Reserved.
6
MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A 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 = 30k to GND
1.5
2
mA
Individual phase current
limit, fSW = 800kHz,
VOUT = 1.2V
24
A
Individual phase current limit
-13
A
RFREQ = 30kΩ
800
kHz
50
220
ns
ns
VIN Supply Current
Quiescent supply current
IIN
Output Current Limit
Output current limit (inductor
valley)
Low-side (LS) negative current
limit
Frequency and Timer
Switching frequency
ILIM_VALLEY
ILIM_NEG
fsw
(5)
Minimum on time
tON_MIN
fSW = 800kHz, VOUT = 0.6V
Minimum off time (5)
tOFF_MIN
Output Over-Voltage Protection (OVP) and Under-Voltage Protection (UVP)
OVP threshold
VOVP
116%
UVP threshold
VUVP
70%
EN
Input high voltage
VIH_EN
2.15
Input low voltage
VIL_EN
Feedback Voltage
Feedback accuracy
594
Soft Start
Soft-start current
ISS
15
Error Amplifier (EA)
Feedback current
IFB
VFB = 0.65V
Soft Shutdown
Soft shutdown discharge FET
RON_DISCH
TJ = 25°C
Under-Voltage Lockout (UVLO)
VCC UVLO rising threshold
VCCVTH_RISING
2.6
VCC UVLO falling threshold
VCCVTH_FALLING
2.3
VCC output voltage
VCC
3.1
Power Good (PG)
PG high threshold
PGVTH_HI_RISE FB from low to high
88.5%
PGVTH_LO_RISE FB from low to high
116%
PG “ow threshold
PGVTH_LO_FALL FB from high to low
70%
PG sink current capability
VPG
IPG = 10mA
PG leakage current
IPG_LEAK
VPG = 3V, TJ = 25°C
120%
74%
124%
79%
VREF
VREF
1.20
V
V
600
606
mV
20
25
μA
50
100
nA
60
120
Ω
2.75
2.45
3.25
2.9
2.6
3.4
V
V
V
92.5% 96.5%
120% 124%
74%
78%
1.5
MPM3690-30A/B Rev. 1.0
MonolithicPower.com
5/11/2021
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© 2021 MPS. All Rights Reserved.
VREF
VREF
VREF
0.3
V
2.50
µA
7
MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
ELECTRICAL CHARACTERISTICS (continued)
VIN = 12V, TJ = -40°C to +125°C, unless otherwise noted.
Parameters
Symbol Condition
VOL_100
PG low-level output voltage
VOL_10
Thermal Protections
Thermal shutdown
threshold (5)
Thermal hysteresis
threshold (5)
VIN = 0V, pull PG up to 3.3V through a
100kΩ resistor, TJ = 25°C
VIN = 0V, pull PG up to 3.3V through a
10kΩ resistor, TJ = 25°C
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 parameters characterization.
MPM3690-30A/B Rev. 1.0
MonolithicPower.com
5/11/2021
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2021 MPS. All Rights Reserved.
8
MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
TYPICAL PERFORMANCE CHARACTERISTICS
MPM3690-30A, 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 = 12V, internal 3.3V VCC
VIN = 12V, external 3.3V VCC
EFFICIENCY (%)
100
100
EFFICIENCY (%)
95
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
95
90
85
80
VOUT=1V,FSW=500kHz
75
VOUT=1.2V,FSW=500kHz
VOUT=1.5V,FSW=600kHz
70
VOUT=1.8V,FSW=600kHz
VOUT=0.8V, FSW=400kHz
65
65
0
2
4
6
8
0
10 12 14 16 18
2
LOAD CURRENT (A)
Load Regulation
Efficiency vs. Load Current
100
VIN = 12V, one channel
VIN = 5V, internal 3.3V VCC
REGULATION (%)
EFFICIENCY (%)
95
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
VOUT=0.8V, FSW=400kHz
65
2
4
Line Regulation
One channel
0.2
REGULATION (%)
0.15
IOUT=0A
IOUT=9A
IOUT=18A
0.1
0.05
0
-0.05
-0.1
-0.15
-0.2
4
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
6 8 10 12 14 16 18
LOAD CURRENT (A)
8
12
INPUT VOLTAGE (V)
16
VOUT=1.8V,
VOUT=1.5V,
VOUT=1.2V,
VOUT=1.0V,
VOUT=0.8V,
0
CASE TEMPERATURE RISE ( C)
0
4 6 8 10 12 14 16 18
LOAD CURRENT (A)
2
4
FSW=600kHz
FSW=600kHz
FSW=500kHz
FSW=500kHz
FSW=400kHz
6 8 10 12 14 16 18
LOAD CURRENT (A)
Case Temperature Rise vs.
Load Current
VIN = 12V, IOUT1 = IOUT2
100
90
80
70
60
50
40
30
20
10
0
VOUT1=VOUT2=1.8V,
FSW=600kHz
VOUT1=VOUT2=1.2V,
FSW=500kHz
VOUT1=VOUT2=0.8V,
FSW=400kHz
0
2
4
6 8 10 12 14 16 18
LOAD CURRENT (A)
MPM3690-30A/B Rev. 1.0
MonolithicPower.com
5/11/2021
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© 2021 MPS. All Rights Reserved.
9
MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
MPM3690-30A, 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 = 18A
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 = 18A
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 = 18A
CH1: VOUT1
CH1: VOUT1
CH2: VOUT2
CH2: VOUT2
CH3: VIN
CH3: VIN
R1: IOUT1
R1: IOUT1
CH4: IOUT2
CH4: IOUT2
MPM3690-30A/B Rev. 1.0
MonolithicPower.com
5/11/2021
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2021 MPS. All Rights Reserved.
10
MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
MPM3690-30A, 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 = 18A
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 = 18A
CH1: VOUT1
CH1: VOUT1
CH2: VEN1
CH2: VEN1
CH3: VPG1
CH3: VPG1
CH4: IOUT1
CH4: IOUT1
CH1:
VOUT1/AC
CH4: IOUT1
Load Transient
Load Transient
4.5A load step, 10A/µs, COUT = 10 x 47µF,
ceramic + 220µF POSCAP, CFF = 33nF,
high ramp
9A load step, 10A/µs, COUT = 10 x 47µF,
ceramic + 220µF POSCAP, CFF = 33nF,
high ramp
CH1:
VOUT1/AC
CH4: IOUT1
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MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
MPM3690-30B, VIN = 12V, VOUT = 1.2V, COUT = 1380µF, fSW = 500kHz, FCCM, TA = 25°C, unless
otherwise noted.
Efficiency vs. Load Current
Efficiency vs. Load Current
VIN = 12V, internal 3.3V VCC
VIN = 12V, external 3.3V VCC
95
95
EFFICIENCY (%)
100
EFFICIENCY (%)
100
90
85
80
VOUT=1.8V, FSW=600KHz
75
VOUT=1.2V, FSW=500kHz
VOUT=1.5V, FSW=600kHz
VOUT=1.0V, FSW=500kHz
70
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
25
30
0
35
5
LOAD CURRENT (A)
VIN = 12V
0.2
REGULATION (%)
0.15
0.1
(%)
0.05
0
-0.05
IOUT=0A
IOUT=18A
REGULATION
-0.15
IOUT=36A
-0.2
8
12
INPUT VOLTAGE (V)
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
16
VOUT=1.8V,
VOUT=1.5V,
VOUT=1.2V,
VOUT=1.0V,
VOUT=0.8V,
0
Case Temperature Rise vs.
Load Current
VOUT=1.8V, FSW=600K
60
VOUT=1.2V, FSW=500K
VOUT=0.8V, FSW=400K
50
10 15 20 25 30
LOAD CURRENT (A)
35
VIN = 12V, 1m/s with airflow
80
70
5
FSW=600kHz
FSW=600kHz
FSW=500kHz
FSW=500kHz
FSW=400kHz
Thermal Derating
VIN = 12V
MAX LOAD CURRENT (A)
CASE TEMPERATURE RISE ( C)
4
35
Load Regulation
Line Regulation
-0.1
10 15 20 25 30
LOAD CURRENT (A)
40
30
20
10
0
40
35
30
25
20
15
VOUT=1.8V, FSW=600K
10
VOUT=1.2V, FSW=500K
5
VOUT=0.8V, FSW=400K
0
0
5
10 15 20 25 30
LOAD CURRENT (A)
35
60
70 80 90 100 110 120
AMBIENT TEMPERATURE ( C)
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MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
MPM3690-30B, 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 = 36A, 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 = 36A
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 = 36A
CH1: VOUT
CH1: VOUT
CH2: VIN
CH2: VIN
CH3: VPG
CH3: VPG
CH4: IOUT
CH4: IOUT
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MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
MPM3690-30B, 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 = 36A
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 = 36A
CH1: VOUT
CH1: VOUT
CH2: VEN
CH2: VEN
CH3: VPG
CH3: VPG
CH4: IOUT
CH4: IOUT
Load Transient
Load Transient
9A load step, 10A/µs, COUT = 20 x 47µF,
ceramic + 2 x 220µF POSCAP, CFF = 33nF,
high ramp
18A load step, 10A/µs, COUT = 20 x 47µF
ceramic + 2 x 220µF POSCAP, CFF = 33nF,
high ramp
CH1:
VOUT/AC
CH1:
VOUT/AC
CH4: IOUT
CH4: IOUT
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MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
FUNCTIONAL BLOCK DIAGRAM
VCC
0.1µF
VCC
11k
2.2
VIN
BST1
1µF
11k
TK_MST
1µF + 2 x 0.1µF
VDRV1
0.22µH
VOUT1
VIN = 4V to 16V
VOUT1 = 1.0V/18A
1µF
RAMP1
SW1
PG1
GND
VS1N
EN1
FB1 90.9k
Power
Control
MODE
60.4k
VS1P
FSET1
PMODE
PASS_MST
SS1
ILIM1
SET1
0.1µF
11k
VCC
2.2
VIN
BST2
1µF
11k
AGND
PGND
ISUM1
75k
1µF + 2 x 0.1µF
TK_SLV
VDRV2
0.22µH
VOUT2
RAMP2
SW2
PG2
GND
VOUT2 = 1.0V/18A
VS2N
EN2
FB2 90.9k
Power
Control
MODE
60.4k
VSOUT
PMODE
VS2P
FSET2
PASS_SLV
SS2
SET2
ILIM2
AGND
PGND
ISUM2
75k
Figure 1: MPM3690-30A Functional Block Diagram
MPM3690-30A/B Rev. 1.0
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MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
FUNCTIONAL BLOCK DIAGRAM (continued)
VCC
0.1µF
VCC
1µF + 2 x 0.1µF
TK_MST
2.2
VIN = 4V to 16V
VIN
BST1
1µF
11k
11k
VDRV1
0.22uH
VOUT = 1.0V/36A
VOUT1
1µF
RAMP1
SW1
PG1
GND
VS1N
FB1
EN1
Power
Control
MODE
60.4k
90.9k
VS1P
FSET1
PMODE
PASS_MST
SS1
ILIM1
SET1
0.1µF
VCC
2.2
VIN
BST2
1µF
11k
AGND
PGND
ISUM1
75k
1µF + 2 x 0.1µF
TK_SLV
VDRV2
0.22µH
RAMP2
VOUT2
SW2
PG2
GND
VS2N
EN2
FB2
Power
Control
MODE
60.4k
VSOUT
VS2P
PMODE
FSET2
PASS_SLV
SS2
SET2
ILIM2
AGND
PGND
ISUM2
75k
Figure 2: MPM3690-30B Functional Block Diagram
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MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
OPERATION
Constant-On-Time (COT) Operation
The MPM3690-30 is a dual 18A or single 36A
output power module that integrates two
inductors and two monolithic power ICs. The
MPM3690-30 utilizes a constant-on-time (COT)
control scheme to provide a fast transient
response.
Multi-Phase Operation
The
MPM3690-30B
adopts
multi-phase
constant-on-time (MCOT) control. MCOT control
configures the two ICs for master and slave
functionality. The slew rate of the supply voltage
(VIN) during start-up must be greater than 2V/ms
for MPM3690-30B.
MCOT Operation (Master)
The master phase performs the following
functions:
Generates the SET signals.
Manages start-up, shutdown, and all
protections.
Monitors for any fault alerts from the slave
phases through the PG pin.
Starts the first on pulse.
Starts 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/TAKE signal.
MCOT Operation (Slave)
The slave phase performs
functions:
the
following
Takes the SET signal from the master.
Sends over-voltage (OV), under-voltage
(UV), and over-temperature (OT) alerts to
the master through the PG pin.
Starts 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/TAKE signal.
MCOT control enables the MPM3690-30B to
respond to a load step transient much faster than
traditional current mode control schemes. When
a load step occurs, the FB signal is below the
internal reference; therefore, the SET signal is
generated more frequently than during steady
state to respond to the load transient. Depending
on the load transient step size and slew rate, the
SET signal can be generated with a minimum
50ns interval (i.e., the next phase can be turned
on as fast as 50ns after the previous phase to
provide ultra-fast load transient response).
Ramp Compensation
The MPM3690-30 provides internal ramp
compensation to support varies types of output
capacitors. The ramp value is selected with
RAMP pin. Float the RAMP pin for large ramp
compensation, or connect it to ground for small
ramp compensation. This RAMP signal is
superimposed onto the FB signal. When the
superimposed RAMP + FB signal reaches the
internal reference signal, the MPM3690-30
generates a new SET signal (which generates a
PWM on pulse). A larger ramp value reduces
system jitter, but slows load transient response.
The ramp value should be selected based on the
application and design target.
MODE Setting
The MPM3690-30 only supports forced
continuous conduction mode (FCCM) operation.
FCCM can be enabled by setting the MODE pin
to logic high.
Soft Start
The MPM3690-30A features an adjustable softstart time (tSS) for both output channels. tSS can
be programmed by connecting a soft-start
capacitor (CSS) between the SS pins and GND.
tSS can be calculated with Equation (1):
t SS (ms) = 30 CSS (μF)
(1)
Switching Frequency
The MPM3690-30A features an adjustable
switching frequency (fSW) for both output
channels. For the MPM3690-30B, the frequency
resistance (RFREQ) for both channels must be the
same.
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MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
fSW can be programmed by connecting a resistor
between the FREQ pin and GND. fSW can be
calculated with Equation (2):
fSW (MHz) =
24
RT (kΩ)
(2)
Output Voltage Discharge
When the MPM3690-30 is disabled through EN,
it enables output voltage (VOUT) discharge. Both
the high-side MOSFET (HS-FET) and the lowside MOSFET (LS-FET) are latched off. A
discharge MOSFET connected between SW and
GND turns on to discharge VOUT. The typical on
resistance of this MOSFET is about 50Ω. Once
the FB voltage (VFB) drops below 10% of the
reference voltage (VREF), then the discharge
MOSFET turns off.
Protection MODE selection
The MPM3690-30 includes a protection MODE
selection function. If the PMODE pin is pulled
high, then the MPM3690-30 enters hiccup mode
when over-current protection (OCP), overvoltage protection (OVP), or over-temperature
protection (OTP) is triggered. If PMODE is pulled
down to GND, then the MPM3690-30 latches off
when OCP, OVP, or OTP is triggered.
Inductor Valley Over-Current Protection
The MPM3690-30 features on-die current sense.
When the LS-FET is on, the switching current
(inductor current) is sensed and monitored cycle
by cycle. When VFB drops below VREF, the HSFET can only turn on whenever there is no overcurrent (OC) condition detected during the LSFET on period. So the inductor current is limited
cycle-by-cycle. If an OC condition is detected for
31 consecutive cycles, OCP is triggered. If VOUT
drops below the under-voltage protection (UVP)
threshold during an OC condition or output shortcircuit condition, the part enters OCP
immediately.
Once OCP is triggered, the MPM3690-30 either
enters hiccup mode or latches off, depending on
the PMODE pin setting. If it latches off, cycle the
power on VCC or VIN to enable the part again.
Negative Inductor Current Limit
If the LS-FET detects a negative current below
-13A, the LS-FET turns off for a set time to limit
the negative current.
The MPM3690-30 has over-temperature
protection (OTP). The IC internally monitors the
junction temperature. If the junction temperature
exceeds 160°C, the converter shuts off.
After OTP is triggered, the MPM3690-30 either
enters hiccup mode or latches off. I If it latches
off, cycle the power on VCC or VIN to enable the
part again.
Feedback Circuit
Connect a resistor between FB1 and VS1N and
another between FB2 and VS2N to set the
output voltages for the MPM3690-30A. For the
MPM3690-30B, connect a resistor between FB1
and VS1N to set VOUT, and tie FB1 to FB2.
Connect a 60.4kΩ resistor internally between
FB1 and VS1P and another between FB2 and
VS2P. Figure 3 shows the block diagram.
Reference
To PWM
FB
EA
VOUT
VS1P
RFB1
60.4k
FB1
COUT
RFB2
VS1N
Figure 3: MPM3690-30 Feedback Circuit
VOUT can be estimated with Equation (3):
VOUT VREF (1
RFB1
)
RFB2
(3)
Where VREF is the reference voltage (0.6V), and
RFB1 = 60.4kΩ.
Power Good (PG)
The MPM3690-30 has a power-good (PG)
output for each channel. The PG pin is the open
drain of a MOSFET. Connect it to VCC or an
external voltage source that is below 3.6V
through a pull-up resistor (typically 100kΩ). After
applying the input voltage (VIN), the MOSFET
turns on so that the PG pin is pulled to GND
before soft start (SS) is ready. After VFB reaches
the threshold, the PG pin is pulled high after a
delay.
Over-Temperature Protection (OTP)
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MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
When the converter encounters any fault (e.g.
UV, OV, OT, or UVLO), the PG pin is latched low.
After PG is latched low, it cannot be pulled high
again until a new SS is initialized.
If the input supply fails to power the MPM369030, PG is latched low even though it is tied to an
external DC source through a pull-up resistor.
Figure 4 shows the relationship between the PG
voltage (VPG) and the pull-up current (IPG).
2
1.8
1.6
IPG ( mA)
IPG (mA)
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0.6
0.65
0.7
0.75
0.8
0.85
0.9
VPG (V)
Figure 4: PG Current vs. PG Voltage
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MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
APPLICATION INFORMATION
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
best performance. Place the input capacitors as
close to the VIN pin as possible.
The capacitance can vary significantly with
temperature. Capacitors with X5R and X7R
ceramic dielectrics are recommended 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 (ICIN) with Equation (4):
ICIN IOUT
VOUT
V
(1 OUT )
VIN
VIN
(4)
The worst-case condition occurs at VIN = 2 x VOUT,
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 that meets any input voltage ripple
requirements.
Estimate the input voltage ripple (∆VIN) with
Equation (6):
ΔVIN =
IOUT
V
V
OUT (1- OUT )
fSW ×CIN VIN
VIN
The worst-case condition occurs at VIN = 2 x VOUT,
calculated with Equation (7):
ΔVIN =
I
1
OUT
4 fSW CIN
(7)
Output Capacitor
The output capacitor maintains the DC output
voltage. The output voltage ripple (∆VOUT) is
estimated with Equation (8):
ΔVOUT =
VOUT
V
1
(1- OUT ) (RESR +
) (8)
fSW L
VIN
8 fSW COUT
When using ceramic capacitors, the capacitance
dominates the impedance at the switching
frequency and causes the majority of the output
voltage ripple. For simplification, estimate the
output voltage ripple (∆VOUT) with Equation (9):
ΔVOUT =
VOUT
V
(1- OUT )
8 fSW L COUT
VIN
2
(9)
When using capacitors with larger ESR (e.g.
POSCAP, OSCON), the ESR dominates the
impedance at the switching frequency. The
output voltage ripple is determined by the ESR
values. For simplification, the output ripple can
be estimated with Equation (10):
ΔVOUT =
VOUT
V
(1- OUT ) RESR
fSW L
VIN
(10)
Low VIN Applications
For low VIN applications (3V < VIN < 4V), an
external VCC bias power supply needed. The
external bias VCC must be above 2.9V (the VCC
UVLO rising threshold maximum value).
(6)
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MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
parasitic impedance.(6)
PCB Layout Guidelines
Efficient PCB layout is critical for stable
operation. For the best results, refer to Figure 5
and follow the guidelines below:
VIN
1. Place sufficient decoupling capacitors as
close as possible to the VIN and GND pins.(6)
7. For the MPM3690-30B, connect all of the
VOUT copper planes.
GND
8. Connect all of the GND pins on a copper
plane.
9. Place sufficient vias close to the GND pins to
provide a current return path, which
minimizes thermal resistance and parasitic
impedance. (6)
2. Place sufficient GND vias around the GND
pad of the decoupling capacitors.(6)
3. Avoid placing sensitive signal traces close to
the input copper plane and/or vias without
sufficient ground shielding.
VSxP and VSxN
10. For the MPM3690-30A, route each pair of
VSxP/N pins as differential signals. For
MPM3690-30B, connect FB1 with FB2, and
connect all VSxN pins.
4. Use a minimum of four 22µF/25V ceramic
capacitors for input channel to provide
sufficient decoupling.
VOUTx
5. Connect each VOUTx pin together on a
copper plane.
11. Avoid routing VSxP/N traces close to the
input plane and high-speed signals.
6. Place sufficient vias near the VOUTx pads to
provide a current path that offers minimal
6) Sufficient quantity is determined based on the details of the
individual application.
Note:
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
CO2
SW2
GND
CO3
CO1
VOUT1
PG1
GND
CO4
VOUT2
Figure 5: Recommended PCB Layout
MPM3690-30A/B Rev. 1.0
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MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
TYPICAL APPLICATION CIRCUITS
10k
VIN = 4V to 16V
VIN
VCC
MODE
CIN
VS1P
FB1
EN1
EN2
EN1
EN2
VOUT1 = 1.2V/18A
VOUT1
COUT
60.4k
VS1N
MPM3690-30A
CSS1
RFB1
VOUT2 0.9V/18A
VOUT2
CSS2
VS2P
FB2
RF1
COUT
RFB2
121k
VS2N
RF2
Figure 6: Typical Application Circuit (Dual-Output Operation, 1.2V and 0.9V at 18A with Remote Sense for
Both Outputs)
10k
VIN = 4V to 16V
VIN
MODE
VCC
CIN
EN1
EN2
EN1
EN2
VOUT1 = 1.2V/18A
VOUT1
VS1P
FB1
RFB1
VS1N
60.4k
MPM3690-30A
CSS1
COUT
VOUT2 0.9V/18A
VOUT2
CSS2
COUT
VS2P
FB2
RF1
RF2
VS2N
RFB2
121k
Figure 7: Typical Application Circuit (Dual-Output Operation, 1.2V and 0.9V at 18A with Remote Sense
Disabled)
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22
MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
TYPICAL APPLICATION CIRCUITS (continued)
10k
VIN = 4V to 16V
VIN
MODE
VCC
CIN
VOUT = 1.2V/36A
VOUT1
VS1P
FB1
PG
COUT
60.4k
EN1
EN2
EN
RFB
VS1N
MPM3690-30B
VOUT2
CSS1
COUT
VS2P
FB2
RF
RF
VS2N
Figure 8: Typical Application Circuit (Interleaved Operation, 1.2V at 36A with Remote Sense)
10k
VIN = 4V to 16V
VIN
MODE
VCC
CIN
VOUT = 1.2V/36A
VOUT1
VS1P
FB1
EN1
EN2
EN
PG
COUT
RFB
VS1N
60.4k
MPM3690-30B
VOUT2
CSS1
VS2P
COUT
FB2
RF1
RF2
VS2N
Figure 9: Typical Application Circuit (Interleaved Operation, 1.2V at 36A without Remote Sense)
MPM3690-30A/B Rev. 1.0
MonolithicPower.com
5/11/2021
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2021 MPS. All Rights Reserved.
23
MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
PACKAGE INFORMATION
BGA (16mmx16mmx5.18mm)
MPM3690-30 Rev. 1.0
MonolithicPower.com
5/11/2021
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2021 MPS. All Rights Reserved.
24
MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
CARRIER INFORMATION
Pin1
1
1
ABCD
1
1
ABCD
ABCD
ABCD
Feed Direction
Part Number
Package Description
Quantity/
Reel
Quantity/
Tray
Quantity/
Tube
Reel
Diameter
Carrier
Tape
Width
Carrier
Tape
Pitch
MPM3690GBF30A
MPM3690GBF30B
BGA
(16mmx16mmx5.18mm)
N/A
90
N/A
N/A
N/A
N/A
MPM3690-50 Rev. 1.0
MonolithicPower.com
5/11/2021
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2021 MPS. All Rights Reserved.
25
MPM3690-30A/B – 16V, DUAL 18A OR SINGLE 36A POWER MODULE
REVISION HISTORY
Revision #
1.0
Revision Date
5/11/2021
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.
MPM3690-50 Rev. 1.0
MonolithicPower.com
5/11/2021
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2021 MPS. All Rights Reserved.
26
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