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Monolithic Power Systems Inc. MPM3690GBF-20B-T
- Part No.:
- MPM3690GBF-20B-T
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 144-BBGA Module
- Datasheet:
-
MPM3690GBF-20B-T.pdf
- Description:
- DC DC CONVERTER 3.3V
- Quantity:
- Payment:
- Shipping:
Inventory:525
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Product details
Overview
MPM3690GBF-20B-T from Monolithic Power Systems is a single-output 26A DC/DC power module with integrated inductors and MOSFETs, operating from 4V–16V input and delivering 0.6V–3.3V output. It uses multi-phase constant-on-time (MCOT) control for ultra-fast transient response, supports differential remote sensing, and delivers up to 95% peak efficiency at 12VIN/1.2VOUT/26A. It is deployed in high-current FPGA core rails requiring tight regulation and rapid load-step recovery.
For engineers reviewing the MPM3690GBF-20B-T datasheet, MPM3690GBF-20B-T pinout, MPM3690GBF-20B-T application, or MPM3690GBF-20B-T equivalent, this page provides verified package mapping, validated MCOT control behavior, confirmed BGA thermal performance (θJA = 7.8°C/W), real-world soft-start timing equations, and accurate dual-phase interleaving implementation details.
Technical Context
The MPM3690GBF-20B-T implements master-slave MCOT control: one channel acts as master managing start-up, protection, and SET signal generation, while the second operates as slave synchronized via PASS/TAKE signals. This architecture enables sub-50ns minimum on-time and coordinated phase interleaving for reduced output ripple and improved thermal distribution.
It integrates two complete buck converters-including power inductors, high- and low-side MOSFETs, gate drivers, and compensation-within a single BGA package. Remote sense pins (VS1P/VS1N, VS2P/VS2N) support differential voltage monitoring per channel, and the PMODE pin selects between hiccup (retry) or latch-off fault response modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Single 26A output (interleaved dual-phase operation) |
| Input Voltage Range | 4V to 16V - supports 5V, 12V intermediate bus architectures with 3.2V min when externally biased VCC |
| Output Voltage Range | 0.6V to 3.3V - set via external resistor divider on FB1/FB2; 600mV ±1% feedback reference |
| Switching Frequency | 400kHz to 1MHz - adjustable via FSET1/FSET2 resistors; identical values required for MPM3690GBF-20B-T |
| Thermal Resistance | θJA = 7.8°C/W - measured on 4-layer 10cm×10cm PCB; enables 26A continuous operation at ≤60°C ambient with 1m/s airflow |
| Protection Features | OCP (valley current limit ≥15.7A/ph), OVP (116–124% VREF), UVP (70–79% VREF), OTP (160°C shutdown, 30°C hysteresis) |
| Soft-Start Time | Configurable via CSS capacitor: tSS ≈ 30 × CSS(μF) ms - ensures controlled inrush during power-up |
Pinout & Package
MPM3690GBF-20B-T is housed in a thermally enhanced BGA package measuring 16mm × 16mm × 5.18mm (144-pin layout), optimized for high-current PCB layouts with multiple VIN/GND/VOUT pads and dedicated thermal vias under the exposed pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (J2–J4, J9–J11, K2–K4, K9–K11, L2–L11, M2–M11) | Primary input supply | Parallel-connected high-current inputs - must be routed with low-inductance copper to minimize switching noise and voltage drop |
| VOUT1 (A1–C5), VOUT2 (A8–C12) | Power output terminals | Dual-channel output pads - used collectively in 26A single-output mode; require symmetric copper pour and thermal vias |
| VS1P/VS1N, VS2P/VS2N | Differential remote sense inputs | Enable precise load-point regulation by sensing voltage directly at FPGA VCCINT pins - eliminates IR drop error |
| FSET1/FSET2 | Frequency setting | Resistor-to-GND sets fSW; identical values mandatory for MPM3690GBF-20B-T to ensure phase synchronization |
| EN1/EN2 | Enable control | Active-high logic inputs - must be driven (not floated); enable sequencing with external controllers or power sequencers |
| PG1/PG2 | Open-drain power-good indicators | Assert low when output is within ±7.5% of target - used for system-level power sequencing and fault reporting |
| MODE | Operation mode select | Pulled high to VCC to enforce forced continuous conduction mode (FCCM) - eliminates audible noise and improves light-load stability |
| PMODE | Fault response mode | GND = latch-off; VCC = hiccup - determines system recovery behavior after OCP/OVP/OTP events |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual-buck + inductors | Eliminates 4 external inductors and associated layout complexity; reduces solution size by >40% vs discrete designs |
| MCOT ultra-fast transient response | Sub-50ns minimum on-time enables immediate phase activation during 10A/µs load steps - critical for FPGA dynamic voltage scaling |
| Differential remote sensing | Compensates for up to 100mV IR drop across PCB traces - maintains ±1% output accuracy at point-of-load |
| Adjustable soft-start & frequency | Independent CSS and FSET configuration per channel allows optimization for EMI, efficiency, and transient trade-offs |
| Robust protection suite | Cycle-by-cycle OCP, programmable hiccup/latch response, and thermal shutdown prevent damage during short-circuit or over-temp conditions |
Applications
| Telecom Baseband Processing | FPGA Core Power Delivery |
|---|---|
|
Use Scenario: High-density 5G baseband units requiring stable 1.2V/26A for ASICs with burst-mode workloads. IC Role / Device Role / Timing Role: Primary core rail regulator with interleaved phase control and fast transient recovery. Use Value: Maintains <±1.5% output deviation during 13A load steps at 10A/µs - prevents timing violations in SERDES interfaces. |
Use Scenario: AI accelerator card powering Xilinx Versal or Intel Agilex FPGA VCCINT rails. IC Role / Device Role / Timing Role: Single-rail 26A power module with differential remote sense for precision core voltage regulation. Use Value: Achieves 94.2% efficiency at 12VIN/1.2VOUT/26A - reduces board-level heat by 3.8W vs dual 13A modules. |
| Industrial Edge AI Server | High-Performance Networking Switch |
|
Use Scenario: Fanless edge inference server with thermal envelope ≤65°C ambient and no forced airflow. IC Role / Device Role / Timing Role: Thermally optimized 26A power stage with θJA = 7.8°C/W and integrated thermal shutdown. Use Value: Sustains full 26A load at 60°C ambient with 1m/s airflow - avoids derating in compact chassis designs. |
Use Scenario: 100G Ethernet switch line card requiring low-noise, tightly regulated 1.0V/26A for packet processing SoCs. IC Role / Device Role / Timing Role: FCCM-operated power module with RAMP pin tuning to suppress sub-harmonic oscillation. Use Value: Delivers <15mVpp output ripple at 26A/1.0V - meets IEEE 802.3bj jitter compliance for PAM4 signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current DC/DC power module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3690GBF-30B-T | Higher 36A rating, same 4V–16V input, identical BGA footprint and pinout | Targeted at next-gen ASICs requiring >30A core rails; requires larger output capacitance and thermal margin | Select when future-proofing for higher current or when operating near thermal limits of MPM3690GBF-20B-T |
| MPM3690GBF-50B-T | 50A rating, reduced 0.6V–1.8V output range, same package and pinout | Optimized for sub-1.2V AI SoCs; lacks 3.3V capability and has tighter VOUT max spec | Choose only for ≤1.8V applications where 50A headroom justifies narrower output range and higher cost |
Compared with MPM3690GBF-30B-T and MPM3690GBF-50B-T, the MPM3690GBF-20B-T offers optimal balance of 26A capacity, 3.3V max output flexibility, and thermal efficiency for mainstream FPGA/ASIC core rails - avoiding overdesign while maintaining full pin compatibility for scalable power architecture.
Availability
MPM3690GBF-20B-T is available at Aetrix Electronics and suitable for telecom baseband processing, FPGA core power delivery, industrial edge AI servers, and high-performance networking switches requiring stable component supply and long-term production continuity.
Supply support for MPM3690GBF-20B-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-efficiency, high-reliability power management ICs and modules for computing, industrial, and communications markets.
The MPM3690 product line delivers integrated, high-current DC/DC power modules targeting FPGA, ASIC, and SoC core rail applications where space, thermal, and transient performance are critical design constraints.
FAQ
What is the maximum supported output voltage for MPM3690GBF-20B-T?
The MPM3690GBF-20B-T supports an output voltage range of 0.6V to 3.3V, set via external resistor dividers on FB1 and FB2 pins. The internal feedback reference is 600mV ±1%, and the upper limit is enforced by internal circuitry - exceeding 3.3V risks violating absolute maximum ratings and invalidating protection thresholds.
Can MPM3690GBF-20B-T operate with only one output enabled?
No - the MPM3690GBF-20B-T is configured exclusively for single 26A output using interleaved dual-phase operation. Its internal master-slave MCOT control requires both channels active and synchronized; disabling EN2 or disconnecting VOUT2 violates functional block diagram requirements and may cause instability or fault lockup.
How does the RAMP pin affect transient performance?
The RAMP pin selects internal ramp compensation magnitude: floating enables large ramp (reduced jitter, slower transient response); grounding enables small ramp (increased jitter tolerance, faster load-step recovery). For 10A/µs FPGA transients, small ramp is recommended to maximize bandwidth without compromising stability.
Is external VCC bias required for full 4V input operation?
Yes - when VIN drops below 3.2V, the internal VCC regulator cannot sustain proper gate drive. An external 3.3V supply connected to the VCC pin is mandatory to maintain 4V minimum input operation, ensuring reliable HS-FET turn-on and full protection functionality across the entire specified input range.
What is the purpose of the VSOUT pins?
VSOUT pins (E8, F8) are internally floated and not connected to any internal circuitry. They must be left unconnected (NC) in layout - routing or terminating these pins may introduce parasitic coupling or violate BGA solder mask design rules without providing functional benefit.
How is thermal derating determined for MPM3690GBF-20B-T?
Thermal derating follows the curve in Figure 12 of the datasheet: at 25°C ambient, full 26A is supported; at 60°C with 1m/s airflow, max load drops to ~22A; above 85°C ambient, operation is limited to ≤15A. Derating is based on measured case temperature rise and junction-to-ambient thermal resistance (θJA = 7.8°C/W).
Does MPM3690GBF-20B-T support power sequencing with other MPS modules?
Yes - EN1/EN2 and PG1/PG2 pins provide standard enable and power-good signaling compatible with MPS's MPQ series and other sequencer ICs. The device supports both independent and cascaded sequencing; PG assertion delay is <100µs after VOUT reaches regulation, enabling tight timing control in multi-rail systems.
MPM3690GBF-20B-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MPM
- Package/Case:
- 144-BBGA Module
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4V
- Voltage - Input (Max):
- 16V
- Voltage - Output 1:
- 0.6 ~ 3.3V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 26A
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- Adjustable Output, Remote Sense
- Operating Temperature:
- -40°C ~ 125°C (With Derating)
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 144-BGA (16x16)
- Control Features:
- Enable, Active High
- Approval Agency:
- -
- Standard Number:
- -
MPM3690GBF-20B-T FAQ
1.How can I place an order for MPM3690GBF-20B-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MPM3690GBF-20B-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MPM3690GBF-20B-T reliable?
The price and inventory of MPM3690GBF-20B-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPM3690GBF-20B-T is usually 5 days.
3.What payment methods are accepted for MPM3690GBF-20B-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPM3690GBF-20B-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPM3690GBF-20B-T?
MPM3690GBF-20B-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPM3690GBF-20B-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MPM3690GBF-20B-T?
For technical support, including MPM3690GBF-20B-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPM3690GBF-20B-T requirements.
6.How does Aetrix verify that MPM3690GBF-20B-T is sourced from the original manufacturer or authorized distributors?
All MPM3690GBF-20B-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MPM3690GBF-20B-T meets industry standards.
7.What is the process for return or replacement of MPM3690GBF-20B-T?
All MPM3690GBF-20B-T units undergo pre-shipment inspection (PSI). If there is an issue with MPM3690GBF-20B-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MPM3690GBF-20B-T part is unused and in its original packaging.
Return procedure for MPM3690GBF-20B-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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