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Monolithic Power Systems Inc. MPM3690GBF-50A-T
- Part No.:
- MPM3690GBF-50A-T
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 144-BBGA Module
- Datasheet:
-
MPM3690GBF-50A-T.pdf
- Description:
- DC DC CONVERTER 2X1.8V
- Quantity:
- Payment:
- Shipping:
Inventory:137
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Product details
Overview
MPM3690GBF-50A-T from Monolithic Power Systems is a dual-output 25A per channel DC/DC power module integrating monolithic converters, power inductors, and passive components in a single BGA package. It operates from 4V–16V input, delivers 0.6V–1.8V output per channel with ±1% feedback accuracy, and uses multi-phase constant-on-time (MCOT) control for ultra-fast transient response in high-density FPGA and ASIC power rails.
For engineers reviewing the MPM3690GBF-50A-T datasheet, MPM3690GBF-50A-T pinout, MPM3690GBF-50A-T application, or MPM3690GBF-50A-T equivalent, this page provides verified technical context, validated pin functions, confirmed dual-channel 25A operation mode, differential remote sense capability, and real-world thermal derating data at 125°C junction temperature.
Technical Context
The MPM3690GBF-50A-T implements interleaved dual-phase MCOT control with master/slave synchronization, enabling independent voltage setting per channel via FB1/FB2 resistive dividers and supporting forced continuous conduction mode (FCCM) only. Its RAMP1/RAMP2 pins configure internal slope compensation to stabilize output with ceramic or polymer capacitors.
It integrates two complete buck converter stages-including high-side/low-side MOSFETs, drivers, current sensing, and thermal shutdown-with dedicated EN1/EN2, PG1/PG2, and VS1P/VS2P–VS1N/VS2N remote sense terminals. Protection includes cycle-by-cycle valley-current limiting (24A typical), hiccup/latch-off OCP via PMODE, and 160°C OTP with 30°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 16V - supports standard 5V, 12V intermediate bus rails; extends to 3.2V with external 3.3V VCC bias. |
| Output Voltage Range | 0.6V to 1.8V per channel - set independently via FB1/FB2 resistive dividers with 600mV reference. |
| Output Current Rating | Dual 25A - each channel delivers up to 25A continuously with thermal derating above 70°C ambient (1 m/s airflow). |
| Switching Frequency | 400kHz to 1MHz - adjustable per channel via FSET1/FSET2 resistors; requires matched values in single-output mode. |
| Feedback Accuracy | ±1% (594–606mV) - ensures tight regulation across -40°C to +125°C junction temperature range. |
| Thermal Shutdown Threshold | 160°C with 30°C hysteresis - protects silicon during sustained overload or poor PCB heatsinking. |
| Remote Sense Support | Differential per channel (VS1P/VS1N, VS2P/VS2N) - compensates for PCB IR drop up to 20mV per channel. |
Pinout & Package
BGA package: 16mm × 16mm × 5.18mm, 144-pad grid (12×12), MSL Level 3, RoHS-compliant, lead-free and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT1 (A1–A5, B1–B5, C1–C4) | Channel 1 power output | Parallel high-current output pads carrying up to 25A; require low-impedance copper pour and thermal vias. |
| VOUT2 (A8–A12, B8–B12, C9–C12) | Channel 2 power output | Independent 25A output path; electrically isolated from VOUT1 but shares GND return plane. |
| GND (multiple pads) | Power ground | Primary thermal and current return path; must connect to solid internal ground plane with ≥12 thermal vias. |
| FB1 / FB2 | Feedback input | Connects to resistor divider from VOUTx to VSxN; sets output voltage with 600mV reference and ±1% tolerance. |
| VS1P/VS1N, VS2P/VS2N | Differential remote sense | VSxP connects to load-side VOUTx; VSxN connects to load-side GND - enables <20mV regulation error over PCB traces. |
| EN1 / EN2 | Enable control | Active-high logic inputs; must be pulled high (>2.15V) to enable respective channel; floating not allowed. |
| PG1 / PG2 | Power good indicator | Open-drain outputs asserting high when VOUTx is within 92.5–96.5% of target; require external pull-up. |
| FSET1 / FSET2 | Frequency set | Resistor-to-GND sets fSW: 30kΩ = 800kHz; supports 400kHz–1MHz tuning per channel (matched for MPM3690-50B). |
Key Features
| Feature | Design Value |
|---|---|
| Dual 25A independent outputs | Enables split-rail power delivery for multi-voltage FPGA cores (e.g., VCCINT + VCCAUX) without external phase management. |
| Multi-phase COT control | Reduces output capacitance requirement by >30% vs. voltage-mode controllers and achieves <50ns inter-phase timing for sub-μs transient recovery. |
| Differential remote sensing (per channel) | Compensates for up to 20mV IR drop across 2oz copper traces, maintaining ±1% regulation at point-of-load under full 25A load. |
| Adjustable soft-start (SS1/SS2) | Capacitor-set delay (tSS ≈ 30 × CSS in μF) prevents inrush current spikes during power-up of sensitive ASICs. |
| Configurable protection mode (PMODE) | Selects hiccup (PMODE = VCC) or latch-off (PMODE = GND) response to OCP/OVP/OTP - critical for system-level fault containment. |
Applications
| Telecom Baseband Processing | FPGA Core & Auxiliary Rails |
|---|---|
|
Use Scenario: Powering dual-voltage domains in 5G massive MIMO baseband units with tight thermal constraints and rapid load transients. IC Role / Device Role / Timing Role: Dual-channel regulator delivering 1.0V/25A to FPGA fabric and 1.8V/25A to I/O banks simultaneously. Use Value: Interleaved MCOT control limits input ripple current by 40%, reducing bulk capacitor count and board area by 25% vs. discrete solutions. |
Use Scenario: Supplying Xilinx Versal ACAP core (VCCINT) and memory interface (VCCO) from shared 12V intermediate bus. IC Role / Device Role / Timing Role: Single-package dual-buck controller with independent FB/SS/FSET per rail and synchronized soft-start sequencing. Use Value: Differential remote sense maintains ±10mV regulation at FPGA ball grid under 10A/μs load steps, eliminating need for local LDO post-regulation. |
| Industrial PLC CPU Modules | AI Accelerator Card Power |
|
Use Scenario: High-reliability 24/7 operation in programmable logic controller CPU modules requiring >10-year field life and wide-temp support. IC Role / Device Role / Timing Role: Primary 1.2V/25A core supply with integrated thermal shutdown (160°C) and latch-off OCP for fail-safe behavior. Use Value: BGA package with 5.18mm height fits under standard 1U heatsinks; MSL3 rating ensures robust reflow compatibility in industrial assembly lines. |
Use Scenario: Dense GPU/AI accelerator cards with dual compute clusters demanding independent, fast-response power domains. IC Role / Device Role / Timing Role: Dual 25A channels powering separate tensor processing units (TPUs), each with dedicated PG monitoring and remote sense. Use Value: Ultra-fast transient response (<500ns recovery from 12.5A step) prevents voltage droop-induced inference errors during burst workloads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output high-current DC/DC power module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3690GBF-30A-T | Dual 18A output; identical 4V–16V input and 0.6V–1.8V output range; same BGA footprint and pinout. | Lower current capacity suits mid-tier FPGAs (e.g., Xilinx Kintex-7) or dual-core ARM SoCs where 25A margin is unnecessary. | Select when thermal budget or cost sensitivity outweighs need for 25A headroom; drop-in replacement with no layout change. |
| MPM3690GBF-50B-T | Single 50A output; shares all control pins and thermal specs but configures both phases in parallel instead of independent channels. | Used for monolithic high-current rails (e.g., AI chip VDD), lacking independent voltage programming or channel disable capability. | Choose only for single-rail >30A applications; incompatible with dual-voltage designs due to merged FB/EN/PG functionality. |
Compared with MPM3690GBF-30A-T, the MPM3690GBF-50A-T delivers +39% per-channel current with identical footprint and control interface; versus MPM3690GBF-50B-T, it trades single-rail scalability for true dual-rail flexibility and independent sequencing - essential for heterogeneous SoC power architecture.
Availability
MPM3690GBF-50A-T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and high-performance computing applications requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for MPM3690GBF-50A-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 industrial, computing, and communications markets.
The MPM3690 product line delivers integrated power modules targeting space-constrained, high-current applications such as FPGA, ASIC, and AI accelerator power delivery - emphasizing thermal performance, fast transient response, and design simplicity.
FAQ
What is the maximum supported output capacitance for MPM3690GBF-50A-T?
The device supports up to 1380µF total output capacitance per channel, validated with 20 × 47µF ceramic + 2 × 220µF POSCAP configurations. Exceeding this value may destabilize MCOT control loop dynamics and increase startup time beyond specification.
Can MPM3690GBF-50A-T operate with only one channel enabled?
Yes - EN2 can be held low while EN1 remains high, allowing single-channel 25A operation. The disabled channel's VOUT2 pins remain at GND potential, and its PG2 output stays low; no additional external circuitry is required.
How does the RAMP pin affect stability with different capacitor types?
Connecting RAMPx to GND selects low internal ramp compensation, optimal for low-ESR ceramic capacitors; floating RAMPx enables high ramp, recommended for higher-ESR polymer or tantalum outputs to suppress subharmonic oscillation.
Is external VCC bias required for full input voltage range operation?
No - the module operates from 4V–16V using internal VCC generation. External 3.3V VCC bias extends minimum input to 3.2V and improves light-load efficiency by ~2% at 12V input/1.2V output.
What is the minimum recommended PCB copper weight for thermal management?
A minimum of 2oz (70μm) copper on inner layers is required for GND and VIN planes, with ≥12 thermal vias (0.3mm diameter, 0.6mm pitch) under the module's thermal pad to achieve 7.8°C/W θJA on a 4-layer 10cm×10cm board.
Does MPM3690GBF-50A-T support output voltage tracking during startup?
No - independent soft-start timers (SS1/SS2) allow staggered ramp-up but no analog tracking. For synchronized rise, tie SS1 and SS2 together with a single capacitor and ensure matched FB divider ratios.
What failure modes trigger latch-off versus hiccup response?
Latch-off occurs when PMODE is grounded during OCP, OVP, or OTP events; hiccup mode activates when PMODE is pulled to VCC. Both responses are hardware-enforced and independent of firmware or external logic.
MPM3690GBF-50A-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:
- 2
- Voltage - Input (Min):
- 4V
- Voltage - Input (Max):
- 16V
- Voltage - Output 1:
- 0.6 ~ 1.8V
- Voltage - Output 2:
- 0.6 ~ 1.8V
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 25A, 25A
- 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-50A-T FAQ
1.How can I place an order for MPM3690GBF-50A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MPM3690GBF-50A-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-50A-T reliable?
The price and inventory of MPM3690GBF-50A-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-50A-T is usually 5 days.
3.What payment methods are accepted for MPM3690GBF-50A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPM3690GBF-50A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPM3690GBF-50A-T?
MPM3690GBF-50A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPM3690GBF-50A-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-50A-T?
For technical support, including MPM3690GBF-50A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPM3690GBF-50A-T requirements.
6.How does Aetrix verify that MPM3690GBF-50A-T is sourced from the original manufacturer or authorized distributors?
All MPM3690GBF-50A-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-50A-T meets industry standards.
7.What is the process for return or replacement of MPM3690GBF-50A-T?
All MPM3690GBF-50A-T units undergo pre-shipment inspection (PSI). If there is an issue with MPM3690GBF-50A-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-50A-T part is unused and in its original packaging.
Return procedure for MPM3690GBF-50A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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