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Monolithic Power Systems Inc. MPC1100A-54-0000-Z
- Part No.:
- MPC1100A-54-0000-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- DC DC Converters
- Package:
- 18-SMD Module
- Datasheet:
-
MPC1100A-54-0000-Z.pdf
- Description:
- HIGH-EFFICIENCY, NON-ISOLATED, F
- Quantity:
- Payment:
- Shipping:
Inventory:4,696
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Product details
Overview
MPC1100A-54-0000 from Monolithic Power Systems is a non-isolated, fixed-ratio (10:1), digital LLC-DCX DC/DC power module delivering up to 300W at 4–6V output from a 40–60V input bus. It integrates MP2981 digital controller and dual MP8500 synchronous rectifiers, supports PMBus/I²C monitoring of voltage, current, temperature, and power, and operates with 94% peak efficiency at 54V/7.5A. It is used in high-density server power distribution rails.
For engineers reviewing the MPC1100A-54-0000 datasheet, MPC1100A-54-0000 pinout, MPC1100A-54-0000 application, or MPC1100A-54-0000 equivalent, key selection criteria include fixed-ratio operation, 60A continuous secondary current capability, programmable protections (VIN UVLO/OVP, VOUT UVP/OVP, OCP_TDC/OCP_SPIKE, OTP), MTP-configurable soft-start and frequency tuning, and surface-mount 27mm × 18mm × 6mm package compatibility with high-current PCB layouts.
Technical Context
The MPC1100A-54-0000 implements a full-bridge LLC resonant topology with integrated magnetic core and digital control loop that dynamically adjusts PWM on-time (tON) using zero-current detection (ZCD) feedback from MP8500 SRs to maintain operation at resonant frequency (813 kHz typical). Its dual-phase architecture uses two MP8500 devices per phase for accurate current sensing (5 µA/A) and ZCS, enabling zero-voltage switching (ZVS) on primary FETs and minimizing conduction and switching losses.
Real-time telemetry is enabled via PMBus/I²C interface with 62.5 mV/LSB VOUT resolution, 0.25 A/LSB IOUT resolution, and 1°C temperature resolution. Configuration is stored in multiple-time programmable (MTP) memory - supporting >100,000 write cycles - and restored at power-on or via RESTORE_USER_ALL command, allowing field re-tuning of fSW, soft-start time, and protection thresholds without hardware change.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 40 V to 60 V DC - supports standard 48 V server bus with ±10 V tolerance for transient ride-through. |
| Output Voltage Range | 4 V to 6 V - fixed 10:1 ratio from VIN; enables direct stepping down to intermediate bus voltages for CPU/GPU VRMs. |
| Max Continuous Output Current | 60 A - delivers 300 W at 5 V; designed for high-current point-of-load (POL) applications with low RLL = 3 mΩ. |
| Peak Efficiency | 94 % at 54 V / 7.5 A - achieved via resonant LLC operation and synchronous rectification, reducing thermal load in dense systems. |
| Switching Frequency | 813 kHz - digitally tuned to resonant point via ZCD feedback; minimizes EMI and magnetics size. |
| PMBus/I²C Interface | Supports 10–1000 kHz bus speeds - enables real-time telemetry and configuration updates without interrupting power delivery. |
| Protections | VIN UVLO (37 V), VIN OVP (63 V), VOUT UVP (3.0 V), VOUT OVP (7.2 V), OCP_TDC (140 A), OTP (130 °C) - latch-off mode ensures system safety during fault conditions. |
Pinout & Package
Package: Surface-mount module, 27 mm × 18 mm × 6 mm, with exposed thermal pad for PCB heat sinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PSYS | Current-source power-good indicator | Outputs proportional current for external voltage conversion; used for system-level power status signaling. |
| 2 SCL | PMBus/I²C clock line | Open-drain bidirectional clock signal; requires pull-up resistor for bus communication. |
| 3 SDA | PMBus/I²C data line | Open-drain bidirectional data signal; shares bus with other PMBus devices via ADDR pin addressing. |
| 5 ADDR | I²C address LSB selector | Analog voltage input sets lower 4 bits of 7-bit PMBus address; enables multi-module bus sharing. |
| 7 VIN | Main power input | High-current primary-side rail connection (40–60 V); routed with wide copper for <60 A continuous flow. |
| 8 5V | Auxiliary supply for primary driver | Provides 5 V bias to primary-side gate drivers; requires 1 µF local decoupling. |
| 10 3.3V | Auxiliary supply for controller/SR | Supplies MP2981 and MP8500 logic; requires 4.7 µF local decoupling for stable digital operation. |
| 11 EN | Enable control input | Active-high logic input (VIH = 0.8 V); initiates soft-start sequence when pulled high after power stabilization. |
| 12 PG | Power-good open-drain output | Signals valid output regulation; sinks current when VOUT is within 4–6 V window and no faults are active. |
| 13,15,17 VOUT | Secondary-side power output | Three parallel high-current output terminals reduce impedance and thermal stress under 60 A load. |
| 4,6,9,14,16,18 GND | Power ground return | Six dedicated ground pins minimize ground bounce and ensure low-impedance return path for both primary and secondary sides. |
Key Features
| Feature | Design Value |
|---|---|
| Digital resonant frequency tracking | Uses ZCD feedback from MP8500 to dynamically adjust tON and lock operation at resonant frequency (813 kHz), improving efficiency across load and temperature. |
| Configurable MTP memory | Stores soft-start time, switching frequency, and protection thresholds; supports >100,000 reprogramming cycles for field calibration and design iteration. |
| Multi-level over-current protection | Combines TDC-based latched shutdown (140 A) and spike-mode response (90 A pulse) with independent recovery timing (12.7 ms delay). |
| Real-time telemetry resolution | Delivers 0.25 A/LSB output current and 62.5 mV/LSB output voltage readings via PMBus, enabling precise load-line and margining control. |
| Thermal-aware protection coordination | Monitors both MP2981 die temperature and MP8500 junction temperature independently; triggers latch-off if either exceeds 130 °C with 30 °C hysteresis. |
Applications
| Datacenter Server Intermediate Bus | AI Accelerator Power Rail |
|---|---|
Use Scenario: Supplies regulated 4.5 V intermediate bus to multiple GPU VRMs in 4U rack servers with strict thermal envelope constraints. IC Role / Device Role / Timing Role: Fixed-ratio DCX module acting as isolated bus converter replacement; provides low-noise, high-efficiency stepping from 48 V backplane to sub-5 V POL inputs. Use Value: Eliminates need for separate isolation stage while maintaining 94% efficiency at 50 A, reducing board area by 35% vs. discrete LLC + SR solution. | Use Scenario: Powers high-current memory subsystems (HBM2E stacks) requiring fast transient response and tight voltage regulation (<±10 mV). IC Role / Device Role / Timing Role: Digital power module providing programmable soft-start and real-time current telemetry to FPGA-based power management ICs. Use Value: Enables dynamic current limiting and adaptive margining via PMBus commands, improving reliability during AI training workloads with bursty current profiles. |
| Telecom Baseband Unit (BBU) | Industrial Edge Computing Node |
Use Scenario: Delivers 300 W to 5G baseband processing units operating in -40°C to +85°C ambient with forced-air cooling. IC Role / Device Role / Timing Role: Non-isolated power card handling wide-input 40–60 V range from telecom rectifier; monitors input/output parameters for predictive maintenance. Use Value: Built-in VIN UVLO (37 V) and OTP (130 °C) prevent brownout-induced crashes and thermal runaway in unattended deployments. | Use Scenario: Powers fanless edge AI inference modules in factory automation cabinets where silent operation and long-term reliability are critical. IC Role / Device Role / Timing Role: Fixed-ratio module replacing traditional buck converters; leverages MTP to store custom startup sequences for cold-boot resilience. Use Value: 12.7 ms protection recovery delay prevents nuisance tripping during motor startup surges, increasing system uptime by >99.95%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-ratio digital DC/DC module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPC1100C-54-0002 | Successor revision with updated MP2981 firmware, improved OTP accuracy (±2°C vs. ±5°C), and enhanced ZCD loop stability under light load. | Same pinout and electrical specs; optimized for new designs requiring extended lifetime and tighter thermal margins. | Select for new designs - offers full backward compatibility and extended product lifecycle support. |
| MPM3695-100 | Integrated 100 A buck module (not fixed-ratio); uses different control architecture (COT vs. digital LLC), lacks PMBus telemetry, and has lower peak efficiency (92% @ 12 V). | Used in lower-power applications (<150 W) where isolation is not required and telemetry is handled externally. | Choose only if fixed-ratio operation is unnecessary and cost-sensitive, low-complexity integration is prioritized over telemetry and efficiency. |
Compared with MPC1100C-54-0002, the MPC1100A-54-0000 lacks updated ZCD light-load behavior and has wider OTP tolerance; versus MPM3695-100, it trades off integration simplicity for superior efficiency, telemetry depth, and fixed-ratio scalability in high-power server rails.
Availability
MPC1100A-54-0000 is available at Aetrix Electronics and suitable for datacenter server intermediate bus, AI accelerator power rail, and telecom baseband unit applications requiring stable component supply and long-term obsolescence planning.
Supply support for MPC1100A-54-0000 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-performance power management ICs and modules, with design centers in the US, China, and Taiwan.
The MPC1100A series belongs to MPS's digital power module product line, engineered specifically for high-efficiency, high-current, fixed-ratio DC/DC conversion in next-generation datacenter and AI infrastructure where telemetry, configurability, and thermal density are critical.
FAQ
Is MPC1100A-54-0000 recommended for new designs?
No - MPS explicitly labels this part "NOT RECOMMENDED FOR NEW DESIGNS" and directs users to MPC1100C-54-0002. The C-series revision includes firmware enhancements for ZCD loop stability, tighter OTP tolerance, and extended lifetime support, making it the only viable option for new product introductions.
What is the function of the PSYS pin?
PSYS is a current-source output (not voltage) that sinks current proportional to output power. When a resistor (e.g., 20 kΩ) is connected from PSYS to GND, it generates a voltage (e.g., 0.634 V at 47 A) usable as an analog power-good or load-monitoring signal for system supervisors.
How does the ADDR pin configure the PMBus address?
The ADDR pin sets the 4 LSBs of the 7-bit PMBus address via analog voltage level (0–1.55 V). With top 3 bits fixed to '010', ADDR voltage selects one of 16 addresses (20h–2Fh) using an external resistor divider from VDD18; no external pull-up/down is needed.
Can MPC1100A-54-0000 operate without the 3.3V and 5V auxiliary supplies?
No - both 3.3V (for MP2981 controller and MP8500 logic) and 5V (for primary-side gate drivers) are mandatory. Omitting either causes functional failure: missing 3.3V disables digital control and telemetry; missing 5V prevents primary FET drive, halting power conversion.
What protection mechanisms trigger immediate latch-off?
VIN UVLO (≤37 V), VIN OVP (≥63 V), VOUT UVP (≤3.0 V), VOUT OVP (≥7.2 V), OCP_TDC (≥140 A), and OTP (≥130 °C) all cause immediate latch-off. OCP_SPIKE (90 A pulse) and communication faults result in hiccup mode or error flagging but do not latch unless sustained.
Does MPC1100A-54-0000 support PMBus packet error checking (PEC)?
Yes - the device supports PEC for both read and write transactions. Figure 11 in the datasheet shows the full PEC-enabled transmission structure, and register 68h bit[7] enables/disables PEC globally. Enabling PEC improves data integrity in electrically noisy server environments.
What is the minimum recommended soft-start time?
The soft-start time is configurable via MTP register but defaults to ~1 ms (tA = 0.8–1 ms from EN high to VOUT reaching 10%). This value is optimized to limit inrush current while avoiding excessive start-up delay; values below 0.5 ms risk violating OCP_TDC during ramp-up.
MPC1100A-54-0000-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 18-SMD Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 40V
- Voltage - Input (Max):
- 60V
- Voltage - Output 1:
- 4 ~ 6V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 60A
- Power (Watts):
- 360 W
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- Adjustable Output, I2C Interface, PMBus™, Remote On/Off, Remote Sense
- Operating Temperature:
- -40°C ~ 125°C
- Efficiency:
- 94%
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MPC1100A-54-0000-Z FAQ
1.How can I place an order for MPC1100A-54-0000-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPC1100A-54-0000-Z 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 MPC1100A-54-0000-Z reliable?
The price and inventory of MPC1100A-54-0000-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPC1100A-54-0000-Z is usually 5 days.
3.What payment methods are accepted for MPC1100A-54-0000-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPC1100A-54-0000-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPC1100A-54-0000-Z?
MPC1100A-54-0000-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPC1100A-54-0000-Z 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 MPC1100A-54-0000-Z?
For technical support, including MPC1100A-54-0000-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPC1100A-54-0000-Z requirements.
6.How does Aetrix verify that MPC1100A-54-0000-Z is sourced from the original manufacturer or authorized distributors?
All MPC1100A-54-0000-Z 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 MPC1100A-54-0000-Z meets industry standards.
7.What is the process for return or replacement of MPC1100A-54-0000-Z?
All MPC1100A-54-0000-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPC1100A-54-0000-Z, 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 MPC1100A-54-0000-Z part is unused and in its original packaging.
Return procedure for MPC1100A-54-0000-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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