The EVQ8785-MJ-1PHASE-01A is an evaluation board designed to demonstrate the capabilities of the MPQ8785, a fully integrated, PMBus-compatible, high-frequency, synchronous buck converter. The MPQ8785 offers a very compact solution that achieves up to 40A of output current (IOUT) per phase, with excellent load and line regulation across a wide input supply voltage (VIN) range. The MPQ8785 achieves high efficiency across a wide IOUT load range. The PMBus interface provides the converter configurations and monitors key parameters.
The device adopts MPS’s proprietary, digital, multi-phase constant-on-time (MCOT) control to provide fast transient response and ease loop stabilization. The MCOT scheme also allows multiple MPQ8785 devices to be connected in parallel, with excellent current-sharing and phase interleaving for high-current applications.
Fully integrated protection features include over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), and over-temperature protection (OTP).
The MPQ8785 requires a minimal number of readily available, standard external components, and is available in a TLGA-37 (5mmx6mm) package.
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3.1V to 16V Input Voltage (VIN) with External 3.3V VCC Bias
40A of Continuous Output Current (IOUT)
Phase Redundancy to Ensure Uninterrupted Operation
Lossless and Accurate On-Die Current-Sensing with Auto-Matching
Accurate Current Balance Control in Multi-Phase Operation
Quiet SwitcherTM Technology (QSTTM) to Mitigate Switching Noise
Fault Recording (BBOX) to Ease Failure Analysis
Automatic PMBus Address Assignment to Provide Auxiliary Phase Data Reading
Adaptive Multi-Phase Constant-On-Time (MCOT) Control for Ultra-Fast Transient Response
Stable with Zero-ESR Output Capacitors
0.5% Reference Voltage (VREF) across 0°C to 85°C Junction Temperature (TJ) Range
1% VREF across -40°C to +125°C TJ Range
Output Voltage (VOUT) Adjustable from 0.35V to 0.9 x VIN, Up to 5.5V Max
VOUT, IOUT, VIN, and TJ Reporting
Built-In Multiple-Time Programmable (MTP) Memory to Store Custom Configurations with Cyclic Redundancy Check (CRC)/Check Sum
Configurable via the PMBus:
VOUT
IOUT Limit
Soft-Start Time
Selectable 300kHz Up to 2MHz Switching Frequency (fSW)
Over-Current Protection (OCP), Over-Voltage Protection (OVP), Under-Voltage Protection (UVP), and Over-Temperature Protection (OTP) with Options for Hiccup or Latch-Off Mode
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