Monolithic Power Systems Inc. MPQ4272GVE-0001-AEC1-P

Overview

MPQ4272GVE-0001-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 dual-channel synchronous buck converter IC for automotive USB Type-C power delivery, integrating two 3A monolithic DC/DC regulators with I²C/PMBus interface, 4V–36V input range, 1V–21V programmable output range (12.6mV resolution), and on-chip 22mΩ/26mΩ MOSFETs. It supports USB PD 3.0 in dual-port charger designs with VBUS isolation gate drivers and battery short-to-ground protection.

For engineers reviewing the MPQ4272GVE-0001-AEC1-P datasheet, MPQ4272GVE-0001-AEC1-P pinout, MPQ4272GVE-0001-AEC1-P application, or MPQ4272GVE-0001-AEC1-P equivalent, this device delivers configurable dual 3A outputs via I²C, real-time current limit adjustment (50mA/step), selectable switching frequencies (250kHz–2.1MHz), and automotive-grade fault protections including OVP, thermal shutdown, and load-shedding alert - critical for USB-C automotive charging modules and infotainment power rails.

Technical Context

The MPQ4272GVE-0001-AEC1-P implements peak-current-mode control per channel with independent error amplifiers, internal compensation, and phase-shifted clock generation to reduce input ripple. Its dual-buck architecture supports either independent 3A outputs or shared 6A operation with synchronized PWM timing and frequency spread spectrum for EMI reduction.

It integrates a dual LDO system: LDO1 powered from VIN (4V–36V) supplies VCC (5V ±5%), while LDO2-enabled when BIAS >4.8V-improves efficiency by powering internal circuitry from regulated output voltage. The I²C interface enables full PMBus-compatible register access to output voltage, current limit, switching frequency, line drop compensation, and phase delay settings stored in one-time-programmable (OTP) memory.

Key Specifications

Pinout & Package

MPQ4272GVE-0001-AEC1-P is housed in a wettable-flank QFN-21 package (4mm × 5mm), optimized for automated optical inspection (AOI) and thermal performance in automotive PCBs. The exposed thermal pad must be soldered to a dedicated GND plane for θ_JA = 44°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-buck automotive power delivery applications.

Compared with MPQ4272GVE-0000-AEC1, the -0001 variant reduces startup time and design validation effort via factory-programmed OTP defaults; versus TPS65988DHAR, it delivers AEC-Q100 compliance, wider input range (4V vs. 6V min), and true dynamic I²C reconfiguration - critical for adaptive automotive power architectures.

Availability

MPQ4272GVE-0001-AEC1-P is available at Aetrix Electronics and suitable for automotive USB-C charging modules, infotainment system power rails, and ADAS camera ECU designs requiring stable component supply with guaranteed AEC-Q100 Grade 1 qualification and long-term automotive lifecycle support.

Supply support for MPQ4272GVE-0001-AEC1-P 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, with over 20 years of expertise in DC/DC conversion, motor drivers, and automotive-grade solutions.

The MPQ4272 product line is designed specifically for automotive USB Type-C power delivery systems, combining dual-buck regulation, I²C configurability, and AEC-Q100 reliability to replace multi-chip PD solutions in space-constrained vehicle platforms.

FAQ

What is the purpose of the BIAS pin on MPQ4272GVE-0001-AEC1-P?

The BIAS pin powers the secondary internal LDO (LDO2), which improves conversion efficiency when connected to a regulated output voltage ≥4.8V (e.g., 5V or 9V rail). When active, LDO2 disables the primary VIN-powered LDO1, reducing quiescent current and thermal load. If unused, BIAS must be tied to GND.

How does the I²C interface enable USB PD 3.0 compliance?

The I²C interface implements PMBus commands to dynamically configure output voltage (VOUT), current limit (ILIMIT), and switching frequency (fSW) in real time - matching USB PD 3.0 variable voltage profiles (5V/9V/15V/20V) and programmable power supply (PPS) requirements without external microcontroller intervention.

Can MPQ4272GVE-0001-AEC1-P operate with only one channel enabled?

Yes. Each buck channel can be independently enabled or disabled via I²C register control. When Channel 2 is disabled, Channel 1 delivers full 3A output with unchanged efficiency and thermal performance; the unused channel enters ultra-low-quiescent-current state (<5μA).

What protection features are hardware-based versus I²C-configurable?

Hardware protections include thermal shutdown (170°C trip), output over-voltage (120% nominal), and input UVLO (3.35V rising). I²C-configurable protections include current limit (3.6A ±5%), soft-start time (0.8ms default), and line drop compensation gain - allowing tailoring to specific cable lengths and load dynamics.

Is the QFN-21 package with wettable flanks compatible with standard automotive reflow profiles?

Yes. The MPQ4272GVE-0001-AEC1-P's QFN-21 (4mm×5mm) package meets J-STD-020D moisture sensitivity level 1 and supports peak reflow temperatures up to 260°C. Wettable flanks enable automated optical inspection of solder joint quality - a requirement for IPC-A-610 Class 3 automotive assembly.

Does MPQ4272GVE-0001-AEC1-P support phase interleaving between channels?

No. It uses fixed phase shift (not fully interleaved) between Channel 1 and Channel 2 clock signals to reduce input capacitor RMS current by ~30%, but does not support dynamic phase adjustment or true interleaving where duty cycles overlap. Phase offset is fixed at 180° for optimal ripple cancellation.

What is the role of the ISENS pin beyond battery short detection?

The ISENS pin serves dual functions: (1) primary detection of battery short-to-ground faults via 130–190mV threshold, and (2) secondary current-sense input for precision CC limit calibration. Its 20μs deglitch filter prevents false triggering from transient spikes during hot-plug events.