Monolithic Power Systems Inc. MPQ6527GF-AEC1-Z

Overview

MPQ6527GF-AEC1-Z from Monolithic Power Systems is a 10-channel AEC-Q100 Grade 1 half-bridge motor driver IC with integrated DMOS power MOSFETs, serial SPI control interface, and comprehensive diagnostics. It operates from 5.5V to 40V input, delivers up to 0.8A per channel, features R_DS(ON) of 1.3Ω (typ), and supports automotive body electronics such as seat adjusters and HVAC actuators.

For engineers reviewing the MPQ6527GF-AEC1-Z datasheet, MPQ6527GF-AEC1-Z pinout, MPQ6527GF-AEC1-Z application, or MPQ6527GF-AEC1-Z equivalent, key selection considerations include its dual VS supply architecture (VS1/VS2), thermal pre-warning capability (120°C–140°C), 5MHz SPI clock support, and fault-latched diagnostic register structure for real-time channel health monitoring.

Technical Context

The MPQ6527 implements ten independent half-bridge output stages grouped across two power domains: VS1 supplies channels 1, 2, 5, 7, and 8; VS2 supplies channels 3, 4, 6, 9, and 10 - both requiring external connection. Each channel supports high-side or low-side activation via 16-bit SPI command registers with configurable open-load detection and over-current shutdown.

Its serial interface uses CS-active-low framing, data-in (DI) sampled on CLK falling edge, and data-out (DO) synchronized to CLK rising edge, delivering 16-bit status feedback including latched TSD, OC, PSF, OLD, and thermal warning bits. The device integrates charge pump, internal LDO, and power-on reset circuitry, enabling direct 3.3V/5V logic compatibility without external level shifters.

Key Specifications

Pinout & Package

MPQ6527GF-AEC1-Z is housed in a thermally enhanced TSSOP-28 EP (exposed pad) package, optimized for automotive PCB layouts with high-power density and thermal dissipation requirements. The exposed pad must be soldered to a large copper pour for effective junction-to-board heat transfer.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10-channel half-bridge driver applications.

Compared with STSPIN250TR and TLE9201SG, MPQ6527GF-AEC1-Z uniquely combines 10-channel count, AEC-Q100 Grade 1 qualification, dual VS rail flexibility, and latched thermal pre-warning - making it the only option suitable for next-generation automotive seat and HVAC modules requiring zero-defect field performance and ISO 26262 ASIL-B ready diagnostics.

Availability

MPQ6527GF-AEC1-Z is available at Aetrix Electronics and suitable for automotive body control modules, HVAC actuator systems, and commercial vehicle door lock controllers requiring stable component supply across extended product lifecycles.

Supply support for MPQ6527GF-AEC1-Z 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 core expertise in DC-DC converters, motor drivers, and automotive-grade analog solutions.

The MPQ6527 belongs to MPS's AEC-Q100-qualified motor driver product line, designed specifically for automotive body electronics demanding high channel density, diagnostic rigor, and thermal resilience in space-constrained modules.

FAQ

What is the maximum allowable continuous output current per channel?

The MPQ6527GF-AEC1-Z supports up to 0.8A continuous output current per half-bridge channel under recommended operating conditions (TJ ≤ 125°C, VVS = 13.2V). This rating assumes proper PCB thermal design with the exposed pad soldered to ≥200mm² copper area. At 150°C junction temperature, R_DS(ON) rises to 2.8Ω, limiting practical current to ~0.6A for sustained operation.

How does the dual VS1/VS2 supply architecture improve system reliability?

VS1 and VS2 separate the power domains for two groups of five channels, allowing independent over-voltage lockout (OVLO) and under-voltage lockout (UVLO) monitoring. If one rail fails (e.g., VS2 shorted), only channels 3/4/6/9/10 shut down while VS1-powered channels remain operational - enabling fail-operational behavior in safety-critical subsystems like seat memory recall.

Can the MPQ6527GF-AEC1-Z drive inductive loads without external flyback diodes?

Yes. The integrated DMOS FETs include internal clamp diodes and robust avalanche-rated structures. Electrical characteristics confirm safe operation into inductive loads with energy dissipation handled internally during turn-off. External diodes are unnecessary unless peak transient energy exceeds 100mJ per channel - verified in MPS Application Note AN045.

What diagnostic data is available via the DO pin, and how is it structured?

The DO pin outputs a 16-bit status word on each CS falling edge, containing PRE_15 (latched TSD), OC, PSF, OLD, SHBENx, HBCNFx, and TW bits. Bits 15–0 map directly to Tables 3 and 4 in the datasheet. The PRE_15 bit remains latched until first CLK rising edge after CS low - enabling reliable capture of thermal shutdown events even during rapid SPI transactions.

Is the EN pin internally pulled down, and what happens during EN assertion?

Yes, EN has an internal 125kΩ pull-down resistor. When EN is driven low, all output stages disable, SPI registers reset to default (all HBENx = 0), and quiescent current drops to 1–5μA on both VS and VCC rails. Outputs re-enable within 50μs of EN rising above 2.0V, with full register state restored upon first valid SPI write.

How is open-load detection implemented, and what is its response time?

Open-load detection activates when low-side FET conduction current falls below 1–45mA for 200–600μs (configurable via OLSD_EN bit). Detection occurs during active low-side drive only; the corresponding OLD bit latches and - if OLSD_EN is set - forces the channel into Hi-Z. Recovery requires Status Register Reset (SRR) command or power cycle.

Does the MPQ6527GF-AEC1-Z support daisy-chained SPI configuration?

No - the MPQ6527GF-AEC1-Z uses standard 4-wire SPI with dedicated CS per device. However, multiple units can share DI, CLK, and DO lines with individual CS signals, enabling efficient multi-driver control from a single MCU SPI peripheral. Daisy-chaining would require DO-to-DI forwarding not supported by the silicon architecture.