Monolithic Power Systems Inc. MPQ6626GF-AEC1-Z

Overview

MPQ6626GF-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified 6-channel 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 1.3Ω typical R_DS(ON) (HS+LS), and supports automotive body electronics such as seat adjusters and HVAC actuators.

For engineers reviewing the MPQ6626GF-AEC1-Z datasheet, MPQ6626GF-AEC1-Z pinout, MPQ6626GF-AEC1-Z application, or MPQ6626GF-AEC1-Z equivalent, key selection criteria include its 5MHz SPI timing compliance, thermal pre-warning/thermal shutdown thresholds (120°C/150°C), open-load detection with configurable shutdown, dual VS supply domains (VS1/VS2), and low 1–5μA quiescent current in standby mode.

Technical Context

The MPQ6626 implements six independent half-bridge output stages, each with high-side and low-side DMOS drivers controlled via a 16-bit SPI register interface. Control logic includes per-channel enable/config bits (HBENx/HBCNFx), open-load detection (OLSD_EN), and status latching with SRR reset capability.

Diagnostics are hardware-accelerated and fully integrated: short-circuit detection triggers within 10–50μs, thermal pre-warning activates at 120–140°C with 20°C hysteresis, and over-voltage lockout engages at 33–39V on VS with 1–4V hysteresis. All protections drive outputs to Hi-Z and set corresponding latch bits in the diagnostic register.

Key Specifications

Pinout & Package

MPQ6626GF-AEC1-Z is housed in a thermally enhanced TSSOP-28 EP package with exposed pad for improved heat dissipation. The package supports surface-mount assembly and meets IPC/JEDEC standards for automotive reliability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPQ6626GF-AEC1-Z, MPQ6628GF-AEC1-Z offers higher current headroom and identical footprint, while TLE9201SG trades SPI flexibility for LIN integration and reduced diagnostic granularity - making MPQ6626 the optimal balance of precision control, compact diagnostics, and automotive-grade robustness.

Availability

MPQ6626GF-AEC1-Z is available at Aetrix Electronics and suitable for automotive seat control, HVAC actuation, and electronic parking brake auxiliary systems requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.

Supply support for MPQ6626GF-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MPQ6626 belongs to MPS's automotive-grade motor driver product line, engineered specifically for reliable, SPI-controlled actuation in harsh-temperature automotive environments with integrated diagnostics and low-power standby.

FAQ

What is the maximum allowable VS supply voltage for continuous operation?

The MPQ6626GF-AEC1-Z supports continuous operation up to 40V on the VS pins, with absolute maximum rating of 45V. Operation above 40V risks triggering the OVLO protection (33–39V threshold), and sustained exposure beyond 45V may cause permanent damage per absolute maximum ratings.

How does the open-load detection function without external components?

Open-load detection uses internal current comparators monitoring low-side FET conduction. When LS current falls below 1–45mA (configurable via I_OLD) for ≥200–600μs (t_DOLD), the OLD bit is set. No external sense resistor or amplifier is needed - the function is fully integrated and calibrated across temperature.

Can all six half-bridges be driven simultaneously at full 0.8A load?

No - simultaneous full-load operation of all six channels exceeds thermal limits. With θ_JA = 32°C/W and P_D(max) = 3.9W at 25°C ambient, total dissipation at 6 × (0.8A)² × 1.3Ω ≈ 5.0W exceeds safe operating area. Derating or staggered activation is required for sustained multi-channel use.

Is the DO pin truly tri-state when CS is high?

Yes - when CS is high, the DO pin enters high-impedance (tri-state) mode as specified in Electrical Characteristics. This allows multiple MPQ6626 devices to share a common DO line on a daisy-chained SPI bus, provided only one device has CS low at any time.

What happens to output states during a thermal shutdown event?

Upon reaching 150°C junction temperature, affected half-bridge pairs latch into Hi-Z state, the TSD bit (PRE_15) is asserted, and TW remains set. Outputs do not recover automatically upon cooling - a Status Register Reset (SRR = 1) command or VCC power cycle is required to clear latches and re-enable channels.

Does the MPQ6626 support PWM input control, or is it SPI-only?

The MPQ6626 is SPI-only for configuration and status readback. It does not accept direct PWM signals on any pin. PWM-like behavior is achieved by rapidly updating HBCNFx bits via SPI to toggle HS/LS states - with minimum 100μs inter-command spacing per timing specs.

How is the "discharge circuit" triggered and what external components does it require?

The discharge circuit activates automatically when VS exceeds ~37V, sinking current through an internal resistor to ground. No external components are required - it operates transparently to protect against blocking-capacitor overvoltage during long inhibit periods after load-dump events.