Monolithic Power Systems Inc. MPQ6626GF-AEC1-P

Overview

MPQ6626GF-AEC1-P from Monolithic Power Systems is a 40V, 0.8A hex half-bridge motor driver IC with integrated DMOS power MOSFETs, serial SPI control interface, AEC-Q100 Grade 1 qualification, and full diagnostic protection (SCP, OTW, OL, UVLO/OVLO). It drives six independent half-bridges for automotive seat/mirror actuators, HVAC dampers, and electronic throttle control.

For engineers reviewing the MPQ6626GF-AEC1-P datasheet, MPQ6626GF-AEC1-P pinout, MPQ6626GF-AEC1-P application, or MPQ6626GF-AEC1-P equivalent, key selection criteria include its 1.3Ω typical R_DS(ON) (HS+LS), 5MHz SPI clock support, 1–5μA quiescent current in standby, thermal pre-warning at 120°C–140°C, and dual VS supply rails (VS1/VS2) for optimized channel grouping.

Technical Context

The MPQ6626GF-AEC1-P implements six independent half-bridge output stages, each with high-side and low-side DMOS drivers controlled via a 16-bit SPI register interface. Its functional block includes charge-pump-based gate drive, per-channel over-current detection with 10–50μs shutdown delay, and open-load sensing on low-side switches using 1–45mA threshold current.

Thermal management uses dual-level monitoring: non-latching thermal warning (TW) at 120°C–140°C and latching thermal shutdown (TSD) at 150°C–175°C with 20°C hysteresis. Protection logic integrates UVLO (4.5V threshold), OVLO (36V threshold), and power-supply-fail (PSF) latching across VS1/VS2 rails.

Key Specifications

Pinout & Package

MPQ6626GF-AEC1-P is housed in a thermally enhanced TSSOP-28 EP package with exposed pad for PCB heat dissipation. Pin functions are validated per MPS datasheet Rev. 1.0 (2021).

Key Features

Applications

Equivalent & Alternatives

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

Compared with DRV8876QPWRQ1 and BD16949EFV-M, MPQ6626GF-AEC1-P delivers superior diagnostic granularity (latched TSD/OC/OLD with SRR reset), lower conduction loss (1.3Ω vs. ≥2.2Ω), and autonomous overvoltage protection via integrated discharge - making it optimal for ASIL-B–aligned body electronics with space and thermal constraints.

Availability

MPQ6626GF-AEC1-P is available at Aetrix Electronics and suitable for automotive seat control, HVAC damper actuation, electronic throttle modules, and steering column lock systems requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.

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

The MPQ6626 belongs to MPS's AEC-Q100–qualified automotive motor driver product line, engineered specifically for body electronics applications demanding robust diagnostics, low standby power, and compact integration in space-constrained ECUs.

FAQ

What is the maximum allowable VS voltage for continuous operation?

The MPQ6626GF-AEC1-P supports continuous operation up to 40V on VS pins, with absolute maximum rating of 45V. Operation above 40V risks exceeding thermal limits or triggering the integrated discharge circuit, which activates at ~37V to protect against sustained overvoltage in reverse-polarity protected systems.

How does the open-load detection function work, and what is its response time?

Open-load detection monitors low-side switch current; if below 1–45mA for 200–600μs, the OLD bit is set. When OLSD_EN = 1, the affected output transitions to Hi-Z. The delay is programmable via external RC timing on TEST pins per MPS AN-123, but default values are fixed in silicon per datasheet Rev. 1.0.

Can MPQ6626GF-AEC1-P drive brushed DC motors in both directions using a single device?

Yes - each of the six half-bridges independently controls one motor winding segment. For bidirectional control of a 2-wire DC motor, two adjacent half-bridges (e.g., OUT1/OUT2) are used in H-bridge configuration, with HBCNF bits setting HS/LS states to achieve forward/reverse/brake modes via SPI commands.

What is the purpose of the dual VS1/VS2 supply pins, and how should they be connected?

VS1 powers half-bridges 1/2/5 and the charge pump; VS2 powers half-bridges 3/4/6. They must be connected externally with low-inductance traces to the same battery rail. This separation isolates switching noise between channel groups and enables independent thermal management for clustered motor loads.

Does the device support daisy-chaining multiple units on a single SPI bus?

Yes - MPQ6626GF-AEC1-P supports daisy-chaining via DO-to-DI connection between devices. Each unit uses individual CS lines; DO output reflects the status register of the device whose CS is asserted, enabling synchronized fault reporting across up to 8 devices on one CLK/DI bus.

What happens to output states during an under-voltage lockout (UVLO) event?

When VS falls below 4.5V (typical), the PSF bit is set and all outputs transition to Hi-Z within 21ms. Outputs resume normal operation automatically once VS rises above the UVLO threshold plus hysteresis (≥4.6V), with no reset or reinitialization required - preserving register contents and diagnostic history.

Is the thermal pre-warning (TW) bit latched, and how is it cleared?

No - the TW bit is not latched; it asserts when junction temperature reaches 120°C–140°C and clears automatically when temperature drops below the recovery point (typically TJW − 20°C). Unlike TSD or OC, TW does not disable outputs, enabling firmware to implement gradual derating before shutdown.