Monolithic Power Systems Inc. MPQ6523GRE-AEC1-Z

Overview

MPQ6523GRE-AEC1-Z from Monolithic Power Systems is a triple half-bridge motor driver IC with integrated DMOS power MOSFETs, AEC-Q100 Grade 1 qualified for automotive use, supporting up to 0.9A per channel, R_DS(ON) (HS+LS) ≤2Ω at 150°C, and serial interface clock up to 3MHz. It drives DC motors, solenoids, and valves in body electronics and chassis control systems.

For engineers reviewing the MPQ6523GRE-AEC1-Z datasheet, MPQ6523GRE-AEC1-Z pinout, MPQ6523GRE-AEC1-Z application, or MPQ6523GRE-AEC1-Z equivalent, key selection criteria include standby quiescent current (<6μA), daisy-chainable 3-wire SPI interface, open-load/short-circuit/thermal/UVLO diagnostics, and wettable-flank QFN-24 package for automated optical inspection.

Technical Context

The MPQ6523GRE-AEC1-Z implements three independent half-bridge output stages with high-side and low-side gate drivers, controlled via a 16-bit shift-register-based serial interface (CS/CLK/DI/DO). Each bridge supports programmable short-circuit shutdown delay (1.5ms or 12ms) and open-load detection enabled by bit OLD.

Thermal management includes dual-threshold monitoring: pre-warning at 120–170°C (TP flag) and shutdown at 150–200°C (full output disable), both with 15°C hysteresis. Fault reporting is consolidated on an open-drain FAULT pin and mirrored in the 16-bit status register (SCD, PSF, TP, EN bits).

Key Specifications

Pinout & Package

MPQ6523GRE-AEC1-Z is housed in a wettable-flank QFN-24 (4mm × 4mm) package with exposed thermal pad, optimized for automated optical inspection (AOI) and thermal performance in automotive PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TB9054FTG and DRV8876N, the MPQ6523GRE-AEC1-Z uniquely delivers triple half-bridge integration with automotive-grade diagnostics, daisy-chain SPI, and wettable-flank packaging-enabling compact, inspectable, and functionally safe motor control in body electronics without external supervision logic.

Availability

MPQ6523GRE-AEC1-Z is available at Aetrix Electronics and suitable for automotive body control modules, electronic parking brake systems, and HVAC actuator designs requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.

Supply support for MPQ6523GRE-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 analog and power ICs, with design centers across Asia and North America and global manufacturing partnerships.

The MPQ6523 belongs to MPS's automotive-qualified motor driver product line, engineered specifically for ASIL-B–capable body electronics applications requiring robust diagnostics, low quiescent current, and seamless integration into CAN/LIN-based vehicle networks.

FAQ

What is the purpose of the wettable flank feature in MPQ6523GRE-AEC1-Z?

The wettable flank enables automated optical inspection (AOI) of solder joints on the QFN-24 package's side terminals. During reflow, solder wets the vertical flank surface, creating a visible fillet that AOI systems can reliably image-critical for zero-defect requirements in automotive manufacturing where X-ray inspection is cost-prohibitive.

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

When the OLD bit is set low, the IC internally activates a weak pull-down current (~2mA) on each low-side switch. If no load is connected, the corresponding HS/LS output voltage floats high, triggering the open-load flag in the status register. This occurs only when the output is commanded off, eliminating false triggers during active drive.

Can MPQ6523GRE-AEC1-Z drive a single brushed DC motor in H-bridge mode?

Yes-two of its three half-bridges (e.g., OUT1/OUT2) can be configured as complementary high-side/low-side pairs to form a full H-bridge for bidirectional brushed DC motor control. The third bridge remains available for auxiliary functions like brake control or sensor excitation.

What happens to the serial interface during thermal shutdown?

The serial interface remains fully operational during thermal shutdown: CS/CLK/DI continue accepting commands, and DO outputs the status register (with all bits high indicating shutdown). This allows the host MCU to read fault state and initiate recovery (e.g., clear SRR bit) without resetting the entire communication link.

Is the FAULT pin compatible with 3.3V microcontrollers?

Yes-the FAULT pin is open-drain with 6V absolute maximum rating. When used with a 3.3V pull-up resistor, it delivers clean 0V/3.3V logic levels compatible with standard 3.3V MCUs. No level-shifting circuitry is required for interface.

How does the discharge circuit protect against supply overvoltage in standby?

When VS exceeds ~37V during long-term inhibit mode, an internal discharge path activates across an integrated resistor, bleeding charge from the input capacitor. This prevents VS from drifting above the 40V absolute maximum rating due to leakage currents, eliminating risk of catastrophic failure in battery-sensed systems.

Does MPQ6523GRE-AEC1-Z support PWM speed control?

Yes-each half-bridge accepts independent ON/OFF commands via the serial interface, enabling software-generated PWM by toggling HS/LS states at user-defined frequencies. With 20μs output rise/fall times and 2μs dead time, it supports effective PWM up to ~25kHz while preventing shoot-through.