Monolithic Power Systems Inc. MPQ1923GR-AEC1-Z

Overview

MPQ1923GR-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, high-frequency N-channel MOSFET half-bridge gate driver with 100V switching node rating, 8A sink/7A source peak output current at 12V VDD, and <5ns propagation delay matching between high-side and low-side channels. It integrates a bootstrap diode, supports TTL-compatible inputs, and targets automotive motor drivers and isolated DC/DC converters.

For engineers reviewing the MPQ1923GR-AEC1-Z datasheet, MPQ1923GR-AEC1-Z pinout, MPQ1923GR-AEC1-Z application, or MPQ1923GR-AEC1-Z equivalent, key selection criteria include bootstrap voltage range (120V), UVLO thresholds (4.5V falling), thermal shutdown (165°C), and QFN-8 package compatibility with high-density PCB layouts.

Technical Context

The MPQ1923GR-AEC1-Z implements independent high-side and low-side gate drive channels with matched timing (<5ns tMON/tMOFF) and integrated bootstrap diode to eliminate external diode requirement. Its floating high-side driver operates with BST–SW up to 120V and supports fast switching into 1nF loads (7.2ns tRISE, 5.5ns tFALL).

UVLO protection is implemented separately for VDD (4.1–4.9V falling threshold) and BST–SW (1.4–4.6V falling threshold), forcing both outputs low during undervoltage conditions. The device uses TTL-compatible inputs with 600mV hysteresis and internal 155kΩ pull-down resistors on INH/INL.

Key Specifications

Pinout & Package

MPQ1923GR-AEC1-Z is housed in a thermally enhanced QFN-8 (4mm × 4mm) package with exposed thermal pad. Pin 1 is marked by a dot or beveled corner; the exposed pad must be soldered to VSS for optimal thermal performance and EMI control.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPQ1923GRE-AEC1-Z, the MPQ1923GR-AEC1-Z offers identical performance in a smaller QFN-8 footprint but fewer thermal vias; versus LM5109BMAX/NOPB, it delivers automotive-grade reliability, integrated bootstrap, and sub-5ns timing matching-critical for high-efficiency, high-frequency automotive power stages.

Availability

MPQ1923GR-AEC1-Z is available at Aetrix Electronics and suitable for automotive motor control, telecom power supplies, avionics DC/DC converters, and industrial two-switch forward converters requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for MPQ1923GR-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 over two decades of expertise in DC/DC conversion, motor control, and gate driver technology.

The MPQ1923-AEC1 product line delivers AEC-Q100 qualified half-bridge drivers optimized for automotive electrification systems-including EPS, HVAC blowers, and onboard chargers-where high voltage, high speed, and functional safety readiness are essential.

FAQ

What is the maximum allowable switching node voltage (V_SW) for MPQ1923GR-AEC1-Z?

The absolute maximum V_SW rating is +100V under continuous operation, with short-duration (≤2µs) tolerance up to +120V. This rating enables use in 48V automotive systems with load-dump protection margins and telecom 48V/54V bus applications without derating.

Does MPQ1923GR-AEC1-Z require an external bootstrap diode?

No. The device integrates a bootstrap diode with forward voltage of 0.9V at 100µA and dynamic resistance of 3.1–6.5Ω. This eliminates the need for an external diode, reducing component count, PCB area, and potential failure points in high-reliability automotive designs.

How is shoot-through prevented in MPQ1923GR-AEC1-Z?

Shoot-through is mitigated through <5ns propagation delay matching between HS and LS channels, independent INH/INL inputs enabling precise dead-time control, and dual UVLO that forces both outputs low during insufficient VDD or BST–SW voltage-preventing unintended conduction during power-up or fault conditions.

What is the recommended PCB layout practice for thermal management?

The exposed thermal pad must be soldered to a solid VSS ground plane using ≥4 thermal vias (0.3mm diameter, spaced ≤1mm apart). Input and bootstrap bypass capacitors (C2, C3) should be placed within 2mm of their respective pins, with ground connections routed directly to the pad-not daisy-chained-to minimize loop inductance and thermal resistance.

Can MPQ1923GR-AEC1-Z drive 100V-class MOSFETs in active-clamp forward topology?

The datasheet explicitly states the MPQ1923-AEC1 "may not be able to operate at 100V in an active-clamp forward topology" due to voltage stress on the BST–SW node during reset. For this topology, derating to ≤80V V_SW or selecting a higher-voltage driver is recommended to ensure reliable operation.

What is the minimum input pulse width supported by INH and INL?

The minimum guaranteed input pulse width is 50ns, ensuring reliable detection of narrow PWM edges in high-frequency (>10MHz) control loops. This specification is verified by design and validated across -40°C to +125°C junction temperature range per AEC-Q100 Grade 1 requirements.

Is the QFN-8 package of MPQ1923GR-AEC1-Z compatible with standard reflow profiles?

Yes. The QFN-8 package is JEDEC MO-220 compliant with MSL Level 1 rating and lead-free/halogen-free construction. It supports standard Pb-free reflow profiles (peak 260°C, 20–40s above 217°C), and the exposed pad enhances thermal transfer during soldering and operation.