Monolithic Power Systems Inc. MP1922GV-P

Overview

MP1922GV-P from Monolithic Power Systems is a 100V, single-channel half-bridge pre-driver IC designed to control external N-channel MOSFETs in high-voltage motor drive stages. It delivers 3A source / 4A sink gate drive current, integrates a charge pump and bootstrap circuit for 100% duty-cycle high-side operation, and includes desaturation protection, programmable slew rate, and an integrated current-sense amplifier. It targets BLDC/PMSM inverters operating up to 48V bus with thermal shutdown and fault reporting.

For engineers reviewing the MP1922GV-P datasheet, MP1922GV-P pinout, MP1922GV-P application, or MP1922GV-P equivalent, key selection criteria include its 100V VIN rating, adaptive dead-time behavior, configurable current-sense gain (21–210 V/V), and QFN-22 package thermal performance under continuous 3A gate drive loads.

Technical Context

The MP1922GV-P implements a dual-stage high-side gate drive architecture: primary bootstrap capacitor charging during low-side conduction, supplemented by an internal charge pump with auto-refresh triggered when BST voltage falls below VG × 0.65. Its desaturation detection monitors both HS and LS FETs using dedicated V_DSTH thresholds (VG − 1.2V for HS, 1.9V for LS) with 2µs deglitching.

It enforces shoot-through prevention via input logic decoding (INH/INL) and adaptive dead time-enabled only when slew rate resistor R_SR ≥ 10kΩ-which dynamically verifies gate discharge before enabling the opposing FET. The integrated current-sense amplifier supports bidirectional sensing via CSR bias and offers four gain settings (21–210 V/V) set by CSG-to-ground resistor value.

Key Specifications

Pinout & Package

MP1922GV-P uses a thermally enhanced QFN-22 (4mm × 5mm) package with exposed thermal pad (Pin 12) for direct PCB heatsinking. Pin numbering follows standard top-view orientation with Pin 1 at top-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MP1922GV-P, MP1921GV-P sacrifices current sensing and drive strength for lower BOM count, while DRV8305PWP trades voltage headroom and discrete flexibility for integration and digital configurability-making MP1922GV-P optimal for 48–72V discrete half-bridge systems requiring analog current feedback and robust 100V operation.

Availability

MP1922GV-P is available at Aetrix Electronics and suitable for brushless DC motor drives, automotive HVAC blowers, e-bike controllers, and power tool inverters requiring stable component supply across extended temperature ranges (−40°C to +165°C).

Supply support for MP1922GV-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, including DC/DC converters, motor drivers, and gate drivers, with global manufacturing and quality certifications.

The MP1922 product line delivers high-voltage, high-current half-bridge pre-drivers optimized for efficiency-critical motor control in automotive, industrial, and consumer applications-emphasizing integrated protection, thermal resilience, and analog sensing.

FAQ

What is the minimum BST capacitor value required for reliable MP1922GV-P operation?

The minimum BST capacitor is calculated as C_BST ≥ Q_G/ΔV, where Q_G is the total gate charge of the HS-FET and ΔV is the allowable BST voltage droop (typically 1–2V). For a 20nC MOSFET, 100nF is sufficient; however, 220nF–470nF X7R ceramic capacitors rated ≥25V are recommended to ensure margin across temperature and lifetime.

How does the MP1922GV-P handle shoot-through prevention without external timing components?

It uses input logic decoding (INH/INL states) plus adaptive dead time: when slew rate resistor R_SR ≥ 10kΩ, the device monitors GH/GL voltage transitions and delays the next FET turn-on until the driven gate voltage falls below 1.5V-ensuring full discharge before enabling the opposing FET without fixed RC delays.

Can the MP1922GV-P drive 100V-rated MOSFETs in a 72V battery-powered e-bike system?

Yes. Its 100V VIN rating and 115V absolute maximum BST/GH voltage support 72V nominal systems with 30V+ transient margin. Combined with desat detection (HS threshold = VG − 1.2V) and thermal shutdown, it protects against overvoltage, overcurrent, and overheating during regenerative braking or stall conditions.

What is the purpose of the AR pin, and how should it be configured?

The AR pin controls BST auto-refresh behavior. Grounding AR enables automatic refresh cycles when V_BST falls below VG × 0.65. Leaving AR open or pulling it high disables auto-refresh and pulls AR low during refresh-allowing microcontroller monitoring. For most motor drives, grounding AR is recommended to maintain 100% duty-cycle capability.

Does the integrated current-sense amplifier support bidirectional current measurement?

Yes. By applying a reference voltage (e.g., 1.65V) to CSR, the CSO output centers at that voltage during zero current. Positive and negative shunt voltages produce corresponding CSO deviations, enabling full-range bidirectional sensing-critical for FOC algorithms and regenerative braking detection.

Is the MP1922GV-P RoHS-compliant and halogen-free?

Yes. All MP1922GV-P units are lead-free, halogen-free, and fully compliant with EU RoHS Directive 2011/65/EU. MPS maintains green status documentation on its official website under Quality Assurance, with material declarations available upon request for automotive and industrial customers.