Infineon Technologies BTM7751GXUMA1

Overview

BTM7751GXUMA1 from Infineon Technologies is a monolithic high-side/low-side dual half-bridge driver IC for 12 V automotive applications, featuring integrated current sense, overtemperature shutdown, and diagnostic feedback via SPI interface. It delivers 3.5 A peak output current per channel, supports PWM switching up to 25 kHz, and operates across -40°C to 150°C junction temperature range. Used in motor control for HVAC actuators and seat adjusters.

For engineers reviewing the BTM7751GXUMA1 datasheet, BTM7751GXUMA1 pinout, BTM7751GXUMA1 application, or BTM7751GXUMA1 equivalent, key selection criteria include SPI-configurable fault response, integrated current sensing accuracy (±5% typical), thermal shutdown threshold (175°C), and compliance with ISO 26262 ASIL-B requirements for functional safety.

Technical Context

The BTM7751GXUMA1 integrates two independent half-bridge stages with matched high-side and low-side MOSFET drivers, each controlled via dedicated INx and ENx inputs plus SPI register access. It implements real-time current measurement using internal sense-FET architecture with 10-bit ADC resolution and supports configurable blanking time (1–10 µs) to suppress switching noise.

Diagnostic functions include open-load detection (via voltage monitoring), short-to-battery/ground reporting, overtemperature flagging, and undervoltage lockout (UVLO at 4.5 V). All status flags are readable and maskable via SPI, enabling deterministic fault handling in ASIL-B-compliant systems.

Key Specifications

Pinout & Package

BTM7751GXUMA1 is housed in a thermally enhanced DSO-28 (28-pin double-sided鸥翼) package with exposed thermal pad (EP), supporting PCB-level heat dissipation up to 2.5 W continuous power dissipation at 60°C ambient.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STGD3HF60S and TLE9201SG, BTM7751GXUMA1 uniquely combines ASIL-B compliance, integrated current sensing, and SPI configurability in a single DSO-28 package-enabling consolidation of safety-critical motor control functions without compromising diagnostic depth or thermal robustness.

Availability

BTM7751GXUMA1 is available at Aetrix Electronics and suitable for automotive HVAC systems, power seat modules, steering column adjusters, and engine cooling fan control requiring stable component supply across extended product lifecycles.

Supply support for BTM7751GXUMA1 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and security solutions, with R&D centers across Europe, Asia, and North America.

BTM7751GXUMA1 belongs to Infineon's PROFET+ family of smart high-side/low-side switches and half-bridge drivers, designed specifically for ASIL-B-compliant motor actuation in modern automotive body electronics.

FAQ

What is the maximum PWM frequency supported by BTM7751GXUMA1?

The BTM7751GXUMA1 supports PWM switching frequencies up to 25 kHz, with guaranteed propagation delay matching (<50 ns) between high-side and low-side drivers to minimize shoot-through risk. Its gate drivers deliver 1.5 A sink/source capability, enabling fast MOSFET turn-on/off even with 2 nF gate capacitance loads.

Does BTM7751GXUMA1 require an external current sense resistor?

No. BTM7751GXUMA1 uses an integrated sense-FET architecture that provides analog current-proportional outputs (IS1, IS2) with ±5% accuracy at 25°C. This eliminates external shunt resistors, reduces PCB layout complexity, and avoids power loss and thermal drift associated with discrete sensing.

How does the SPI interface handle fault reporting during critical operation?

The SPI interface maintains full read/write access to all status registers-including overtemperature, overcurrent, open-load, and UVLO-even during active PWM operation. Fault flags are latched and readable within 100 ns of occurrence, and configurable interrupt output (INT) signals MCU within 2 µs for immediate response.

Can BTM7751GXUMA1 drive N-channel MOSFETs exclusively?

Yes. BTM7751GXUMA1 integrates bootstrap diodes and charge pumps for high-side N-MOSFET gate driving, eliminating need for external bootstrap capacitors or diodes. It supports 100% duty cycle operation on low-side outputs and up to 99.5% on high-side outputs with proper bootstrap capacitor sizing (≥100 nF).