Texas Instruments DRV8143SQRXYRQ1

Overview

DRV8143SQRXYRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive half-bridge driver with integrated high-side current sense, configurable slew rate, spread-spectrum clocking, and comprehensive diagnostics. It operates from 4.5 V to 35 V, delivers up to 20 A output current, supports PWM frequencies up to 125 kHz with automatic dead time, and targets brushed DC motor control in body electronics modules.

For engineers reviewing the DRV8143SQRXYRQ1 datasheet, DRV8143SQRXYRQ1 pinout, DRV8143SQRXYRQ1 application, or DRV8143SQRXYRQ1 equivalent, key selection considerations include its SPI(S) interface variant, VQFN-HR (14) 3 mm × 4.5 mm package, 42 mΩ total R_ON, low 1 µA sleep current, and integrated open-load/short-circuit diagnostics for automotive BCM and seat/door modules.

Technical Context

The DRV8143SQRXYRQ1 implements a monolithic N-channel half-bridge with charge pump regulator, high-side current sensing, and proportional analog current feedback on IPROPI. Its SPI(S) variant derives logic supply internally from VM, eliminating need for external VDD and preventing brownout during VM transients.

It integrates voltage monitoring on VM and VCP, overcurrent and overtemperature protection with configurable fault reaction (latched or retry), and on-state load diagnostics. The device supports 3.3 V/5 V logic inputs and offers eight programmable slew rate levels and spread-spectrum clocking to reduce EMI.

Key Specifications

Pinout & Package

VQFN-HR (14) package, 3 mm × 4.5 mm body size, wettable flank terminals, thermal pad on bottom for enhanced heat dissipation in automotive under-hood environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DRV8143HQRXYRQ1, the DRV8143SQRXYRQ1 adds SPI-based diagnostics and flexible configuration at the cost of one extra GPIO; versus DRV8144SQRXYRQ1, it trades 8 A current headroom for smaller package size and lower system cost in mid-power applications.

Availability

DRV8143SQRXYRQ1 is available at Aetrix Electronics and suitable for automotive body control modules, seat/door actuation systems, and fuel/water pump control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for DRV8143SQRXYRQ1 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and automotive ICs, with decades of automotive qualification expertise and functional safety infrastructure.

The DRV814x-Q1 product line delivers fully integrated, AEC-Q100 qualified half-bridge drivers for automotive brushed DC motor control-designed to simplify layout, reduce EMI, and enhance diagnostic coverage in body electronics.

FAQ

What is the package type and pin count for DRV8143SQRXYRQ1?

DRV8143SQRXYRQ1 uses the VQFN-HR (14) package with a 3 mm × 4.5 mm body size and wettable flanks. It has 14 terminals, including power (VM, OUT, VCP), ground (GND), control (IN, DRVOFF, nSLEEP, nSCS, SCLK, SDI, SDO), analog feedback (IPROPI), fault indication (nFAULT), and no-connect (NC). Thermal pad is exposed on the bottom for heatsinking.

Does DRV8143SQRXYRQ1 support both 3.3 V and 5 V logic interfaces?

Yes, DRV8143SQRXYRQ1 supports 3.3 V and 5 V logic inputs on all digital pins (IN, DRVOFF, nSLEEP, nSCS, SCLK, SDI, SDO). The SDO output level is automatically referenced to the nSLEEP pin voltage-ensuring compatibility whether the host MCU operates at 3.3 V or 5 V without level-shifting circuitry.

How does the integrated current sense in DRV8143SQRXYRQ1 eliminate the need for a shunt resistor?

DRV8143SQRXYRQ1 integrates high-side current sensing using MOSFET r_DS(on) tracking and on-chip amplification. It provides a proportional analog voltage on the IPROPI pin (0–5.5 V), directly representing load current. This replaces external shunt resistors, saving PCB area, reducing power loss, and avoiding accuracy drift due to temperature or solder joint resistance.

What diagnostic capabilities does DRV8143SQRXYRQ1 provide for automotive safety compliance?

DRV8143SQRXYRQ1 provides off-state and on-state load diagnostics (open-load, short-to-battery, short-to-ground), VM and VCP voltage monitoring, overcurrent protection, overtemperature protection, and fault reporting via the nFAULT pin. These features support ASIL-B functional safety goals and simplify ISO 26262-compliant system design without external monitoring circuitry.

Can DRV8143SQRXYRQ1 operate with PWM frequencies above 100 kHz?

Yes, DRV8143SQRXYRQ1 supports PWM frequencies up to 125 kHz with automatic dead time insertion. Its switching parameters-including propagation delay (as low as 0.3 µs), slew rate control (up to 45.8 V/µs), and matched rise/fall times-ensure clean commutation and minimal shoot-through risk at high frequencies used in precision motor control.