Texas Instruments DRV8701PRGET

Overview

DRV8701PRGET from Texas Instruments is a single H-bridge gate driver IC that controls four external N-channel MOSFETs for bidirectional brushed DC motor control in 12–24 V systems. It operates from 5.9 V to 45 V, delivers 9.5 V high-side gate drive (VM > 12 V), integrates dual LDOs (3.3 V/4.8 V, 30 mA each), and supports PH/EN or PWM interface modes. It enables current regulation via shunt amplifier (20 V/V gain) and fixed off-time PWM chopping - used in industrial pumps, robotics, and power tools.

For engineers reviewing the DRV8701PRGET datasheet, DRV8701PRGET pinout, DRV8701PRGET application, or DRV8701PRGET equivalent, key selection criteria include gate drive current configurability (6–150 mA source / 12.5–300 mA sink), integrated current sense amplifier output (SO), low-power sleep mode (9 µA), and protection features including VM UVLO, OCP, and thermal shutdown.

Technical Context

The DRV8701PRGET implements a charge-pump-based high-side gate driver with regulated VGS of 9.5 V (nominal, VM > 12 V), supporting 100% PWM duty cycle operation. Its current regulation uses fixed off-time (25 µs) PWM chopping with blanking time (2 µs) and adjustable threshold via VREF input and external sense resistor.

It integrates two independent LDOs: DVDD (3.3 V, 30 mA) for logic supply and AVDD (4.8 V, 30 mA) for analog circuitry, both internally regulated from VM. Fault reporting is implemented via open-drain nFAULT and SNSOUT pins, indicating UVLO, overcurrent, pre-driver fault, or thermal shutdown conditions.

Key Specifications

Pinout & Package

DRV8701PRGET is housed in a 24-pin VQFN (RGE) package with PowerPAD™, measuring 4.0 × 4.0 × 0.9 mm. Thermal performance is optimized via exposed thermal pad (PPAD) soldered to PCB ground plane, achieving R_θJB = 12.2 °C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DRV8701PRGET, DRV8702PRGET adds SPI configurability while maintaining pin compatibility, whereas TB9051FTG replaces external FETs with integrated ones - trading design flexibility for BOM reduction in sub-3 A use cases.

Availability

DRV8701PRGET is available at Aetrix Electronics and suitable for industrial pumps and valves, robotics actuation, and power tools requiring stable component supply, long-term lifecycle support, and automotive-grade reliability validation.

Supply support for DRV8701PRGET 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 power management technologies with over 50 years of innovation in motor control ICs.

The DRV8701 product line delivers highly integrated, externally FET-driven H-bridge controllers targeting cost-sensitive, high-reliability brushed DC motor systems in industrial and consumer applications.

FAQ

What interface modes does the DRV8701PRGET support?

The DRV8701PRGET supports two control interface modes: PH/EN (phase/enable) and PWM. The specific mode is determined by device variant - DRV8701E uses PH/EN, DRV8701P uses PWM. DRV8701PRGET is the RGE-package, 24-pin VQFN version of the DRV8701P variant, so it uses the IN1/IN2 PWM interface. This allows direct connection to microcontroller PWM outputs without external logic translation.

How is gate drive current configured on the DRV8701PRGET?

Gate drive current on the DRV8701PRGET is configured via the IDRIVE pin using a single external resistor connected to GND or AVDD. Five discrete drive levels are available: 6/12.5 mA, 12.5/25 mA, 25/50 mA, 100/200 mA, and 150/300 mA (source/sink). Resistor value determines peak current - e.g., 68 kΩ to AVDD selects 150/300 mA. This eliminates discrete gate resistors and simplifies thermal design.

Does the DRV8701PRGET integrate current sensing capability?

Yes, the DRV8701PRGET integrates a precision shunt amplifier with 20 V/V gain and 200 mV typical offset. It accepts differential input from an external low-side sense resistor (SP/SN pins) and outputs amplified, offset-corrected voltage on the SO pin. This enables real-time motor current measurement by the system MCU without external op-amps or ADC conditioning circuitry.

What protection features are built into the DRV8701PRGET?

The DRV8701PRGET includes VM undervoltage lockout (UVLO), charge pump UVLO, overcurrent protection (OCP), pre-driver fault detection (PDF), and thermal shutdown (TSD). Fault conditions are reported simultaneously on open-drain nFAULT and SNSOUT pins. These protections eliminate the need for external monitoring circuitry and improve system robustness in harsh industrial environments.

Can the DRV8701PRGET operate in half-bridge mode?

Yes, the DRV8701PRGET can be configured for half-bridge operation by disconnecting GH1/GL1 and tying SH1 to GND via a 330 Ω resistor. In this mode, only one side of the H-bridge is active - for example, driving a unidirectional motor or solenoid. Control remains via IN1/IN2 (PWM mode), with IN1=1/IN2=0 enabling drive and IN1=1/IN2=1 enabling brake. This extends design reuse across simpler loads.