Texas Instruments DRV8343HPHPRQ1

Overview

DRV8343HPHPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive three-phase smart gate driver IC for driving six N-channel MOSFETs in independent half-bridge configurations. It operates from 5.5 V to 60 V, integrates three bidirectional current sense amplifiers with adjustable gain (5–40 V/V), and delivers up to 1-A peak source / 2-A peak sink gate drive current. It supports 12-V/24-V BLDC motor control in fuel pumps and HVAC blowers.

For engineers reviewing the DRV8343HPHPRQ1 datasheet, DRV8343HPHPRQ1 pinout, DRV8343HPHPRQ1 application, or DRV8343HPHPRQ1 equivalent, key selection considerations include its hardware-configurable interface (no SPI), independent high-/low-side control per phase, integrated 3.3-V/30-mA LDO, charge-pump-based 100% duty-cycle support, and comprehensive fault protection including nFAULT signaling and register-accessible diagnostics.

Technical Context

The DRV8343HPHPRQ1 implements a hardware-only (H/W) interface variant of the DRV8343-Q1 family, eliminating SPI pins (SDI/SDO/SCLK/nSCS/VSDO) and replacing them with dedicated configuration inputs (MODE, IDRIVE, VDS, GAIN). Its smart gate drive architecture enables programmable slew rate and peak current via external resistor ladders on seven-level input pins, supporting precise timing control without firmware overhead.

Three integrated low-side current sense amplifiers share a common VREF supply and deliver analog outputs (SOA/SOB/SOC) with selectable gain-enabling simultaneous phase-current measurement in BLDC commutation. Protection logic includes VM UVLO, charge pump UV, MOSFET overcurrent, short-to-battery/ground detection, thermal warning/shutdown, and fault reporting via open-drain nFAULT.

Key Specifications

Pinout & Package

DRV8343HPHPRQ1 uses the HTQFP-48 PowerPAD™ package (7.00 mm × 7.00 mm body, 0.5-mm pitch) with an exposed thermal pad requiring direct connection to PCB ground plane for thermal management and EMI reduction.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar three-phase gate driver applications.

Compared with DRV8343HPHPRQ1, the DRV8343SPHPRQ1 offers firmware flexibility at the cost of added software complexity, while the DRV8353RPHPRQ1 trades minor feature expansion (reverse-battery protection) for superior thermal resilience - both retain identical motor-control functionality and mechanical compatibility.

Availability

DRV8343HPHPRQ1 is available at Aetrix Electronics and suitable for automotive BLDC motor control, fuel/water pump modules, and HVAC blower systems requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.

Supply support for DRV8343HPHPRQ1 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-grade power management solutions with decades of automotive qualification expertise.

The DRV8343-Q1 product line delivers integrated three-phase gate drivers with current sensing and protection for electric powertrain subsystems - designed specifically for 12-V/24-V automotive motor control where reliability, thermal robustness, and functional safety readiness are critical.

FAQ

What is the maximum VM supply voltage supported by the DRV8343HPHPRQ1?

The DRV8343HPHPRQ1 supports a continuous VM supply voltage up to 50 V and withstands transient overvoltage events up to 60 V per ISO 16750-2. Absolute maximum rating is 65 V, but operation above 60 V risks permanent damage. The device is optimized for 12-V and 24-V automotive battery systems with life-time nominal voltage range of 5.5 V to 50 V.

Does the DRV8343HPHPRQ1 include an integrated voltage regulator?

Yes, the DRV8343HPHPRQ1 integrates a linear 3.3-V regulator (DVDD) capable of sourcing up to 30 mA. This output powers external logic or microcontrollers and remains stable across the full 5.5-V to 60-V VM input range. Bypass capacitors between DVDD and AGND are required per the datasheet layout guidelines.

How does the DRV8343HPHPRQ1 handle fault conditions?

The DRV8343HPHPRQ1 reports all faults-including VM undervoltage, charge pump fault, MOSFET overcurrent, short-to-battery/ground, and thermal shutdown-via the open-drain nFAULT pin. A logic-low assertion indicates active fault; a 20-μs low pulse on ENABLE resets latched faults. Unlike the SPI variant, fault details are not register-accessible in the H/W version.

Can the DRV8343HPHPRQ1 drive high-side and low-side MOSFETs independently per phase?

Yes, the DRV8343HPHPRQ1 provides fully independent control of high-side and low-side MOSFETs per phase via dedicated SHx/DLx sense inputs and GHx/GLx gate outputs. This architecture enables advanced topologies such as independent PWM, asymmetrical drive, and solenoid actuation without cross-conduction risk.

What current sensing capability does the DRV8343HPHPRQ1 provide?

The DRV8343HPHPRQ1 integrates three low-side current sense amplifiers (CSAs) with selectable gain (5/10/20/40 V/V) set by the GAIN pin. Each CSA accepts differential inputs (SPA/SNA, SPB/SNB, SPC/SNC) and delivers rail-to-rail analog outputs (SOA/SOB/SOC) referenced to VREF - enabling accurate bidirectional phase current measurement without external components.