Texas Instruments DRV8145PQPWPRQ1

Overview

DRV8145PQPWPRQ1 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 delivers 46A peak output current, operates from 4.5V to 35V, supports PWM up to 125 kHz with automatic dead time, and features low 1μA sleep current. It is used in body control modules for door, wiper, and seat actuation.

For engineers reviewing the DRV8145PQPWPRQ1 datasheet, DRV8145PQPWPRQ1 pinout, DRV8145PQPWPRQ1 application, or DRV8145PQPWPRQ1 equivalent, key selection criteria include its HTSSOP-28 package with 6×OUT/6×VM/6×GND parallel routing, SPI(P) interface requiring external 4.5–5.5V VDD logic supply, programmable ITRIP regulation (7 levels), and fault reaction configurability (latched vs. retry).

Technical Context

The DRV8145PQPWPRQ1 implements a monolithic N-channel half-bridge with integrated charge pump regulator, high-side current sensing, and proportional analog current feedback on IPROPI. Its SPI(P) variant uses externally supplied VDD (4.5–5.5 V) to avoid brownout during VM transients, enabling robust operation in automotive power domains.

It provides full load diagnostics in both on-state and off-state-including open-load and short-circuit detection-and integrates voltage monitoring on VM and VCP, over-current protection with three OCP threshold options, and over-temperature shutdown. Fault status is reported via open-drain nFAULT and detailed register logging.

Key Specifications

Pinout & Package

DRV8145PQPWPRQ1 is packaged in HTSSOP-28 (4.4 mm × 9.7 mm) with exposed thermal pad. The layout features six parallel OUT pins (pins 9–11, 18–20), six parallel VM pins (pins 6–7, 8, 21–23), and six parallel GND pins (pins 12–17) to support high-current routing and thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DRV8145SQPWPRQ1, DRV8145PQPWPRQ1 trades package size for superior thermal performance and VM transient immunity via VDD; compared with DRV8144SQPWPRQ1, it delivers +53% peak current and lower conduction loss at identical footprint constraints.

Availability

DRV8145PQPWPRQ1 is available at Aetrix Electronics and suitable for automotive body control modules, seat/door/trunk actuation systems, and fuel/water/oil pump drivers requiring stable component supply, AEC-Q100 qualification, and functional safety documentation support.

Supply support for DRV8145PQPWPRQ1 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 broad functional safety support infrastructure.

The DRV814x-Q1 product line delivers monolithic half-bridge drivers optimized for automotive brushed DC motor and solenoid control, emphasizing integrated diagnostics, EMI control, and scalable current capability across package variants.

FAQ

What is the maximum continuous output current supported by the DRV8145PQPWPRQ1?

The DRV8145PQPWPRQ1 supports 46 A peak output current, validated under recommended operating conditions (4.5 V ≤ V_VM ≤ 35 V, –40°C ≤ T_A ≤ 125°C). Continuous current depends on PCB layout, heatsinking, and ambient temperature; thermal design must account for R_θJA = 27.7°C/W (HTSSOP) and power dissipation from R_ON (9.5 mΩ HS + 9.5 mΩ LS @ 25°C). Derating is required above 100°C ambient.

Does the DRV8145PQPWPRQ1 require an external shunt resistor for current sensing?

No, the DRV8145PQPWPRQ1 integrates high-side current sensing and delivers proportional analog current feedback on the IPROPI pin. It provides a scaling factor of 5980 A/A (HTSSOP) with ±5% accuracy for 4–21.8 A loads, eliminating the need for external shunt resistors, sense amplifiers, and associated PCB area and power loss - a key differentiator versus discrete driver solutions.

What is the purpose of the VDD pin on the DRV8145PQPWPRQ1?

The VDD pin on the DRV8145PQPWPRQ1 supplies the internal logic circuitry with a dedicated 4.5–5.5 V source, decoupled from the motor supply (VM). This prevents device reset during VM transients (e.g., load dump or cranking), ensuring reliable SPI communication and fault reporting even when VM dips below logic POR thresholds - a critical advantage over SPI(S) variants like DRV8145SQPWPRQ1.

How does the DRV8145PQPWPRQ1 support functional safety compliance?

The DRV8145PQPWPRQ1 is AEC-Q100 Grade 1 qualified and functionally safe-capable, with documentation supporting ISO 26262 ASIL-B system design. It provides diagnostic coverage including on/off-state load diagnostics, VM/VCP voltage monitoring, configurable OCP/OTP, fault logging via SPI registers, and programmable fault reactions (latched or retry), enabling systematic fault handling without external supervision.

Can the DRV8145PQPWPRQ1 drive both brushed DC motors and solenoids?

Yes, the DRV8145PQPWPRQ1 is explicitly designed for both brushed DC motors and solenoids in automotive applications. Its 46 A peak current, programmable ITRIP regulation, fast PWM capability (up to 125 kHz), and robust diagnostics (including open/short detection in active and inactive states) make it suitable for diverse inductive loads such as door lock actuators, wiper motors, fuel pump solenoids, and seat adjustment mechanisms.