Description：

The DRV824x-Q1 device family is a fully integrated H‑bridge driver suitable for a wide range of automotive applications. The device is a bidirectional full‑bridge driver with PWM or PH/EN control. Designed on a BiCMOS high‑power process technology node, this monolithic power package family offers excellent power handling and thermal performance with a small package footprint, easy PCB layout, EMI control, accurate current sensing, diagnostic capabilities, and high robustness. The family provides identical pin functions and scalable RON (current capability) to support different loads. The devices integrate an N‑channel H‑bridge, charge pump regulator, high‑side current sensing and regulation, current proportional output, and protection circuits. A low‑power sleep mode is also provided to achieve low quiescent current. The devices offer voltage monitoring and load diagnostics, as well as overcurrent and overtemperature protection. Fault conditions are indicated via the nFAULT pin. The devices are available in three variants – a hardware interface (HW/H) and two SPI interface variants: SPI(P) with an externally supplied logic supply, and SPI(S) with an internally generated logic supply. The SPI interface variants enable more flexible device configuration and fault monitoring.

Features：

AEC‑Q100 qualified for automotive applications:

– Temperature Grade 1: –40°C to +125°C, TA

Documentation available for functional safety system design

4.5V to 35V (40V absolute maximum) operating voltage range

QFN package: RON_LS + RON_HS = 250 mΩ

Maximum IOUT = 6A (QFN)

PWM operation up to 25 kHz with automatic dead‑time insertion

Configurable slew rate and spread spectrum clocking for low EMI

Integrated current sensing (no shunt resistor required)

Proportional load current output on IPROPI pin

Configurable current regulation

Protection and diagnostic features with configurable fault response (latch or retry):

– Load diagnostics in off‑state and on‑state for open‑load and short‑circuit detection

– Voltage monitoring on supply (VM)

– Overcurrent protection

– Overtemperature protection

– Fault indication via nFAULT pin

Supports 3.3V and 5V logic inputs

Low sleep current – typical 1.3 µA at 25°C

3 variants available:

– HW (H), SPI (S), or SPI (P)

Single full‑bridge with PWM or PH/EN mode

Device family comparison table available

Applications：

Automotive brushed DC motors and solenoids

Door modules and seat modules

Body control modules (BCM)

Gasoline engine systems

On‑board chargers