VNH7070BASTR | STMicroelectronics | AEC‑Q100 Automotive Fully‑Integrated H‑Bridge Brushed DC Motor Driver

Brand: ST (STMicroelectronics). AEC‑Q100 automotive fully‑integrated H‑Bridge brushed DC motor driver built on VIPower® M0‑7 power technology. SO‑16N tape‑and‑reel package (TR = Tape & Reel). Single‑chip solution for driving one high‑power brushed DC motor.

It integrates two high‑side MOSFETs and two low‑side MOSFETs to form a complete H‑bridge. Power transistors, drive logic, comprehensive protection and diagnostic circuits are all integrated inside one chip. The inputs are 3.3 V‑MCU logic compatible and support PWM speed regulation. It provides current‑sense feedback and extensive fault diagnostics for harsh automotive‑electronic environments. Few external components are required, simplifying motor‑drive PCB design.

Key Specifications

Supply voltage: **4 V‑28 V, maximum rating 38 V** (optimized for 12 V automotive systems)

 Continuous output current: **15 A**, higher peak current available

Typical on‑resistance per arm: 70 mΩ

Maximum PWM frequency: **20 kHz**

 Input level: 3 V CMOS‑compatible, direct connection to MCU I/O pins

Package: SO‑16N (16‑pin), tape‑and‑reel for VNH7070BASTR

Qualification: **AEC‑Q100 automotive qualified**

 Junction temperature range: −40 ℃ ~ +150 ℃

 Protection features: Undervoltage shutdown, overvoltage clamping, thermal shutdown, shoot‑through prevention, current‑limit power limiting, loss‑of‑ground / loss‑of‑supply protection, short‑to‑GND / short‑to‑VCC protection

‑ Diagnostic CS pin: Analog current feedback, short‑circuit detection, open‑load detection, thermal‑overload indication

‑ Standby: Ultra‑low quiescent current, standby‑mode supported

## Main Functions

1. H‑Bridge drive: control **brushed DC motor forward rotation, reverse rotation, braking and stop**.

2. PWM speed control: motor speed adjustable via 0‑20 kHz PWM signal.

3. Current‑sensing via CS pin: outputs analog signal proportional to motor current. MCU reads current value for stall‑detection and closed‑loop current control.

4. Full‑set hardware protection: automatic protection against thermal overload, overcurrent, short‑circuit and undervoltage to prevent chip damage.

5. Fault‑diagnosis output: reports short‑circuit, open‑load and thermal‑fault conditions to host controller.

6. Usable in half‑bridge mode to drive two separate loads.

Application Scope

1. Automotive electronics (primary application): window lift motors, seat adjustment, mirror folding, door‑lock actuators, automotive water pumps & fans, body actuators (AEC‑Q100 qualified).

2. Construction‑machinery body actuators and on‑board hydraulic‑valve drivers.

3. Industrial equipment: high‑power brushed‑DC‑motor actuators, industrial valves and automation clamps.

4. AGVs, robot actuators and electric tooling equipment.
5. High‑power brushed motors for medical devices.