Texas Instruments TPS1HC03-Q1 Single-Channel Smart High-Side Switch
Texas Instruments TPS1HC03-Q1 Single-Channel Smart High-Side Switch includes an integrated NMOS power FET and charge pump, designed for 12V automotive battery systems. The low on-resistance (3.2mΩ) minimizes device power dissipation when driving a wide range of output load currents up to 19A DC.
The device integrates protection features such as thermal shutdown, output clamp, and current limit. TPS1HC03-Q1 implements an adjustable current-limiting circuit that improves system reliability by reducing inrush current when driving large capacitive loads and minimizing overload current. Adjust the adjustable current limit from 20A to 57A using an external resistor on the ILIM pin. The device offers both thermal-regulated current limiting for capacitive loads at startup and non-regulated current limiting for motor inrush or bulb applications.
The device also provides accurate current sensing, enabling improved load diagnostics such as overload and open-load detection, enabling better predictive maintenance. The Texas Instruments TPS1HC03-Q1 is available in an 11-pin, 2.2mm × 3.6mm VQFN-HR wettable-flank package with 0.55mm pitch, minimizing the PCB footprint.
Features
- Single-channel smart high-side switch with full diagnostics
- Control using GPIO pins
- Open-drain status output
- Current sense analog output: sense accuracy < ±7% at ≥ 5A
- 3V to 28V wide operating voltage
- 3.2mΩ (typ.), 5.7mΩ (max.) at 150°C low RON
- < 1.4µA at 85°C ultra-low sleep current
- Adjustable current limit with and without thermal regulation, and a 20A to 57A current limit range
- Protection
- Overload and short-circuit protection
- Undervoltage lockout (UVLO)
- Thermal shutdown and swing with self-recovery
- Integrated output clamp to demagnetize inductive loads
- Loss-of-GND, loss-of-battery, and reverse battery protection
- Diagnostics
- Global fault report for fast interrupt
- Overcurrent and short-to-ground detection
- Open-load and short-to-battery detection
- Qualified for automotive applications
- AEC-Q100 qualified with the following results:
- Temperature grade 1: –40°C to 125°C ambient operating temperature range
- Passed electrical transient disturbance immunity tests (ISO7637-2 and ISO16750-2)
- AEC-Q100 qualified with the following results:
- Small footprint: 11-pin wettable flank VQFN-HR 2.2mm × 3.6mm, 0.55mm pitch
- Functional safety capable, with documentation available to aid functional safety system design
Applications
- Zone control module
- Body control module
- Incandescent and LED lighting
- Front door module
- Seat heater
Functional Block Diagram
Development Tool
Texas Instruments HCXX-BASE-EVM Evaluation Module
Designed to evaluate the performance and functionality of the TPSxHCxx high-side switches.