One-channel smart high-side switch with adjustable current limit

13-10-2023 | Texas Instruments | Power

Texas Instruments TPS1HTC30-Q1 is a single-channel, smart high-side switch with integrated NMOS power FET and charge pump created to satisfy the demands of 24V automotive battery systems. The low R ON(30mOhm) minimises device power dissipation, driving a wide range of output load current up to 6ADC, and the 60VDC operating range enhances system robustness.

The device incorporates protection features such as thermal shutdown, output clamp, and current limit. These features enhance system robustness during fault events such as a short circuit. The device implements an adjustable current limiting circuit that enhances the system's reliability by decreasing inrush current when driving large capacitive loads and minimising overload current. The device also supplies an accurate load current sense that permits improved load diagnostics, such as overload and open-load detection, allowing better predictive maintenance.

The device is offered in a small 14-pin, 4.4mm × 5mm HTSSOP leaded package with a 0.65mm pin pitch that minimises the PCB footprint.

The device can be employed as a high-side power switch for various resistive, inductive and capacitive loads, including low-wattage bulbs, LEDs, relays, solenoids, and heaters.


By Seb Springall

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