Description：

The TPS1HC30-Q1 device is a high-side power switch with comprehensive protection, integrating an NMOS power FET and a charge pump, specifically designed for intelligent control of various loads. This device stands out in the market with its precise current sensing and programmable current limit features. With a low logic high threshold voltage (VIH) of 1.5V on the input pin, it enables the use of MCUs as low as 1.8V. The high-accuracy current sensing enables better real-time monitoring and more accurate diagnostics without the need for further calibration. The external high-accuracy current limit allows the current limit value to be set according to the application. This device significantly improves system reliability by effectively clamping inrush current during startup or short-circuit conditions. The TPS1HC30-Q1 device can be used as a high-side power switch for various resistive, inductive, and capacitive loads, including low-wattage bulbs, LEDs, relays, solenoids, and heaters.

Features：

• Single-channel smart automotive high-side power switch with comprehensive diagnostics

– Open-drain status output

– Analog current-sense output

• Wide operating voltage range: 3V to 28V

• Low standby current: 2.5µA at 85°C

• Operating junction temperature range: –40°C to 150°C

• Supports 1.8V, 3.3V, and 5V logic voltages

• ADC protection via fault detection voltage clamping

• Programmable current limit with ±15% accuracy (at 3.5A)

• High-accuracy current sensing with ±6% accuracy at 1A

• Protection

– Overload and short-circuit protection

– Negative voltage clamping for inductive loads

– Undervoltage lockout (UVLO) protection

– Thermal shutdown and thermal oscillation with auto-retry

– Ground-loss and power-loss protection

– Reverse battery protection

• Diagnostics

– Open-load and battery-short detection in both on and off states

– Overload and ground-short detection

– Thermal shutdown and thermal oscillation detection

• Qualification

– AEC-Q100 qualified for automotive applications:

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

– ISO7637-2 and ISO16750-2 certified for electrical transient immunity

Applications：

• Automotive display modules

• ADAS modules

• Seat comfort modules

• HVAC control modules

• Body control modules