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Texas Instruments TPS1HC100-Q1 Smart High-Side Switch

Texas Instruments TPS1HC100-Q1 Smart High-Side Switch is a fully protected high-side power switch, with integrated NMOS power FET and charge pump, targeted for the intelligent control of various loads. Accurate, current sense and programmable current limit features differentiate it from the market.

Low logic high threshold, VIH, of 1.5V on the input pins allow the use of MCUs GPIO signals to 1.8V. High-accuracy current sensing provides a better real-time monitoring effect and more accurate diagnostics without further calibration. The external high-accuracy current limit allows setting the current limit value by application. The device improves the system’s reliability by effectively clamping the inrush current under start-up or short-circuit conditions. The Texas Instruments TPS1HC100-Q1 device can be used as a high-side power switch for a wide variety of resistive, inductive, and capacitive loads, including low-wattage bulbs, LEDs, relays, solenoids, and heaters.

Features

Single-channel smart high-side power switch for 12V automotive systems with full diagnostics
- Open-drain status output
- Current sense analog output
Wide operating voltage 3V to 28V
Low standby current, < 0.5µA at 85°C
Operating junction temperature, –40 to 150°C
1.8V, 3.3V, and 5V logic compatible
Fault sense voltage scaling for ADC protection
Programmable current limit accuracy ±18% at 1.9A
High-accuracy current sense, ±6% at 1A
Protection
- Overload and short-circuit protection
- Inductive load negative voltage clamp
- Undervoltage Lockout (UVLO) protection
- Thermal shutdown and swing with self-recovery
- Loss of GND, loss of supply protection
- Reverse battery protection with external components

Diagnostic
- On- and off-state output open-load and short-to-battery detection
- Overload and short to ground detection
- Thermal shutdown and swing detection
Qualifications
- AEC-Q100 automotive-qualified for grade 1 temperature
- Functional Safety-Capable
- Documentation available to aid functional safety system design
- Tested according to AECQ100-12 Grade A, 1 million times short-to-GND test
- Electrical transient disturbance immunity certification of ISO7637-2 and ISO16750-2
14-pin thermally-enhanced PWP package

Applications

Automotive display module
ADAS modules
Seat comfort module

HVAC control module
Body control module

Texas Instruments TPS1HC100-Q1 Smart High-Side Switch

Features

Applications

Functional Block Diagram

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