Driver or library
HCS-SMARTFUSE-DRIVERS — Simple C drivers and code examples for HCS smart fuse devices
Simple C drivers and code examples for HCS smart fuse devices
TPS2HCS08-Q1
Automotive, dual-channel 8mΩ smart high-side switch with I2T wire protection, low IQ mode and SPI
Data sheet
TPS2HCS08-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to 125°C
- Device HBM ESD classification level 2
- Device CDM ESD classification level C5
- Withstands 36V load dump
- Dual-channel SPI controlled smart high-side switch with integrated nFETs.
- Integrated wire-harness protection without MCU involvement and a SPI programmable fuse curve
- Protection against persistent overload condition
- Improve system level reliability through SPI programmable adjustable overcurrent protection
- SPI configurable capacitive charging mode to drive a wide range of capacitive input ECUs load current needs.
- Low quiescent current, low power ON-state to supply always-ON loads with automatic wake on load current increase with wake signal to MCU
- Robust integrated output protection:
- Integrated thermal protection
- Protection against short-to-ground
- Protection against reverse battery events including automatic switch on of FET with reverse supply voltage
- Automatic shut off on loss of battery and ground
- Integrated output clamp to demagnetize inductive loads
- Digital sense output via SPI can be configured to measure:
- Load current accurately with integrated ADC
- Output or supply voltage, FET temperature
- Provides full fault diagnostics through SPI interface and indication through FLT pin
- Detection of open load and short-to-battery
The TPS2HCS08-Q1 device is a dual channel, smart high-side switch controlled through a serial peripheral interface (SPI) and is intended for power distribution and actuator drive applications. The device integrates robust protection to ensure output wire and load protection against short circuit or overload conditions. The device features overcurrent protection configurable via SPI with sufficient flexibility to support loads that require large inrush currents and provide improved protection. The device also integrates a programmable fuse profile (current versus time) that turns off the switch under persistent overload condition. The two features together allow optimization of the wire harness for any load profile with full protection.
The device supports a SPI-configurable capacitive charging mode for ECU loads in power distribution switch applications. The device also includes two low power mode (LPM) states, an auto entry mode or a manual entry mode, that enables the device to provide current to the load ECU while only consuming about 10–20µA of current.
The TPS2HCS08-Q1 device also provides a high accuracy digital current sense over SPI that allows for improved load diagnostics. By reporting load current and the channel output voltage and output FET temperature to a system MCU, the device enables diagnosis of switch and load failures.
The TPS2HCS08-Q1 is available in a HTSSOP package which allows for reduced PCB footprint.
Technical documentation
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View all 8 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS2HCS08-Q1 8.9mΩ , Automotive Dual-Channel , SPI Controlled High-Side Switch With Integrated I2T Wire Protection and Low Power Mode datasheet | PDF | HTML | 15 May 2025 |
| White paper | 軟體定義車輛將汽車電子的未來推入正軌 (Rev. B) | PDF | HTML | 29 Jan 2025 | |
| White paper | 차량용 전자장치의 미래를 바꾸는 소프트웨어 정의 차량 (Rev. B) | PDF | HTML | 29 Jan 2025 | |
| White paper | Software-Defined Vehicles Shift the Future of Automotive Electronics Into Gear (Rev. B) | PDF | HTML | 21 Jan 2025 | |
| Application brief | Reducing System Bill of Materials and MCU Pin Requirements With SPI eFuse Switches (Rev. A) | PDF | HTML | 30 Sep 2024 | |
| Technical article | eFuse 如何協助推動軟體定義車輛的區域架構革命 | PDF | HTML | 17 May 2024 | |
| Technical article | eFuse가 소프트웨어 정의 차량의 영역 아키텍처 혁신을 이끄는 방법 | PDF | HTML | 16 May 2024 | |
| Technical article | How eFuses are helping drive the zone architecture revolution for software-defined vehicles | PDF | HTML | 13 May 2024 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
HSS-HCMOTHERBRDEVM — Smart fuse evaluation module
The HSS-HCMOTHERBRDEVM and corresponding daughter cards (such as the HSS-2HCS10EVM) are used to showcase and evaluate all features of the Texas Instruments' smart fuse high-side switch portfolio. The motherboard is designed to be used with several different daughter cards enabling the use of a (...)
Daughter card
HSS-HCS-BLANKEVM — Unpopulated evaluation module for smart fuse switch portfolio
The HSS-HCS-BLANKEVM is a daughtercard designed to be used with the HSS-HCMOTHERBRDEVM. This daughtercard shows the functionality of our smart fuse portfolio.
Support software
HCS-HEADER-FILES — C Header files for smart fuse high-side switches with register definitions
C header files for smart-fuse high-side switches with register definitions
Supported products & hardware
Products
High-side switches
Hardware development
Evaluation board
Daughter card
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs
TIDA-020079 — Zone reference design
This reference design demonstrates key functions of next-generation zone control modules including power distribution, load actuation and in-vehicle networking. The design highlights functional safety-compliant PMIC and microcontroller (MCU) design, redundant power supply management with ideal (...)
Design guide: PDF
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HTSSOP (PWP) | 16 | Ultra Librarian |
Ordering & quality
Information included:
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- Lead finish/Ball material
- MSL rating/Peak reflow
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Information included:
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Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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