Texas Instruments TPS2HCS10-Q1 Dual-Channel Smart High-Side Switch is controlled through a serial peripheral interface (SPI) and is intended for power distribution and actuator drive applications. The device incorporates robust protection to safeguard the output wire and load against short circuits or overload conditions. The device features overcurrent protection that is configurable via SPI, providing sufficient flexibility to support loads that require large inrush currents and offering improved protection. The device also features a programmable fuse profile (current versus time), which automatically turns off the switch under persistent overload conditions. The two features together enable the optimization of the wire harness for any load profile, providing full protection. The Texas Instruments TPS2HCS10-Q1 supports a SPI-configurable capacitive charging mode for electronic control unit (ECU) loads in power distribution switch applications. The device also includes two low-power mode (LPM) states, an auto-entry mode, and a manual-entry mode, which enable the device to provide current to the load ECU while consuming only about 10–20µA of current. The device also provides high-accuracy digital current sensing over SPI, allowing 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 TPS2HCS10-Q1 is available in an HTSSOP package, which allows for a reduced PCB footprint.
