The TPS1211x-Q1 family is a 45-V smart high-side driver with protection and diagnostics. The TPS1211x-Q1 device controls external N-channel MOSFETs and its drive architecture is suitable to drive back-to-back N-Channel MOSFETs. The strong gate 3.7-A peak source and 4-A peak sink capabilities enable switching parallel MOSFETs in high current applications such as circuit breaker in powertrain (DC/DC converter), driving loads in power distribution unit, electric power steering, driving PTC heater loads, and so forth. The TPS1211x-Q1 device provides two-level, adjustable, overcurrent protection with adjustable circuit breaker timer, fast short-circuit protection, accurate analog current monitor output, and remote overtemperature protection.

The variant TPS12111-Q1 features a separate precharge driver (G) with independent control input (INP_G). This feature enables system designs that must precharge the large output capacitance before turning ON the main power path.

The following design procedure can be used to select the supporting component values based on the application requirement. Additionally, a spreadsheet design tool TPS1211-Q1 Design Calculator is available in the web product folder.