TPS40192 and TPS40193 are cost-optimized synchronous buck controllers that operate from 4.5 V to 18 V input. These controllers implement a voltage-mode control architecture with the switching frequency fixed at either 600 kHz (TPS40192) or 300 kHz (TPS40193). The higher switching frequency facilitates the use of smaller inductor and output capacitors, thereby providing a compact power-supply solution. An adaptive anti-cross conduction scheme is used to prevent shoot through current in the power FETs.

• Input Operating Voltage Range: 4.5 V to 18 V
• Up to 20-A Output Currents
• Supports Pre-Biased Outputs
• 0.5%, 591-mV Reference
• 600 kHz (TPS40192) and 300 kHz (TPS40193) Switching Frequencies
• Three Selectable Thermally Compensated Short-Circuit Protection Levels
• Hiccup Restart from Faults
• Internal 5-V Regulator
• High-Side and Low-Side FET RDS(on) Current Sensing
• 10-Pin 3 mm × 3 mm SON Package
• Internal 4-ms Soft-Start Time
• Thermal Shutdown Protection at 145°C