The TPS61372 is a highly-integrated synchronous boost converter to support 16-V output with load disconnect and short protection built-in. The TPS61372 supports input voltage ranging from 2.5 V to 5.5 V. The TPS61372 uses the peak current mode with adaptive off-time control topology to regulate the output voltage. The TPS61372 operates at a quasi-constant frequency pulse-width modulation (PWM) at moderate to heavy load current. At the beginning of each cycle, the low-side FET turns on and the inductor current ramps up to reach a peak current determined by the output of the error amplifier (EA). When the peak current pre-set value determined by the output trips of the EA, the low-side FET turns off. As long as the low-side FET turns off, the high-side FET turns on after a short delay time to avoid the shoot through. The duration of low-side FET off state is determined by the V_IN / V_OUT ratio.

High efficiency is achieved at light load as the TPS61372 operates in PFM operation. The device can be also configured at forced PWM mode to keep the frequency constant across the whole load range and to have more immunity against noise sensitive applications.