9.1 Application Information

The TPS61088-Q1 is designed for outputting voltage up to 12.6 V with 11-A switch current capability to deliver more than 20-W power. The TPS61088-Q1 operates at a quasi-constant frequency pulse-width modulation (PWM) in moderate to heavy load condition. In light load condition, the converter can either operate in the PFM mode or in the forced PWM mode according to the mode selection. The PFM mode brings high efficiency over entire load range, but the PWM mode can avoid the acoustic noise as the switching frequency is fixed. The converter uses the adaptive constant off-time peak current control scheme, which provides excellent transient line and load response with minimal output capacitance. The TPS61088-Q1 can work with different inductor and output capacitor combination by external loop compensation. It also supports adjustable switching frequency ranging from 200 kHz to 2.2 MHz.