network and used as a PWM ramp signal. When the FB pin falls to the FB threshold a single on-time pulse for the high-side mosfet Q1 is triggered. • VFB falls below the 750mV reference. If this occurs, Q2 turns off and Q1 turns on for another high-side on-time. •...
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TPS652x provides one PWM buck controller, two adjustable, synchronous buck regulators, two independent USB power switches and a supply voltage supervisor (SVS) to provide main power functions for satellite set top boxes, xDSL and cable modem applications operating off a single 12- to 22-V ...