Patent ID: 9312746
Filing Date: 2016-04-12
CPC Classification: H02M,Y02B

Claim Text:
1. A DC to DC converter system, comprising: gate control circuitry including inverter circuitry having a first and a second switch, the gate control circuitry further configured to generate a first and a second gate control signals configured to open and close the first and the second switch, respectively, and generate an AC signal from a DC input signal; a transformer configured to transform the AC signal; a second stage configured to rectify the AC signal to a DC output signal; current controlled oscillator circuitry configured to sequentially charge and discharge a pulse frequency modulated capacitor (PFMcap) such that the voltage (VCT) of PFMcap oscillated between a high voltage threshold (VTH) and a low voltage threshold (VTL) in a triangular waveform; and soft start control circuitry configured to generate a signal to delay a closing of the first switch during an initial portion (Td) of a first cycle of the first switch based on the VCT signal, a clock signal (CLK), and a run signal (RUN), the soft start control circuitry including a timing block configured to generate an initialization signal (INITIALIZE) for a predetermined amount of time (Ti) upon startup of the DC to DC converter system, the timing block further configured to generate the RUN signal after Ti.