Patent ID: 8976543
Filing Date: 2015-03-10
Classification: H02M

Abstract:
1. A circuit, comprising: a full-bridge DC-to-DC converter circuit, comprising at least two transistor pairs, coupled to a transformer for converting a first voltage level to a second voltage level; a sensing circuit coupled to the transformer for sensing a size of a load current coupled to the transformer; and a digital feedback circuit coupled to the full-bridge converter and to the sensing circuit for outputting control signals for adjusting a rate at which the full-bridge converter is switched based on a signal received from the sensing circuit, the digital feedback circuit including an analog-to-digital converter for converting an analog signal received from the sensing circuit to a digital signal, and a complex programmable logic device for receiving the digital signal and for determining a delay time using a look-up table storing delay times corresponding to multi-bit representations of voltages; wherein the control signals are output based on the determined delay time in a manner so as to prevent the transistor pairs from being in a concurrently active state.