| CPC H02M 3/33571 (2021.05) [H02M 3/33576 (2013.01); H02M 7/219 (2013.01); H02M 7/5387 (2013.01); H02P 27/06 (2013.01)] | 20 Claims |
|
1. An isolated switching converter comprising an inverting bridge, a transformer, a rectifying bridge, and control circuitry, wherein:
the inverting bridge has an input that receives an input voltage and an output that delivers a voltage to a plurality of primary windings of the transformer, the inverting bridge comprising a plurality of half bridges cascaded across the input voltage, each half bridge comprising:
an input capacitor;
upper and lower switches coupled across the input capacitor and connected at a switch node; and
a DC blocking capacitor coupled between the switch node and a primary winding terminal of the transformer; and
the rectifying bridge has an input coupled to a plurality of secondary windings of the transformer and an output that delivers a voltage to an output of the isolated switching converter, the rectifying bridge comprising one or more rectifier switches; and
the control circuitry monitors one or more inverter feedback signals and generates in response thereto inverter drive signals that operate the upper and lower switches of the plurality of half bridges in a phase staggered manner and monitors one or more rectifier feedback signals and generates in response thereto rectifier drive signals that operate one or more switches of the rectifying bridge.
|