US 11,705,824 B2
Simple stabilization of half-bridge converter over its operating temperatures
Gerald Ezekwem, Milton Keynes (GB); and Alireza Harrasi, Milton Keynes (GB)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Aug. 27, 2021, as Appl. No. 17/459,208.
Application 17/459,208 is a continuation of application No. 16/814,294, filed on Mar. 10, 2020, granted, now 11,133,748.
Application 16/814,294 is a continuation of application No. PCT/GB2018/052579, filed on Sep. 11, 2018.
Claims priority of application No. 1714659 (GB), filed on Sep. 12, 2017.
Prior Publication US 2021/0391798 A1, Dec. 16, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H02M 3/338 (2006.01); H02M 1/32 (2007.01); H02M 3/335 (2006.01)
CPC H02M 3/338 (2013.01) [H02M 1/32 (2013.01); H02M 3/33571 (2021.05); H02M 1/327 (2021.05)] 17 Claims
OG exemplary drawing
 
1. A DC-DC converter, comprising:
a first feedback winding;
a second feedback winding, wherein the first and the second feedback windings are arranged to be out of phase with respect to each other;
a drive circuit including:
first and second switches;
a first capacitor coupled with the first switch; and
a second capacitor coupled with the second switch;
a first thermal regulating component coupled to the first switch and including a first thermistor and a first resistor connected in parallel; and
a second thermal regulating component coupled to the second switch and including a second thermistor and a second resistor connected in parallel; wherein
the first switch is coupled to the first feedback winding, and the second switch is coupled to the second feedback winding;
the drive circuit produces an oscillating signal by discharging the first and second capacitors alternately to energize the first and second switches;
a discharging of the first and the second capacitors is determined by electromagnetic induction in the first and second feedback windings; and
the first and the second thermal regulating components regulate the switching frequency of the first and the second switches over an operating temperature range of the DC-DC converter.