US 12,438,454 B2
Millimeter wave-based switching power supply
Cheng Li, Shenzhen (CN); and Weinian Liang, Shenzhen (CN)
Assigned to DECO LNTEGRATION TECHNOLOGY CO., LIMITED, Shenzhen (CN)
Filed by DECO INTEGRATION TECHNOLOGY CO., LIMITED, Shenzhen (CN)
Filed on Aug. 22, 2023, as Appl. No. 18/453,982.
Application 18/453,982 is a continuation of application No. PCT/CN2023/089745, filed on Apr. 21, 2023.
Claims priority of application No. 202222682491.5 (CN), filed on Oct. 12, 2022.
Prior Publication US 2024/0128862 A1, Apr. 18, 2024
Int. Cl. H02M 3/335 (2006.01); H02M 1/00 (2007.01); H02M 1/44 (2007.01); H02M 3/00 (2006.01)
CPC H02M 3/015 (2021.05) [H02M 1/0025 (2021.05); H02M 1/44 (2013.01); H02M 3/33523 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A millimeter wave-based switching power supply, comprising an input voltage circuit, an upper bridge inductor-inductor-capacitor (LLC) circuit and a lower bridge LLC circuit of a primary winding of a transformer, a millimeter wave switch control chip, and an output voltage circuit, wherein
the upper bridge LLC circuit comprises a first capacitor C1, an inductor L1, and an input end and an output end of the millimeter wave switch control chip; and the lower bridge LLC circuit includes a second capacitor C2, the inductor L1, and the output end and an earthing terminal of the millimeter wave switch control chip;
an output end of the input voltage circuit is respectively connected to a first end of the first capacitor C1 and the input end of the millimeter wave switch control chip;
the output end of the millimeter wave switch control chip is connected to a first end of the inductor L1;
a second end of the inductor L1 is connected to a first end of the primary winding of the transformer;
a second end of the first capacitor C1 is respectively connected to a first end of the second capacitor C2 and a second end of the primary winding of the transformer; and
a second end of the second capacitor C2 and the earthing terminal of the millimeter wave switch control chip are respectively connected to ground;
wherein the millimeter wave switch control chip comprises an input logic control circuit, a millimeter wave isolator chip, an upper bridge drive circuit, a lower bridge drive circuit, an upper bridge switch Q1, and a lower bridge switch Q2;
a first input end of the input logic control circuit is connected to an input of a first pulse width modulation signal PWM1, a second input end thereof is connected to an input of a logic control signal Logic, and a third input end thereof is connected to an input of a second pulse width modulation signal PWM2;
a first output end of the input logic control circuit is connected to a first input end of the millimeter wave isolator chip, and a second output end thereof is connected to a second input end of the millimeter wave isolator chip;
a first output end of the millimeter wave isolator chip is connected to an input end of the upper bridge drive circuit, and a second output end thereof is connected to an input end of the lower bridge drive circuit;
an output end of the upper bridge drive circuit is connected to an input end of the upper bridge switch Q1;
an output end of the lower bridge drive circuit is connected to an input end of the lower bridge switch Q2;
a first output end of the upper bridge switch Q1 is connected to the input end of the millimeter wave switch control chip;
a second output end of the upper bridge switch Q1 is respectively connected to a first output end of the lower bridge switch Q2 and the output end of the millimeter wave switch control chip; and
a second end of the lower bridge switch Q2 is connected to the earthing terminal of the millimeter wave switch control chip.