US 11,728,733 B2
Multi-input single-output circuit and control method thereof
Yunliang Ma, Hangzhou (CN); and Lingdong Zhang, Hangzhou (CN)
Assigned to Silergy Semiconductor Technology (Hangzhou) LTD, Hangzhou (CN)
Filed by Silergy Semiconductor Technology (Hangzhou) LTD, Hangzhou (CN)
Filed on Aug. 5, 2020, as Appl. No. 16/985,408.
Claims priority of application No. 201910753364.X (CN), filed on Aug. 15, 2019.
Prior Publication US 2021/0050788 A1, Feb. 18, 2021
Int. Cl. H02M 3/158 (2006.01); H02M 1/00 (2006.01); H02J 1/08 (2006.01)
CPC H02M 3/1584 (2013.01) [H02M 1/0016 (2021.05); H02J 1/082 (2020.01); H02M 1/0025 (2021.05)] 20 Claims
OG exemplary drawing
 
1. A multi-input single-output circuit, comprising:
a) a first circuit module configured to receive a first input voltage source, and comprising a first power switch;
b) a second circuit module configured to receive a second input voltage source, and comprising a switching power converter having a second power switch; and
c) a control circuit configured to adjust a reference voltage according to the first input voltage source to control an output voltage of the second circuit module when the first input voltage source supplies power for the first circuit module, the second input voltage source supplies power for the second circuit module, and the second circuit module operates prior to the first circuit module, thereby controlling the first circuit module to stop operating.