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US 2026/0299662 A1Published application
Switching mode power supply with reduced bulk capacitance
AssigneeMonolithic Power Systems, Inc.
InventorsJian Jiang, Di Han, Rafael Alloza Lahoz, Enric Rodriguez Vilamitjana
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Abstract
A switching mode power supply with reduced bulk capacitance is discussed. The switching mode power supply receives an AC input voltage to power a load via a first power converter and a second converter. If the AC input voltage is dropped, a capacitor is discharged via an auxiliary circuit to continue power the second power converter by stepping up a voltage across the capacitor.
Claims20
A switching mode power supply, comprising:
- an input port, configured to receive an input voltage;
- a first power converter, configured to convert the input voltage to an intermediate voltage;
- a second power converter, configured to convert the intermediate voltage to an output voltage to power a load;
- a first capacitor, coupled between the intermediate voltage and a reference ground;
- a second capacitor, coupled to the intermediate voltage via an auxiliary circuit;
- and
- a control circuit, configured to control the auxiliary circuit in response to the intermediate voltage and a voltage across the second capacitor.
4 more elements
A switching mode power supply, comprising:
- a power converter, configured to convert an intermediate voltage to an output voltage when an input voltage is plugged;
- an auxiliary circuit, coupled to the intermediate voltage to provide an auxiliary voltage;
- and
- a control circuit, configured to control the auxiliary circuit in response to the intermediate voltage and the auxiliary voltage.
1 more element
A switching mode power supply, comprising:
- a power converter, configured to convert an input voltage to an intermediate voltage;
- an auxiliary circuit, coupled to the intermediate voltage to provide an auxiliary voltage;
- and
- a control circuit, configured to control the auxiliary circuit in response to the intermediate voltage and the auxiliary voltage.
1 more element
Dependencies are inferred from the claim text.