US 12,738,846 B2Granted

Power supply and operating method thereof

AssigneeDelta Electronics, Inc.

InventorsHsieh-Hsiung Cheng, Te-Chih Peng, Ming-Hsiang Lo, Chao-Fong Chang

Life of this patent

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Abstract

A power supply is provided. The power supply includes a conversion circuit, an auxiliary power supply circuit, a detection circuit and a control circuit. The conversion circuit generates an output voltage according to an input voltage to power a load. The auxiliary power supply circuit generates an auxiliary voltage according to the input voltage. The control circuit estimates an output power of the power supply. The output power includes a load output power of the conversion circuit and an auxiliary output power of the auxiliary power supply circuit. When at least one of the input voltage, the output power and the environment temperature increases, the control circuit configures the conversion circuit to increase the output voltage correspondingly. When at least one of the input voltage, the output power and the environment temperature decreases, the control circuit configures the conversion circuit to decrease the output voltage correspondingly.

Claims14

Dependent claims

A power supply, comprising:

a conversion circuit, configured to generate an output voltage according to an input voltage to power a load;
an auxiliary power supply circuit, configured to generate an auxiliary voltage according to the input voltage;
a detection circuit, configured to measure an environment temperature;
and
a control circuit, coupled to the conversion circuit, the auxiliary power supply circuit and the detection circuit, and configured to estimate an output power of the power supply,
wherein the output power comprises a load output power of the conversion circuit and an auxiliary output power of the auxiliary power supply circuit,
wherein when at least one of the input voltage, the output power and the environment temperature increases, the control circuit configures the conversion circuit to increase the output voltage correspondingly, and when at least one of the input voltage, the output power and the environment temperature decreases, the control circuit configures the conversion circuit to decrease the output voltage correspondingly,
wherein the control circuit estimates an input power of the power supply;
the control circuit configures the auxiliary power supply circuit to increase the auxiliary voltage;
when an efficiency ratio value of the output power to the input power increases after the auxiliary voltage is increased, the control circuit configures the auxiliary power supply circuit to increase the auxiliary voltage again;
and when the efficiency ratio value decreases after the auxiliary voltage is increased, the control circuit configures the auxiliary power supply circuit to decrease the auxiliary voltage.

8 more elements

An operating method of a power supply, wherein the power supply comprises a conversion circuit, an auxiliary power supply circuit, a detection circuit and a control circuit, the control circuit is coupled to the conversion circuit, the auxiliary power supply circuit and the detection circuit, and the operating method comprises:

configuring the conversion circuit to generate an output voltage according to the input voltage to power a load;
configuring the auxiliary power supply circuit to generate an auxiliary voltage according to the input voltage;
configuring the detection circuit to measure an environment temperature;
configuring the control circuit to estimate an output power of the power supply, wherein the output power comprises a load output power of the conversion circuit and an auxiliary output power of the auxiliary power supply circuit;
and
when at least one of the input voltage, the output power and the environment temperature increases, configuring the conversion circuit to increase the output voltage correspondingly, and when at least one of the input voltage, the output power and the environment temperature decreases, configuring the conversion circuit to decrease the output voltage correspondingly,
wherein the operating method further comprises:
configuring the control circuit to estimate an input power of the power supply;
configuring the auxiliary power supply circuit to increase the auxiliary voltage;
when an efficiency ratio value of the output power to the input power increases after the auxiliary voltage is increased, configuring the auxiliary power supply circuit to increase the auxiliary voltage again;
and
when the efficiency ratio value decreases after the auxiliary voltage is increased, configuring the auxiliary power supply circuit to decrease the auxiliary voltage.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/808,902Filed 19 Aug 2024
Priority: CN 202410607402.116 May 2024
Published: US 2025/0357860 A120 Nov 2025
Granted: 15 Sep 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H02M 3/158
With automatic control of output voltage or current, e.g. switching regulators: including plural semiconductor devices as final control devices…
H02M 1/0016
Details of control, feedback or regulation circuits: control circuits providing compensation of output voltage deviations using feedforward of…
H05K 7/20209
Using a gaseous coolant in electronic enclosures: thermal management, e.g. fan control
H05K 7/20909
For power electronics, e.g. for inverters for controlling motor: forced ventilation, e.g. on heat dissipaters coupled to components