Delta Electronics, Inc.

Hung-Wen Chueh

Cheng-Yi Lin

Chun-Chih Chen

Teng-Ping Lin

An over temperature compensation control circuit is coupled to a conversion unit. The over temperature compensation control circuit includes a detection circuit, a temperature control resistor, and a comparison unit. The detection circuit provides a current signal responsive to an input voltage according to a voltage signal responsive to the input voltage of the conversion unit. The temperature control resistor generates a temperature control voltage according to the current signal. The comparison unit compares the temperature control voltage with a reference voltage to generate a control signal. The control signal represents whether a temperature of the conversion unit reaches an over temperature protection point.

Over temperature compensation control circuit

A power adapter comprises a main power circuit, a feedback circuit, an ID detection circuit and a switch controller. The feedback circuit is coupled to the main power circuit for detecting the DC output voltage and issuing a feedback signal. The ID detection circuit is coupled to the feedback circuit for detecting an ID signal from the DC-powered electronic device and issuing a control signal to the feedback circuit to disable or delay the feedback signal for a specific time period, and comparing a dropping slew rate of the DC output voltage with a preset value to issue a hiccup mode control signal. The switch controller is configured for controlling the operations of the main power circuit in response to the feedback signal and controlling the power adapter to operate in a normal operation mode or a hiccup mode in response to the hiccup mode control signal.

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Taoyuan, Taiwan

Hung-Wen Chueh