65W Laptop Power Adapter Circuit Diagram
The schematic in Figure 1 depicts a notebook adapter power supply employing the Power Integrations® TOPSwitch®-HX TOP258EN off-line switcher in a fl yback configuration. This power supply operates from a universal input to provide a 19 V, 65 output capable of operation in a sealed enclosure at an ambient temperature of up to 40 °C. The TOP258EN (U1) has an
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