Description:AC/DC Converters 900V 225 mA (MDCM) 360 mA (CCM) Highly Energy Efficient Off-line Switcher IC with Integrated System Level Protection for Low Component-Count Power Supplies
The maximum output power of LNK3296P depends on the input voltage, output voltage, and other design parameters. However, Power Integrations recommends a maximum output power of 65W for universal input (90-265VAC) and 80W for high-line input (180-265VAC).
To ensure reliable start-up and operation, make sure to follow the recommended PCB layout and component placement guidelines, use a suitable input filter, and ensure that the input voltage is within the recommended range. Additionally, ensure that the output voltage is within the recommended range and that the output current is within the maximum rating.
The BYPASS pin is used to connect an external bypass capacitor to improve the power supply's noise immunity and electromagnetic compatibility (EMC). It is recommended to connect a 10nF to 100nF capacitor between the BYPASS pin and the primary side of the transformer.
To optimize the design for low standby power consumption, use a high-value resistor (e.g., 1MΩ) between the BYPASS pin and the primary side of the transformer, and ensure that the input voltage is within the recommended range. Additionally, consider using a low-standby-power controller or a specialized IC designed for low standby power consumption.
The recommended transformer specifications for LNK3296P include a turns ratio of 1:1.2 to 1:1.5, a primary inductance of 1.5mH to 3.5mH, and a magnetizing inductance of 10mH to 20mH. The transformer should also have a minimum of 1500VAC isolation and a maximum of 10% leakage inductance.
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