Details

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BUY VIPER20A https://www.utsource.net/itm/p/12612024.html

Parameter	Description	Value
Input Voltage (VIN)	Range of input voltage	17V to 400V AC/DC
Output Power (POUT)	Maximum continuous output power	20W
Switching Frequency (fSW)	Typical switching frequency	65kHz
Quiescent Current (IQ)	Quiescent current at no load	1.5mA
Efficiency (畏)	Typical efficiency at full load	85%
Thermal Shutdown (TSD)	Thermal shutdown temperature	150掳C
Protection Features	Overload, overvoltage, and short-circuit protection	Yes
Package Type	Package type	DIP-8
Operating Temperature (Toper)	Operating temperature range	-40掳C to +125掳C

Instructions for Using VIPER20A

1. Circuit Design:

   • Ensure that the input voltage is within the specified range (17V to 400V AC/DC).
   • Design the transformer and other components to handle the maximum output power of 20W.
   • Use a suitable snubber circuit to reduce EMI and protect the switch.

2. Component Selection:

   • Choose a primary winding inductance that ensures stable operation at the typical switching frequency of 65kHz.
   • Select a secondary winding and rectifier diode that can handle the output current and voltage requirements.
   • Use a filter capacitor on the output to smooth the DC voltage.

3. Thermal Management:

   • Place the VIPER20A in a location with adequate airflow to prevent overheating.
   • Monitor the temperature to ensure it does not exceed 150掳C, which could trigger thermal shutdown.

4. Protection:

   • The VIPER20A includes built-in overload, overvoltage, and short-circuit protection. Ensure that these features are utilized by designing the circuit to respond appropriately to fault conditions.

5. Testing and Debugging:

   • Test the power supply under various load conditions to verify its performance and stability.
   • Check the quiescent current to ensure it is within the specified range of 1.5mA at no load.
   • Measure the efficiency to confirm it meets the typical value of 85% at full load.

6. Safety:

   • Follow all relevant safety standards and guidelines when designing and testing the power supply.
   • Use appropriate insulation and isolation techniques to prevent electrical shock.

By following these parameters and instructions, you can effectively design and implement a power supply using the VIPER20A.

(For reference only)