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UC2852
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UC2852

  • Category:Audio amplifier
  • Product Name:High power factor preregulator
  • Manufacturers:TI
  • Production Batch Number:09+
  • Encapsulation:SOP16
  • Stock Status:There is stock
  • Stock Quantity:9000
  • Minimum order quantity: 1
  • Details:Click here to find a PDF of UC2852
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  • Product introduction
The UC1852 provides a low-cost solution for systems that would otherwise draw on AC power lines with high pulse peak currents to active power factor correction (PFC). The circuit implements zero-current switching Boost conversion, generating sinusoidal input current with minimal external components while maintaining peak current significantly lower than a fully continuous converter.

The UC1852 provides a large capacity on the control time to adjust the output DC voltage, a cutoff time defined by the boost inductor, zero current detection circuit, and restart the switching cycle switch. Even if both switching frequencies vary instantaneously with load and line voltage, it can be maintained within a reasonable range to minimize noise generation.

characteristic

 

 

  • Low-cost power factor correction
  • The power factor is greater than 0.99
  • The number of external parts required
  • PWM boost with controlled on-time
  • Zero current switch
  • Peak current limit
  • Minimum and maximum frequency limits
  • The start-up current is less than 1mA
  • The high-current FET drives the output
  • Undervoltage lockout

 

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