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UCC29910A Datasheet Buck PFC Controller

Manufacturer: Texas Instruments

Overview: UCC29910A www.ti.com Buck PFC Controller Check for Samples: UCC29910A SLUSAK8A – MAY 2011 – REVISED JUNE.

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General Description

The UCC29910A Buck Power Factor Correction (PFC) controller provides a relatively flat high-efficiency performance across universal line for designers requiring a high power factor (>0.9) and wishing to meet the requirements of IEC 61000-3-2.

Based on a buck topology, inherent inrush current limiting eliminates the need for additional components.

With a typical bus voltage of 84 V, the topology is ideally suited for use with low voltage stress downstream regulation/isolation power trains, such as half-bridge stages controlled by the UCC29900, (Texas Instruments Literature Number, SLUS923).

Key Features

  • 1.
  • Buck Power Factor Correction for High Efficiency Across Line.
  • Low Off-Line Startup Current, With SmartStart Algorithm for Fast Startup With Soft-Start.
  • Compatible With Resistive or Pass Transistor Fed Startup from the AC Line.
  • Low Power SmartBurst Mode for Standby and Light-Load Conditions.
  • Current Sense Inputs for PFC control and Overload Protection.
  • Line Sense UVLO.
  • Sense and Drive Control for External Startup Depletion Mode FET.

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