UCC29910A Texas instruments

UCC29910A

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UCC29910A

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Описание

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). This combination offers low common-mode noise generation allowing reduced filtering and exceptionally high conversion efficiency. The UCC29910A incorporates AC line UVLO and controlled soft start for fast start-up. Enhanced light-load efficiency is achieved through advanced management algorithms for best-in-class no-load and light-load performance.

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
Latching Fault Input Pin

Topology	Buck
Control mode	CCM
Switching frequency (max) (kHz)	100
UVLO thresholds on/off (V)	2.53/1.85
Vin (max) (V)	3.6
Features	Average current mode, Continuous Control Mode, Enable, OVP
Rating	Catalog
Operating temperature range (°C)	-40 to 85
Duty cycle (max) (%)	90