NXP Semiconductors UBA20271
The UBA20271/2 are high-voltage power ICs intended to drive and control higher powered self ballasted Compact Fluorescent Lamp (CFL) lighting applications. The UBA20271/2 operate from 120 V and 230 V. The module includes a half-bridge power circuit of two NMOST power FETs.FEATURES AND BENEFITS
2.1 Half-bridge features● UBA20271: Two internal 350 V, 1.0 max 5.0 A NMOST half-bridge power FETs
● UBA20272: Two internal 600 V, 3.0 , max 2.7 A NMOST half-bridge power FETs
● Integrated high-voltage level-shift function with integrated bootstrap diode 2.2 Preheat and ignition features
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● Coil saturation protection during ignition Adjustable saturation protection level Adjustable preheat time Adjustable preheat current Ignition lamp current detection 2.3 Lamp boost features
● Adjustable boost timing
● Fixed boost current ratio of 1.5
● Gradually boost to burn transition timing 2.4 Dim features
● Continuously variable dimming function for standard phase cut dimmers Datasheet pdf - NXP Semiconductors UBA20271/2 350 V and 600 V Power ICs for dimmable compact fluorescent lamps
● Natural dimming curve by logarithmic correction
● Adjustable Minimum Dimming Level (MDL)
● Controlled lamp ON/OFF 2.5 Protection
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● OverCurrent Protection (OCP) in boost a...