UBA20272 - NXP Semiconductors

UBA20272 (UBA20271 / UBA20272) 350 V and 600 V Power ICs

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. In addition, a controller circuit is included that has advanced features for dimming a.

Features

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 .