UBA20272 Datasheet | NXP Semiconductors

description The UBA20271/2 are high-voltage power ICs intended to drive and control higher powered self ballasted pact 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 and a lamp current controlled boost feature . The boost feature is used for boosting cold (amalgam) CFL. The controller contains a half-bridge drive function for CFL, a high-voltage level-shift circuit with integrated bootstrap diode. In addition, the controller contains an oscillator function, a current control function both for preheat and burn, a timer function and protection circuits. The UBA20271/2 are supplied via a d V/dt current charge supply circuit from the half-bridge circuit. Remark: Mains voltages noted are AC. 2. 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 - - - - - 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 - http://..net/ .Data Sheet.co.kr NXP Semiconductors UBA20271/2 350 V and 600 V Power ICs for dimmable pact fluorescent lamps - Natural dimming curve by logarithmic correction - Adjustable Minimum Dimming Level (MDL) - Controlled lamp ON/OFF 2.5 Protection - - - - - Over Current Protection (OCP) in boost and burn state Capacitive Mode Protection (CMP) Over Power...