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UBA20272

NXP Semiconductors
Part Number UBA20272
Manufacturer NXP Semiconductors
Description (UBA20271 / UBA20272) 350 V and 600 V Power ICs
Published Feb 28, 2012
Detailed Description www.DataSheet.co.kr UBA20271/2 350 V and 600 V Power ICs for dimmable compact fluorescent lamps Rev. 2.1 — 12 October 2...
Datasheet PDF File UBA20272 PDF File

UBA20272
UBA20272

Overview
www.
DataSheet.
co.
kr UBA20271/2 350 V and 600 V Power ICs for dimmable compact fluorescent lamps Rev.
2.
1 — 12 October 2011 Product data sheet 1.
General description 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 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 dV/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://www.
DataSheet4U.
net/ www.
DataSheet.
co.
kr NXP Semiconductors UBA20271/2 350 V and 600 V Power ICs for dimmable compact fluorescent lamps  Natural dimming curve by logarithmic correction  Adjustable Min...


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