Datasheet > UBA20261

UBA20261

更新时间： 2024-02-07 08:32:01

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
32页	293K
描述
600 V and 350 V power IC for step dimmable CFLs

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UBA20261 数据手册

UBA20261/2

600 V and 350 V power IC for step dimmable CFLs

Rev. 2 — 10 October 2011

Product data sheet

1. General description

The UBA20261/2 are high-voltage power integrated circuits designed to drive and control

high powered self-ballasted Compact Fluorescent Lamp (CFL) lighting applications

operating at mains supply voltages of 120 V or 230 V. The IC includes a half-bridge power

circuit consisting of two NMOST power MOSFETs, an advanced feature for step dimming

and a lamp current controlled boost feature for boosting cold (amalgam) CFLs.

The controller contains a CFL half-bridge drive function, a high-voltage level-shift circuit

with integrated bootstrap diode, an oscillator function, a current control function for

preheat and burn, a timer function and protection circuits. The UBA20261/2 are supplied

using the dV/dt current charge supply circuit from the half-bridge circuit.

Remark: The mains voltages given in this data sheet are AC voltages.

2. Features and benefits

2.1 Half-bridge features

 UBA20261: two internal 350 V, 1 , maximum 5 A NMOST half-bridge power

MOSFETs

 UBA20262: two internal 600 V, 3 , maximum 2.7 A NMOST half-bridge power

MOSFETs

 Integrated high-voltage level-shifter 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

12 3 4 5 6 7...32

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