Datasheet > UBA2211ATN1

UBA2211ATN1

更新时间： 2024-01-03 05:50:54

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
19页	166K
描述
Half-bridge power IC family for CFL lamps

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UBA2211ATN1 数据手册

UBA2211

Half-bridge power IC family for CFL lamps

Rev. 2 — 3 January 2011

Objective data sheet

1. General description

The UBA2211 family of integrated circuits are a range of high voltage monolithic ICs for

driving Compact Fluorescent Lamps (CFL) in half-bridge configurations. The family is

specifically designed to provide easy integration of lamp loads across a range of burner

power and mains voltages.

Patented technologies and integrated protection types:

• Preheat state:

– Preheat applications: Adjustable current controlled preheat mode technology

enables the preheat time (t_ph) and preheat current to be set. This mode is triggered

during start up.

– Non-preheat applications: Glow-time control minimizes electrode damage just after

ignition of the lamp.

• Saturation Current Protection (SCP): This protection is active during ignition

ensuring the lamp inductor can operate at the saturation current limit without

exceeding the current ratings of the integrated half-bridge power transistors.

• RMS current control: The IC internally calculates the RMS current and changes the

frequency (f_osc) to ensure the RMS current remains constant. RMS current control is

active in the burn state ensuring a constant half-bridge burner current and IC

dissipation. The nominal half-bridge burner current is set using the sense resistor

(R_SENSE).

• OverTemperature Protection (OTP) and Capacitive Mode Protection (CMP):

Overtemperature and capacitive mode protection monitor the application ensuring, in

non-standard conditions, correct system shutdown and a safe condition at the

burner’s end-of-life.

2. Features and benefits

2.1 System integration

Integrated half-bridge power transistors

UBA2211A: 220 V mains; 13.5 Ω; 0.9 A maximum ignition current

UBA2211B: 220 V mains; 9 Ω; 1.35 A maximum ignition current

UBA2211C: 220 V mains; 6.6 Ω; 1.85 A maximum ignition current

Integrated bootstrap diode

Integrated high voltage supply

12 3 4 5 6 7...19

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