UM10525
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1 — 19 April 2012
3 of 21
NXP Semiconductors
UM10525
120 V 20 W CFL demo board using the UBA2212
1. Introduction
The UBA2212 series is a family of high voltage monolithic integrated circuits for driving
Compact Fluorescent Lamps (CFL) in half-bridge configurations. It is derived from the
UBA2211 IC and modified to drive a 120 V (AC) application. The UBA2212 contains a
boost feature, which boosts the lamp current for a certain time after ignition. This feature
results in faster CFL warm-up and more light after ignition.
Run-up time is one of the key requirements for CFL. Normally, it is measured from the
time lamp was powered until 80 % of light output is reached. Run-up time is long if a high
temperature amalgam burner is used or a lamp is ignited in cold environment. The
UBA2212 is designed to meet the needs of these situations in both indoor and outdoor
applications.
In addition to the boost feature, the UBA2212 has the following features:
•
Fixed frequency preheat with an adjustable preheat time
•
RMS current control
•
Saturation Current Protection (SCP)
•
OverTemperature Protection (OTP)
•
Capacitive Mode Protection (CMP)
This user manual is intended to describe a 120 V, 20 W application demo board using the
UBA2212CT. See the
UBA2212 data sheet
for the functional description of this IC.
