UBA2033TS View Datasheet(PDF) - Philips Electronics

Part Name

Description

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UBA2033TS

HF full bridge driver IC

Philips Electronics 

Philips Semiconductors

HF full bridge driver IC

Product specification

UBA2033

APPLICATION INFORMATION

Basic application

A basic full bridge configuration with an HID lamp is shown

in Fig.3. The bridge disable, the start-up delay and the

external drive functions are not used in this application.

The pins −LVS, +LVS, EXTDR and BD are short-circuited

to SGND. The internal oscillator is used and to realize a

50% duty cycle the internal divider function has to be used

by connecting pin DD to SGND. The IC is powered by the

high voltage supply. Because the internal oscillator is

used, the bridge commutating frequency is determined by

the values of Rosc and Cosc. The bridge starts oscillating

when the HV supply voltage exceeds the level of release

power drive (typically 12.5 V on pin HV). If the supply

voltage on pin HV drops below the reset level of power

drive (typically 10 V on pin HV), the UBA2033 enters the

start-up state.

handbook, full pagheigwhidtvholtage

550 V (max)

Ci

Rosc

C3

Cosc

−LVS 1

28 GHR

HR

R>100 Ω

EXTDR

2

27 FSR

+LVS 3

26 SHR

C1

HV

6

VDD

9

23 GLR

LR

R>100 Ω

SU UBA2033TS PGND

10

21

DD 11

GLL

20

BD

12

RC 13

SHL

17

16 FSL

C2

SGND 14

15 GHL

IGNITOR

GND

MBL459

HL

R>100 Ω

LL

R>100 Ω

Fig.3 Basic configuration.

2002 Oct 08

10

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