UBA2032T PHILIPS [NXP Semiconductors], UBA2032T Datasheet - Page 12

• Manufacturer Part Number: UBA2032T
• Description: Full bridge driver IC
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
APPLICATION INFORMATION
Basic application
A basic full bridge configuration with an HID lamp is shown
in Fig.5. 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 realise 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
2002 Oct 07
handbook, full pagewidth
Full bridge driver IC
high voltage
550 V (max)
GND
C i
C 3
C osc
R osc
EXTDR
SGND
V DD
LVS
LVS
HV
SU
DD
BD
RC
1
2
3
5
7
8
9
10
11
12
UBA2032T
Fig.5 Basic configuration.
24
23
22
20
18
17
15
14
13
PGND
GHR
FSR
SHR
GLR
GLL
SHL
FSL
GHL
12
C 2
C 1
R >100
R >100
used, the bridge commutating frequency is determined by
the values of R
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 UBA2032 enters the
start-up state.
HR
LR
MGU546
osc
IGNITOR
and C
osc
. The bridge starts oscillating
HL
LL
Preliminary specification
R >100
R >100
UBA2032