UBA2032T PHILIPS [NXP Semiconductors], UBA2032T Datasheet - Page 14

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

Philips Semiconductors
Car headlight application
The life of an HID lamp depends of the rate of sodium
migration through the quartz wall of the lamp. To minimize
this, the lamp must operate negative with respect to the
system ground. Figure 5 shows a full bridge with an HID
lamp for a car headlight application, along with a control
2002 Oct 07
handbook, full pagewidth
Full bridge driver IC
system
GND
C i
high voltage
450 V (max)
C 3
CONTROL
EXTDR
BRIDGE
SGND
UNIT
V DD
LVS
LVS
HV
SU
DD
BD
RC
10
11
12
13
14
1
2
3
6
9
UBA2032TS
low voltage supply
Fig.7 Car headlight application.
28
27
26
23
21
20
17
16
15
PGND
GHR
FSR
SHR
GLR
GLL
SHL
FSL
GHL
14
C 2
R >100
R >100
C 1
circuit referenced to the system ground and with a bridge
voltage operating at high negative voltages with respect to
the system ground. Pin +LVS and HV can be connected to
the same supply as the control unit The output state of the
bridge is related to the position of pin EXTDR. See also the
timing diagram.
HR
LR
IGNITOR
HL
LL
Preliminary specification
R >100
R >100
UBA2032
MGU803