L6382D Datasheet, PDF (1/14 Pages) STMicroelectronics – Power management unit for microcontrolled ballast

L6382D
POWER MANAGEMENT UNIT FOR MICROCONTROLLED
BALLAST
1 FEATURES
■ INTEGRATED HIGH-VOLTAGE START-UP
■ 4 DRIVERS FOR PFC, HALF-BRIDGE & PRE-
HEATING MOSFETS
■ 3.3V MICROCONTROLLER COMPATIBLE
■ FULLY INTEGRATE POWER MANAGEMENT
FOR ALL OPERATING MODES
■ INTERNAL TWO POINT Vcc REGULATOR
■ OVER-CURRENT PROTECTION WITH
DIGITAL OUTPUT SIGNAL
■ CROSS-CONDUCTION PROTECTION
(INTERLOCKING)
■ UNDER VOLTAGE LOCK OUT
■ INTEGRATED BOOTSTRAP DIODE
2 APPLICATIONS
■ DIMMABLE/NON-DIMMABLE BALLST
3 DESCRIPTION
Designed in High-voltage BCD Off-line technolo-
gy, the L6382D is provided with 4 input pins and a
Figure 2. Block Diagram
Figure 1. Package
SO20
Table 1. Order Codes
Part Number
L6382D
L6382DTR
Package
SO20 tube
SO20 in Tape & Reel
high voltage start-up generator conceived for ap-
plications managed by a microcontroller.
It allows the designer to use the same ballast cir-
cuit for different lamp wattage/type by simply
changing the µC software.
The digital input pins - able to receive signals up to
400KHz - are connected to level shifters that pro-
vide the control signals to their relevant drivers;
HVSU
TPR
>600V_HIGH
“O_VN_O” _LTAGE
START-UP
G^“OE^FN^F”ERATOR
IC BIAS
mP UVLO
ON
3.3V
SUPPLY
L
O
PSW
G
I
C
TPR
DIM
BOOTSTRAP
RQ
LEVEL SHIFT
3.3V 600V
SQ
RQ
SQ
HED
HSD
LSD
OCP
PFD
BOOT
HSG
OUT
LSG
CSO
CSI
HEG
PFG
REF
GND
Vcc HSI LSI HEI PFI
January 2005
Rev. 2
1/14