TPS65562 Datasheet, PDF (1/16 Pages) Texas Instruments – INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER

TPS65562
www.ti.com
SLVS775 – JUNE 2007
INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER
FEATURES
• High Integrated Solution to Reduce
Components
• Integrated Voltage Reference
• Integrated 50-V Power Switch
• Integrated Insulated Gated BiPolar Transistor
(IGBT) Driver
• High Efficiency
• Programmable Peak Current, 0.9 A ~ 1.8 A
• Input Voltage of 1.6 V to 12 V
• Optimized Control Loop for Fast Charge Time
• Isolate IGBT VCC from VCC
• Output Voltage Feedback From Primary Side
• 16-pin QFN Package
• Protection
– MAX On Time
– MAX Off Time
– Over Current Shutdown to Monitor VDS at
SW Pin (OVDS)
– Thermal Disable
APPLICATIONS
• Digital Still Cameras
• Optical Film Cameras
DESCRIPTION/ORDERING
INFORMATION
This device offers a complete solution for charging
photo flash capacitor from battery input, and
subsequently discharging the capacitor to a xenon
flash tube. This device has an integrated voltage
reference, power switch, IGBT driver, and control
logic blocks for charging applications and driving
IGBT application. Compared with discreet solutions,
this device reduces the component count, shrinks the
solution size, and eases designs for xenon tube
application. Additional advantages are a fast
charging time and high efficiency from an optimized
pulse width modulation (PWM) control algorithm.
Other provisions of the device includes sensing the
output voltage from the primary side, programmable
peak current, thermal shutdown, an output pin for
charge completion, and input pins for charge enable
and flash enable.
V_I/F
Controller
or
D/A Conv.
or
Analog
Circuit
or
CHG
I_PEAK
F_ON
VCC
VCC
T1
IGBT_VCC
VBAT
IGBT_VCC
SW
VA D1
C1
VOUT
DQ
F1
OV_DS
I_PEAK
ref
SW
U1
V_FULL
U2
TSD
U3
DQ
F2
ENA
ENA
VCC
U0
MAX ON
LOGIC
Vref
ENA
IGBT_VCC
U4
V_I/F
XFULL
R1
PGND
G_IGBT
SW1
IGBT
(NC)
Figure 1. Typical Application Circuit
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007, Texas Instruments Incorporated