ICE3GS03LJG Datasheet, PDF (5/25 Pages) Infineon Technologies AG – Of f-Line SMPS Current Mode Controller wi th integrated 500V Startup Cell

F3 PWM controller
ICE3GS03LJG
Pin Configuration and Functionality
1 Pin Configuration and Functionality
1.1 Pin Configuration with PG-DSO-8
1.2 Pin Functionality
Pin Symbol Function
1
BL extended Blanking and Latch off
enable
2
FB Feedback
3
CS Current Sense
4
Gate Gate driver output
5
HV High Voltage input
6
n.c. Not Connected
7
VCC Controller Supply Voltage
8
GND Controller Ground
BL (extended Blanking and Latch off enable)
The BL pin combines the functions of extendable
blanking time for entering the Auto Restart Protection
Mode and the external latch off enable. The extendable
blanking time function is to extend the built-in 20ms
blanking time by adding an external capacitor at BL to
ground. The external latch off enable function is an
external access to latch off the IC. It is triggered by
pulling down the BL pin to less than 0.33V.
FB (Feedback)
The information about the regulation is provided by the
FB Pin to the internal Protection Unit and to the internal
PWM-Comparator to control the duty cycle. The FB-
signal is the only control in case of light load at the
Active Burst Mode.
Package PG-DSO-8
BL
1
8
GND
CS (Current Sense)
The Current Sense pin senses the voltage developed
on the series resistor inserted in the source of the
Power MOSFET. If CS reaches the internal threshold
of the Current Limit Comparator, the Driver output is
immediately switched off. Furthermore, this current
information can be used to realize the Current Mode
operation through the PWM-Comparator where it
compares with FB signal.
FB
2
CS
3
Gate
4
Gate
7
VCC
The Gate pin is the output of the internal driver stage
connected to the Gate of an external power MOSFET.
6
N.C.
HV (High Voltage)
5
HV
The high voltage Pin is connected to the rectified DC
input voltage. It is the input for the integrated 500V
Startup cell.
Figure 1
Pin Configuration PG-DSO-8(top view)
VCC (Power supply)
The VCC pin is the positive supply of the IC. The
operating range is between 10.5V and 25V.
GND (Ground)
The GND pin is the ground of the controller.
Version 2.0
5
1 Nov 2010