ICE2QS01 Datasheet, PDF (6/17 Pages) Infineon Technologies AG – Quasi-resonant PWM Controller

Quasi-Resonant PWM Controller
ICE2QS01
Representative block diagram
2 Representative block diagram
ZC
1
REG
2
R_Reg
VREF
VZCT2
VZCT1
VOLP
V_VCCOVP
Vvccuvp
VOPOVP
VcsSW
OLP
VCC
OVP
VCC
UVP
auto
restart
output
OVP
SWP
latch
off
ringing
suppression
time control
Zero-crossing
counter
up/down
counter
active burst
control
CS
3
HV
4, 5
VCC
7
Figure 2
power management
power cell
controller
Representative Blockdigram
current limitation /
foldback correction
Vcsth
current measurement
v1
Vos
on/off FF
gate driver
OUT
6
GND
8
Version 2.1
6
26 October 2007