ICE2QS01 Infineon Technologies, ICE2QS01 Datasheet - Page 3

• Manufacturer Part Number: ICE2QS01
• Description: IC PWM CONTROLLER 8DIP
• Manufacturer: Infineon Technologies
• Type: Quasi-resonant PWM Controllerr

Specifications of ICE2QS01

• Package / Case: 8-DIP (0.300", 7.62mm)
• Frequency - Switching: 80kHz
• Current - Startup: 300µA
• Voltage - Supply: 11 V ~ 25 V
• Operating Temperature: -25°C ~ 125°C
• Mounting Type: Through Hole
• Switching Frequency: 80 KHz
• Maximum Operating Temperature: + 125 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Mode: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: SP000269328

Typical Application
Type
Features
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Version 2.1
Quasi-Resonant PWM Controller
Product Highlights
• Active burst mode for low standby power
• Digital frequency reduction for better overall
• Integrated power cell for IC self-power supply
ICE2QS01
85 ~ 265 VAC
C
Quasiresonant operation till very low load
Active burst mode operation at light load for low
standby input power (< 1W)
Digital frequency reduction with decreasing load
Power cell for VCC pre-charging and IC power supply
during latch-off, or standby mode operation when it is
necessary
Built-in digital soft-start
Foldback correction and cycle-by-cycle peak current
limitation
Auto restart mode for VCC Overvoltage protection
Auto restart mode for VCC Undervoltage protection
Auto restart mode for openloop/overload protection
Latch-off mode for adjustable output overvoltage
protection
Latch-off mode for Short-winding protection
system efficiency
REG
GND
REG
D
r1
~D
Power
Cell
PWM
Controller
r4
HV
C
VCC
Zero Crossing Detection
Power Management
Digital Process Block
Active Burst Mode
Protection Block
Current Mode Control
C
bus
VCC
R
VCC
ZC
Package
PG-DIP-8
D
VCC
R
ICE2QS01
Gate
Driver
Current
Limitation
ZC2
3
Description
ICE2QS01 is a quasi-resonant PWM controller
optimized for off-line switch power supply applications
such as LCD TV, CRT TV and notebook adapter. The
digital frequency reduction with decreasing load
enables a quasi-resonant operation till very low load.
As a result, the system efficiency is significantly
improved compared to other conventional solutions.
The active burst mode operation enables an ultra-low
power consumption at standby mode with small and
controllable output voltage ripple. The innovative
power cell solves the IC power supply problem when
the output voltage is pulled down during standby
mode, or during latch-off mode. The numerous
protection functions give a full protection of the power
supply system in failure situations. All of these make
the ICE2QS01 an outstanding controller for quasi-
resonant flyback converter in the market.
C
R
Snubber
ZC
ZC1
OUT
CS
D
ZC
Q
1
R
CS
W
W
p
a
C
C
PS
Optocoupler
DS
W
s
D
TL431
O
R
C
b1
O
ICE2QS01
PG-DIP-8
R
L
October 2007
b2
f
R
C
C
c1
c1
f
R
R
C
ovs2
ovs1
c2
V
O