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ICE5QSAG Datasheet PDF : 27 Pages
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ICE5QSAG
Quasi-Resonant Controller
Product Highlights
Novel Quasi-resonant operation and proprietary implementation for low EMI
Enhanced Active Burst Mode with selectable entry and exit standby power
Active Burst Mode to reach the lowest standby power <100 mW
Fast startup achieved with cascode configuration
Digital frequency reduction for better overall system efficiency
Robust line protection with input OVP and brownout
Comprehensive protection
Pb-free lead plating, halogen free mold compound, RoHS compliant
PG-DSO-8
Features
Applications
Minimum switching frequency difference between low & high
line for higher efficiency & better EMI
Enhanced Active Burst Mode with selectable entry and exit
standby power
Active Burst Mode to reach the lowest standby power <100 mW
Fast startup achieved with cascode configuration
Digital frequency reduction up to 10 zero crossings
Built-in digital soft start
Cycle-by-cycle peak current limitation
Maximum on/off time limitation to avoid audible noise during
start up and power down
Robust line protection with input OVP and brownout
Auto restart mode protection for VCC Over Voltage, VCC Under
Voltage, Over load/Open Loop, Output Over Voltage, Over
Temperature
Limited charging current for VCC short to GND
Pb-free lead plating, halogen free mold compound, RoHS
compliant
Auxiliary power supply for Home Appliances/white Goods, TV,
PC & Server
Blu-ray player, Set-top box & LCD/LED Monitor
Description
The Quasi-Resonant, ICE5QSAG is the 5th generation of quasi-
resonant controller optimized for off-line switch power supply in
cascode configuration. The improved digital frequency reduction
with proprietary novel Quasi-Resonant operation offers lower EMI
and higher efficiency for wide AC range by reducing the switching
frequency difference between low and high line. The enhanced
active burst mode enables flexibility in standby power range
selection. The product has a wide operating range (10~25.5 V) of
IC power supply and lower power consumption. The numerous
protection functions including the robust line protection (both
input OVP and brownout) to support the protections of the power
supply system in failure situations. All of these make the
ICE5QSAG an outstanding controller for Quasi-Resonant flyback
converter in the market.
85 ~ 300 VAC
Dr1~Dr4
RI1
VIN
RI2
GND
# Optional
RSel (Burst mode level 2)
Rovs3 (V02 feedback)
Cbus
CVCC
RSTARTUP
RVCC DVCC
DZC
RZC
VCC ZCD
CZC
Snubber
Wp
DO1
Ws1
Lf1
CO1
Cf1
Wa
DO2
Ws2
CO2 Lf2
Cf2
Power Management
PWM controller
Current Mode Control
Cycle-by-Cycle
current limitation
Digital Control
Active Burst Mode
Zero Crossing
Detection
Protections
D
RZCD
Gate
Driver
ICE5QSAG
Controller
Power CPS
MOSFET
GATE
Rb1
SOURCE
Rb2
Rovs1
CS
FB
RCS
Rc1
Optocoupler
TL431
Cc1 Cc2
Rovs2
VO1
VO2
# Rovs3
Figure 1
Table 1
Type
ICE5QSAG
Typical application
Output Power of 5th generation Quasi-Resonant Controller
Package
Marking
PG-DSO-8
5QSAG
220VAC ±20%1
109 W
85-300 VAC1
60 W
1 Calculated maximum output power rating in an open frame design at Ta=50°C, TJ=125°C. The output power figure is for reference
purpose only. The actual power can vary depending on particular designs. Please contact to a technical expert from Infineon for more
information.
Datasheet
www.infineon.com
Please read the Important Notice and Warnings at the end of this document
page 1 of 27
V 2.1
2020-02-03
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