ICE2QS03G Infineon Technologies, ICE2QS03G Datasheet - Page 3

• Manufacturer Part Number: ICE2QS03G
• Description: IC CTRLR PWM QUASI-RESON DSO8
• Manufacturer: Infineon Technologies

Specifications of ICE2QS03G

• Output Isolation: Isolated
• Frequency Range: 52kHz
• Voltage - Input: 11.2 V ~ 27 V
• Operating Temperature: -25°C ~ 130°C
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Quasi-Resonant PWM Controller
Product Highlight
• Active burst mode for low standby power
• Digital frequency reduction for better overall system efficiency
• Integrated power cell for IC self-power supply
Features
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Typical Application Circuit
Version 2.1
Type
ICE2QS03G
Quasiresonant operation till very low load
Active burst mode operation at light/no load for low
standby input power (< 100mW)
Digital frequency reduction with decreasing load
Power cell for VCC pre-charging with constant
current
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
Package
PG-DSO-8
3
Description
ICE2QS03G 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 overall 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. Based on the
BiCMOS technology, the product has a wide operation
range (up to 26V) of IC power supply and lower power
consumption. The numerous protection functions give
a full protection of the power supply system in failure
situations. All of these make the ICE2QS03G an
outstanding controller for quasi-resonant flyback
converter in the market.
ICE2QS03G
ICE2QS03G
PG-DSO-8
February 5, 2010