ICE2QS03G_16 Datasheet, PDF (4/28 Pages) Infineon Technologies AG – 45 W adapter demo board

45 W adapter demo board
Using the new 800 V CoolMOS™ P7 and ICE2QS03G quasi-resonant PWM controller
ICE2QS03G functional overview
3
ICE2QS03G functional overview
The PWM controller ICE2QS03G is a second generation quasi-resonant flyback controller IC developed by
Infineon Technologies. The typical applications include TV-sets, DVD-players, set-top boxes, netbook adapters,
home audio, and printer applications. This controller implements switching at the lowest ringing voltage and
also includes pulse skipping at light loads for maximum efficiency across a wide range of loads.
Figure 4 ICE2QS03G pinout
Table 1
ICE2QS03G pin description
Pin Name
Description
1 Zero Crossing (ZC)
Detects the minimum trough (valley) voltage for turn on for the primary
switch turn on time
2 Feedback (FB)
Voltage feedback for output regulation
3 Current Sense (CS)
Primary side current sense for short circuit protection and current
mode control
4 Gate drive output (GATE) MOSFET gate driver pin
5 High Voltage (HV)
Connects to the bus voltage for the initial startup through the high
voltage startup cell
6 No Connect (NC)
No connection
7 Power supply (VCC)
Positive IC for the power supply
8 Ground (GND)
Controller ground
Application Note
4
Revision 1.0
2016-06-27