ICE1QS01 Datasheet PDF – Controller for Switch – Infineon

Part Number: ICE1QS01, ICE10S01

Function: Controller for Quasiresonant Switch

Package: DIP, SOP 8 Pin Type

Manufacturer: Infineon Technologies




The ICE1QS01 is optimized to control free running flyback converters with and without Power Factor Correction (with PFC Charge Pump).

The switching frequency is reduced in small steps with decreasing load towards a minimum of 20 kHz in standby mode. This function is performed by a digital circuit to avoid any jitter also with periodically pulsed loads. To provide extremely low power consumption at light loads, this device can be switched into Standby Burst Mode. This is also possible without standby control signal (for adapter application).


ICE1QS01 datasheet


1. Quasiresonant Operation
2. Primary and Secondary Regulation
3. Primary Current Simulation
4. Standby Input Power < 1 W
5. Low Power Consumption
6. Very Low Start-up Current
7. Soft-Start for noiseless Start-up
8. Standby Burst Mode with and without Control Signal for lowered Output Voltages
9. Digital Frequency Reduction in small Steps at Decreasing Load
10.Over- and Undervoltage Lockout
11. Switch Off at Mains Undervoltage
12. Mains Voltage Dependent Fold Back Point Correction
13. Ringing Suppression Time Controlled from Output Voltage
14. Free usable Fault Comparator

Block Diagram

ICE1QS01 block diagram

Other data sheets are available within the file: ICE10S01, ICE10S01G, ICE1QS01G, Q67040-S4558

ICE1QS01 Datasheet PDF Download

ICE1QS01 pdf