User guide
19 of 45
V 1.0.1
2021-01-27
REF-AIRCON-C302A-IM564 user guide
Air conditioner application reference design kits
System and functional description
2.2.4
Overview of ICE5AR4770BZS
The ICE5AR4770BZS is Infineon’s latest (5
th
generation) fixed-frequency CoolSET
TM
offering high performance
and integration of the latest generation of 700 V CoolMOS
TM
superjunction MOSFETs in DIP-7 packages.
Figure 14 illustrates the internal block diagram and typical isolated flyback application.
Figure 14
ICE5AR4770BZS internal block and typical application in isolated flyback mode
Main features of ICE5AR4770BZS include:
100 kHz maximum switching frequency with 700 V integrated MOSFET
Power delivery of up to 15 W with universal wide input range (85 ~ 300 V
AC
) DCM design
Brown-in protection, fast and robust start-up operation with cascode configuration
3-level selectable entry/exit active-burst mode profile (optional)
Built-in digital soft-start
Cycle-by-cycle peak current limitation
Support both DCM and CCM operation with slope compensation
Integrated error amplifier to support direct feedback typical with non-isolated flyback topology
Digital frequency reduction with decreasing load for higher efficiency
Frequency jitter and soft gate driving for low EMI
Limited charging current for V
CC
pin short to ground
Comprehensive protection with VCC overvoltage, VCC undervoltage, overload/open loop, over-
temperature protection
Auto-restart for all protection features
