ICE2QS03G_16 Datasheet, PDF (11/28 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
Design considerations
14 17
_
=
14 + 17 ^{+ 12 + 13}
14 17
14 + 17
_
= 77.8
_
= 114.3
The 'enter UVLO' threshold is set at 77.8 to allow for the BUS capacitance voltage to droop under 90 V_AC at
full load operation with some margin to avoid false triggering.
Figure 12 Power supply status vs. AC input voltage showing the hysteretic behavior of the UVLO circuit.
Application Note
11
Revision 1.0
2016-06-27