ICE1CS02 Datasheet, PDF (18/27 Pages) Infineon Technologies AG – Combi PFC/ PWM Controller

3.5.13 PWM External Shut down by Pre-Short
Whenever V_Preshort fall below the value set by pin 11
(PWM Pre-short) of 0.4V, the PWM output will be shut
down, as shown in Figure 30.
PWM Pre-Short
0.4V
PWM Shut Down
C13
Combi PFC/ PWM Controller
ICE1CS02
Functional Description
Figure 30 PWM Shut down by Pre-Short
3.5.14 PWM External Voltage Reference
The PWM external voltage reference is generated from
an internal trimmed 5V voltage reference. The external
voltage reference can source a minimum 12mA current
at pin 13 (VREF). To protect this external voltage
reference, it is equipped with a foldback characteristic,
which will cut down the output current when VREF is
shorted to GND. When using this external voltage
reference, the total current consumption of this IC
which includes this maximum source current must not
exceed the maximum operating junction temperature
of 125°C.
Version 1.0
18
25 July 2008