Sr Mosfet; Design Of Control Parameters And Protections; Frequency Setting; Minimum/Maximum Frequency Setting - Infineon ICE2HS01G Application Note

N
= =
p
2
N
s
n
2.2.8

SR MOSFET

The voltage stress on the drain-source of the MOSFET is:
= + =
( * ) 2
V V V
ds o f
The RMS value of the current flowing through each MOSFET is:
π
= =
19 . 63
I I
_
d rms o
4
2.3

Design of Control Parameters and Protections

2.3.1

Frequency setting:

The IC internal circuit provides a regulated 2V voltage at FREQ pin. The effective resistance presented
between the FREQ pin and GND, determines the current flowing out of the FREQ pin, which in turn
defines the switching frequency.
Figure 3 shows the curve illustrating the relationship of Switching Frequency
Resistor connected between the FREQ pin and gound.
R
FREQ
FREQ
Figure 3 Vs Effective Resistor
2.3.2

Minimum/Maximum frequency setting:

Application Note
24 2 .
V
A
R
FREQ
10
Vs Effective
FREQ
2011-07-06