Datasheet

Thermal measurements AN4260
20/29 DocID024275 Rev 2
and the compensator becomes:
Equation 16
At this point the Bode diagram of G1(f)*C_act(f) should be plotted, and check if the phase
margin for the stability is maintained.
8 Thermal measurements
A thermal analysis of the demonstration board in full load condition at T
AMB
= 25 °C has
been performed using an IR camera. The results are shown in the following figures.
Figure 32. Thermal measurement @ V
IN
= 80 V
AC
, full load (130 mA) Rbl = 8.2 kohm
G_act(f)
C
0_act
H
COMP
---------------
1
f
fzc_act
--------------------+


j2π f⋅⋅⋅
-----------------------------------⋅=
AM16656v1