Datasheet

2006-03-22
Page 8
ITS 4141D
Conducted Emission
Acc. IEC 61967-4 (1Ω / 150Ω method)
Typ. V
bb
-Pin Emission at DC-On with 150Ω-matching network
-20
-10
0
10
20
30
40
50
60
70
80
90
100
0,1 1 10 100 1000
f / M H z
dBµV
150ohm Class6
150ohm Class1
VBB, noise floor
VBB, ON
150
Ω /
8-H
150
Ω /
13-N
Typ. V
bb
-Pin Emission at PWM-Mode with 150 Ω-matching network
-20
-10
0
10
20
30
40
50
60
70
80
90
100
0,1 1 10 100 1000
f / M H z
dBµV
150ohm Class6
150ohm Class1
VBB, noise floor
VBB, PW M
150
Ω /
8-H
150
Ω /
13-N
Test circuit:
PROFET
V
OUTIN
bb
R
5µH
5µH
150Ω-Network
GND
R
GND
For defined decoupling and high reproducibility a defined choke (5µH at 1 MHz)
is inserted between supply and V
bb
-pin.