Typical Characteristics
Power derating
Output characteristic (typ)
Efficiency (typ) @ TA = +25°C
5.4
5.3
5.2
5.1
5,0
4.9
4.8
84
20
15
10
5
36V
82
75V
80
78
76
74
72
0
1.0 1.25 1.50 1.75 2.00 2.25 2.50 2.5
3.0
+90 +100
Case temperature (˚C)
+110
+120
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
-50
-40
-30
+80
Load Current (A)
Load current (A)
Dynamic load response (typ) @ +25°C
Temperature coefficient
Turn-on/turn-off input voltage
5.25
38
36
35
34
32
31
30
The output voltage
deviation is
determined by the
load transient (dI/
5.18
5.11
5.05
4.98
4.91
4.85
200 mV/div
dt)
Turn on
Load change:
dI/dt »4A/ms
Turn off
2 A/div
IOstep=
1.5-3-1.5A
-30 -14.3 1.2 16.8 32.5 48.1 64.7 79.8
95
-30 -14.3 1.2 16.8 32.5 48.1 64.7 79.8
95
0.2 ms/div
Case temperature ˚(C)
Case temperature (C)
EMC Specifications
During EMC measurements the PKF power module is
measured directly.
External Filter (class B)
Required external input filter in order to meet class B in EN
55022, CISPR 22 and FCC part 15J.
The fundamental switching frequency is 510 kHz 5%
at IO = 0.3…3A
Test Conditions: VI= 53 V, IO= 3A at room temperature
L1 = 51µH ( Recommended part: Siemens B82790-S0513 )
L2 = 10µH
C1, C2, C3 = 0.68 µF
C4 = 22µF
C5, C6 = 10nF
Conducted EMI (input teminals)
C5
L1
L2
C3
+
-
pin 18
pin 17
C2
C1
C4
Supply
voltage
C6
PKF 4211A without filter
EN/LZT 146 79 R1A ©Ericsson Microelectronics AB, June 2001
5
ERICSSON [ ERICSSON ]
