Datasheet

PART LIST
R
1
= 30K
Ω
R
2
= 10K
Ω
R
3
= 15K
Ω
R
4
= 30K
Ω
R
5
= 22
Ω
R
6
= 4.7K
Ω
R
7
= see table A
R
8
= OPTION
R
9
= 4.7K
Ω
* C
1
= C
2
= 1000
µ
F 63V EYF (ROE)
C
3
= C
4
= C
5
= C
6
= 2,2
µ
F 50V
C
7
= 390pF Film
C
8
= 22nF MKT 1837 (ERO)
C
9
= 2.7nF KP 1830 (ERO)
C
10
= 0.33
µ
F Film
C
11
= 1nF
** C
12
= C
13
= C
14
= 100
µ
F 40V EKR (ROE)
C
15
= 1
µ
F Film
D1 = SB 560 (OR EQUIVALENT)
L1 = 150
µ
H
core 58310 MAGNETICS
45 TURNS 0.91mm (AWG 19)
COGEMA 949181
* 2 capacitors in parallel to increase input RMS current capability.
* * 3 capacitors in parallel to reduce total output ESR.
Table A
V
0
R
9
R
7
12V
15V
18V
24V
4.7k
Ω
4.7k
Ω
4.7k
Ω
4.7k
Ω
6.2kW
9.1k
Ω
12
Ω
18
Ω
Table B
SUGGESTED BOOSTRAP CAPACITORS
Operating Frequency Boostrap Cap.c10
f = 20KHz
≥
680nF
f = 50KHz
≥
470nF
f = 100KHz
≥
330nF
f = 200KHz
≥
220nF
f = 500KHz
≥
100nF
Figure 6a : Component Layout of fig.5 (1 : 1 scale). Evaluation Board Available
L4974A
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