Rainbow Electronics MAX5974D - Manual (Page 23)

MAX5974A/MAX5974B/MAX5974C/MAX5974D
Active-Clamped, Spread-Spectrum,
Current-Mode PWM Controllers
23
Typical Application Circuits
IN
EN
DCLMP
DT
DITHER/
SYNC
SS
C IN
1µF
25V
C F
330pF
C COMP2
6.8pF
R IN
100kI
L2
6.8µH
C OUT1 C OUT2 C OUT3 C OUT4
C OUT5
0.1µF
C BULK
33µF
R DCLMP1
30.1kI
1%
R OPTO2
1kI
1%
R DCLMP2
750I 1%
R DT
16.9kI 1%
C SS
0.1µF
D1
D2
D3
N T
L1
3.3mH
T1
V S
36V TO 57V
IN
C DITHER
10nF
FFB
FB
COMP
CS
D5
18V
18V
AUXDRV
CSSC
GND
RT
R FFB
10.0kI 1%
R G1
121kI 1%
R G2
200kI 1%
R CSSC
4.02kI 1%
R AUX
10kI
R CS
0.2I
R GATE3
10I
R GATE4
10I
R GATE1
10I
R GATE2
10I
R FB1
7.5kI
1%
5V, 5A
R FB2
2.49kI
1%
N3
FDS3692
N1
5i412DP
U1
FOD817CSD
N4
IRF6217
N
N P N S
D4
N
C AUX
47nF
C INT
0.1µF
U2
TLV4314AIDBVT-1.24V
C CLAMP
47nF
C COMP1
2.2nF
R OPTO1
825I
1%
R BIAS
4.02kI
1%
R RT
14.7kI 1%
R F
499I 1%
NDRV
PGND
N2
5i412DP
N
R COMP2
2.00kI
1%
P
R OPTO3
4.99kI
1%
R COMP2
499I
1%
MAX5974C
MAX5974D
(OPTOCOUPLER
FEEDBACK)