AN4129 Datasheet, PDF (17/39 Pages) Fairchild Semiconductor – Green Current Mode PWM Controller FAN7601

Figure 27. Schematic
,
2
"2
 / HM&USIBLE
!# 6
3EENOTE
.
!# 6
"2 ) $' %3 -4
2
+
,
M(Y
#
U &6
,
M(Y
2 
+
2
 7
2
 +
#
U&6 ^#
 U& 6
2
+
5
(6, %$ 0&
$
--3$
4 
 ^4

,PR I  M( Y
6R EF L 
)PK  !
6
)R MS !


$
3 44 (!
2
 +

2 ^6REFL6
+


6
#

P&
)P K  !
)R MS !
#R AMER#3-  
. EE DE D
O NLY FO R
/ 60
OPTIONAL
 ! AVE RA GE

#
U &6
,% $
,% $ 7( 4
 , %$S
,% $
,% $ 7( 4
#
#

 N&
#
$
U&6
#
U& 6
2
 +
 P&9 
"! 4:& ) ,-
#
2
2
N&
Note:
!-V
The fusible resistor (R1) in the bill of materials has been tested for long periods at a conduction angle of 90 degrees (worst stress
point) and is known to hold. Test substitutes carefully.