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ISL6721 Datasheet(PDF) 19 Page - Intersil Corporation

Part # ISL6721
Description  Flexible Single Ended Current Mode PWM Controller
PDF  21 Pages
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL6721 Datasheet(HTML) 19 Page - Intersil Corporation

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19
FN9110.4
April 13, 2007
Component List
References
[1] Ridley, R., “A New Continuous-Time Model for Current
Mode Control”, IEEE Transactions on Power
Electronics, Vol. 6, No. 2, April 1991.
[2] Dixon, Lloyd H., “Closing the Feedback Loop”, Unitrode
Power Supply Design Seminar, SEM-700, 1990.
TABLE 2.
REFERENCE
DESIGNATOR
VALUE
DESCRIPTION
C1, C2, C3
1.0
μF
Capacitor, 1812, X7R, 100V, 20%
C5, C13
0.1
μF
Capacitor, 0603, X7R, 25V, 10%
C15, C16, C19,
C20
560
μF
Capacitor, Radial, SANYO 4SEP560M
C17
470pF
Capacitor, 0603, COG, 50V, 5%
C18
0.01
μF
Capacitor, 0805, X7R, 50V, 10%
C21, C22
22
μF
Capacitor, 1210, X5R, 10V, 20%
C4, C14
100pF
Capacitor, 0603, COG, 50V, 5%
C6
1500pF
Capacitor, Disc, Murata
DE1E3KX152MA5BA01
C7
0
Ω Jumper, 0603
C8
330pF
Capacitor, 0603, COG, 50V, 5%
C9, C10, C11, C12 0.22μF
Capacitor, 0603, X7R, 16V, 10%
CR2, CR6
Diode, Fairchild ES1C
CR4, CR5
Diode, IR 12CWQ03FN
D1
Zener, 18V, Zetex BZX84C18
D2
Diode, Schottky, BAT54C
Q1
FET, Fairchild FDS2570
Q2
Transistor, Zetex FMMT491A
Q3
Transistor, ON MJD31C
R1, R2
1.00k
Resistor, 1206, 1%
R10
20.0k
Resistor, 0603, 1%
FIGURE 12. GATE AND DRAIN-SOURCE WAVEFORMS
NOTE:
Trace 1: VD-S
Trace 3: VG-S
R7, R9, R11, R26,
R27
10.0k
Resistor, 0603, 1%
R12
38.3k
Resistor, 0603, 1%
R13, R15, R17,
R18, R19, R25
1.00k
Resistor, 0603, 1%
R14
10
Resistor, 0603, 1%
R16
165
Resistor, 0603, 1%
R21
10.0
Resistor, 1206, 1%
R22
5.11
Resistor, 0603, 1%
R24
3.92k
Resistor, 2512, 1%
R3, R23
100
Resistor, 0603, 1%
R4
1.00
Resistor, 2512, 1%
R5
221k
Resistor, 0603, 1%
R6
75.0k
Resistor, 0603, 1%
R8, R20
OMIT
T1
Transformer, MIDCOM 31555
U2
Opto-coupler, NEC PS2801-1
U3
Shunt Reference, National LM431BIM3
U4
PWM, Intersil ISL6721IB
VR1
Zener, 15V, Zetex BZX84C15
TABLE 2.
REFERENCE
DESIGNATOR
VALUE
DESCRIPTION
ISL6721



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