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SI-8021 Folha de dados(PDF) 4 Page - Sanken electric

Nome de Peças SI-8021
Descrição Electrónicos  Separate Excitation Switching Type
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Fabricante Electrônico  SANKEN [Sanken electric]
Página de início  http://www.sanken-ele.co.jp/en
Logo SANKEN - Sanken electric

SI-8021 Folha de dados(HTML) 4 Page - Sanken electric

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89
sStandard External Circuit
sNotes of Pattern Design
1) Thick lines in the Standard External Circuit are lines through which a large current flows. Make these pattern lines as thick as possible.
2) Place capacitor C1 on the input side as closely as possible to terminals no.2 and no.4 of the STR7000/7100 series. C1 may be used in
combination with a smoothing capacitor for rectifying, but the above points must be taken into consideration. In cases where C1 is not provided
or it is placed too far from the terminals stated above, abnormal oscillation due to poorer transient response or increased ringing may occur.
3) Connect voltage sensing terminal VO.S and GND as closely as possible to output capacitor C4 (a current of approximately 1mA flows into the
VO.S terminal). If they are placed too far from C4, abnormal oscillation due to decreased regulation or increased switching ripple may occur.
4) Connect current sensing terminal C.S and GND as closely as possible to the detection resistor Rs (a current of approximately 0.5mA flows
from the CS terminal).
If they are placed too far from Rs, a decrease of the overcurrent setting point due to the voltage drop in the pattern, or malfunction of the
protection circuit due to increased ringing may occur.
sTa-PD Characteristics
STR7000 Series
STR7100 Series
3
2
9
4
VIN
C1
C5 330P
C2
330p
C3
10
µF
2200
µF
C4
1500
µF × 2 (parallel)
VO
GND
*C5 STR7100 Series only
1
25
5
1
10
8
6
7
3
4
VIN
GND
F/W
DRIVE
STR7000
STR7100
SERIES
SW
VIN
VO.S
RS
VO. ADJ
OSC. OUT
SHUT DOWN
VREF
C.S
C.A
C.B
GND
DRIVE
L
*
6A ... 0.02
12A ... 0.01
5V ... 200
µH
12V ...
250
µH
15V
24V ... 300
µH
SI-8020
SERIES
40
35
30
25
20
15
10
5
0
–20
0
25
50
75
100
125
Ambient Temperature Ta (
°C)
200
×300×2
200
×200×2
100
×200×2
100
×100×2
75
×75×2
Without heatsink
Without Mica
With Silicon Grease
Heatsink: Aluminum
Unit: mm
40
35
30
25
20
15
10
5
0
–20
0
25
50
75
100
125
Ambient Temperature Ta (
°C)
200
×300×2
200
×200×2
100
×200×2
100
×100×2
75
×75×2
Without heatsink
Without Mica
With Silicon Grease
Heatsink: Aluminum
Unit: mm
qSTR7000+SI-8020 Series


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