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PDF BP5222X Data sheet ( Hoja de datos )
| Número de pieza | BP5222X | |
| Descripción | (BP5220 - BP5222X) DC / DC CONVERTER | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de BP5222X (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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DC / DC converter
BP5220 / BP5221 / BP5222 /
BP5220X / BP5221X / BP5222X
The BP5220, BP5221, BP5222, BP5220X, BP5221X, and BP5222X are DC / DC converters that use a pulse
width modulation (PWM) system. They contain control circuits, switching devices, rectifiers, and coils, and operate
by only connecting an I / O smoothing capacitor. With a high efficiency of power conversion, the modules are
available in stand-alone 9-pin SIP packages with no heat sink required. They can be applied to various purposes
by fine-adjusting the output voltage and switching on and off. With a wide range of input voltage, the modules are
best suited for obtaining a stable local power supply from a main power supply with a large voltage variation.
Applications
Power supplies for copiers, personal computers, facsimiles, AV equipment, measuring instruments, vending
machines, security device, registers, industrial equipment, and maintenance tools
Features
1) Wide range of input voltage.
2) High power conversion efficiency.
3) Built-in output ON / OFF switch.
4) Applicable to various purposes by
fine-adjusting the output voltage.
5) Small number of external components required.
6) Heat sink unnecessary.
7) Compact package.
BP5220 / BP5221 / BP5222 : SIP9
BP5220X / BP5221X / BP5222X : SIP9(L-shaped lead type)
List of the series
BP5220 / BP5220X BP5221 / BP5221X BP5222 / BP5222X
Input voltage
8~38
8~38
15~38
Output voltage
Output current
Power conversion
effciency
5
1
85
(VIN=15V)
5
0.5
84
(VIN=15V)
12
0.5
90
(VIN=20V)
Unit
V
V
A
%
Absolute maximum ratings (Ta=25°C)
Parameter
Symbol
Input voltage
Output current
Operating temperature range
Storage temperature range
VIN
IO
Topr
Tstg
BP5220 / BP5220X
8~38
1
Limits
BP5221 / BP5221X
8~38
0.5
−20~+70
−25~+80
BP5222 / BP5222X
15~38
0.5
Unit
V
A
°C
°C
1/8
1 page  
BP5220 / BP5221 / BP5222 /
BP5220X / BP5221X / BP5222X
Application example 3 : Output voltage fine adjustment
(1) When reducing the output voltage
(2) When increasing the output voltage
BP5220 / BP5221 / BP5222
BP5220X / BP5221X / BP5222X
9
Be sure to use
fuse for safety
7654321
VIN
+
100µF
VR
VO
+
470µF
BP5220 / BP5221 / BP5222
BP5220X / BP5221X / BP5222X
9 7654321
Be sure to use
fuse for safety
VIN VR
+
100µF
VO
+
470µF
Fig.7
Fig.8
VR value setting equations(The output voltage after adjustment is denoted Vo.)
(1) When reducing the output voltage
BP5220 / BP5221, BP5220X / BP5221X
R=(VO−1.281) / (0.0278−0.00556VO) (kΩ)
BP5222, BP5222X
R=(Vo−1.281) / (0.1196−0.01Vo) (kΩ)
(2) When increasing the output voltage
BP5220 / BP5221, BP5220X / BP5221X
R=11160 / (48.4Vo−242) (kΩ)
BP5222, BP5222X
R=1200 / (9.368Vo−112) (kΩ)
To make full use of the ability of the the module products, we recommended the output voltage be
adjusted within ± 20% of the output voltage rating. When the output voltage is increased by 20%, for
instance, the minimum input voltage is also increased by 20%.
(Example : When the output voltage is changed from 5V to 6V in the BP5220, the minimum input voltage
is changed from 8V to 9.6V)
Application example 4 : Slow start
The slow start circuit mitigates the pulse load on the internal switching transistor when input voltage is applied,
and rises the output voltage gradually by starting the switching operation slowly.
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This application is useful for preventing the malfunction of an external protection circuit due to a rush current,
and can serve as a countermeasure against the operation outside the safe operation range.
BP5220 / BP5221 / BP5222
BP5220X / BP5221X / BP5222X
VIN
24V
9 7654321
Be sure to use
fuse for safety
+
100µF
+
470µF
VO
470kΩ
2SC1740R
+ C1
10µF
Fig.9
C1 is a slow-start capacitor for mitigating the over rush current that flows into the modules when the switch is
turned on.
5/8
Datasheet pdf - http://www.DataSheet4U.net/
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet BP5222X.PDF ] | |
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