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參數(shù)資料
| 型號： | BP5221 |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 97K |
| 代理商： | BP5221 |
BP5220 / BP5221 / BP5222 /
BP5220X / BP5221X / BP5222X
Application example 3 : Output voltage fine adjustment
(1) When reducing the output voltage
VR value setting equations(The output voltage after adjustment is denoted Vo.)
(1) When reducing the output voltage
BP5220 / BP5221, BP5220X / BP5221X
BP5222, BP5222X
R=(Vo
1.281) / (0.1196
0.01Vo) (k
)
(2) When increasing the output voltage
BP5220 / BP5221, BP5220X / BP5221X
BP5222, BP5222X
R=1200 / (9.368Vo
112) (k
)
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)
R=(V
O
1.281) / (0.0278
0.00556V
O
) (k
)
R=11160 / (48.4Vo
242) (k
)
(2) When increasing the output voltage
100
μ
F
V
IN
9
7
6
5
4
3
2
1
470
μ
F
VR
BP5220X / BP5221X / BP5222X
BP5220 / BP5221 / BP5222
V
O
+
+
Fig.7
100
μ
F
V
IN
9
7
6
5
4
3
2
1
470
μ
F
VR
V
O
BP5220X / BP5221X / BP5222X
BP5220 / BP5221 / BP5222
+
+
Fig.8
9
7
6
5
4
3
2
1
100
μ
F
V
O
470
μ
F
1
C1
10
μ
F
V
IN
24V
470k
BP5220X / BP5221X / BP5222X
BP5220 / BP5221 / BP5222
2SC1740R
+
+
+
Fig.9
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.
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.
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
Be sure to use
fuse for safety
Be sure to use
fuse for safety
Be sure to use
fuse for safety
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BP5221A | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 HIC REGULATOR DC-DC 5V 500mA RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| BP5221X | 制造商:ROHM 制造商全稱:Rohm 功能描述:DC / DC CONVERTER |
| BP5222 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| BP5222A | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 HIC REGULATOR DC-DC 12V 500mA RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| BP5222X | 制造商:ROHM 制造商全稱:Rohm 功能描述:DC / DC CONVERTER |
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