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參數(shù)資料
| 型號： | AT1393B |
| 廠商： | Aimtron Technology Corp. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 6-Channel DC-DC Converter IC for DSC |
| 中文描述： | 6通道DC - DC轉換集成電路數(shù)碼相機 |
| 文件頁數(shù)： | 20/22頁 |
| 文件大小： | 736K |
| 代理商： | AT1393B |
AT1393/A/B/C
Preliminary Product Information
6-Channel DC-DC Converter IC for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email:
service@aimtron.com.tw
20
The CH6 Source Current
The output circuit of CH6 is illustrated in the following diagram. It can determine
the output source current by defining the value of resistor R
B
.
Note that the source current can be calculated by the following equation.
Output source current = (V
RB
/R
B
) * 210 (A)
Setting Time of Short Circuit Protection
The SCP comparator in each channel detects the output voltage to decide whether the
power converter works at normal condition. At the same time, the voltage level of
CSCP pin is held at low level. If the output load of these converters rapidly
malfunction or become shorted, causing the output voltage to drop, the SCP
comparator detects that and enables short circuit protection. The time period for
short circuit protection is shown in the following equation.
Short detection time (t
PE
(s))
t
PE
(s) = 0.7 * C
SCP
(
μ
F)
Note : It could be disabled short circuit protection function by connecting CSCP
pin into the ground.
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