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參數(shù)資料
| 型號(hào)： | XC910C001EASR |
| 廠商： | TOREX SEMICONDUCTOR LTD. |
| 英文描述： | PWM Controlled Step-Up DC/DC Controllers |
| 中文描述： | PWM控制升壓型DC / DC控制器 |
| 文件頁數(shù)： | 10/22頁 |
| 文件大?。?/td> | 1058K |
| 代理商： | XC910C001EASR |
10/22
XC9101
Series
■
OPERATIONAL EXPLANATION (Continued)
●
Functional Settings
1. Soft Start
CE and soft start (SS) functions are commonly assigned to the CE/SS pin. The soft start function is effective until the
voltage at the CE pin reaches approximately 1.55 V rising from 0 V. Soft start time is approximated by the equation below
according to values of Vcont, R
SS
, and C
SS
.
T = - C
SS
×
R
SS
×
ln ((Vcont - 1.55) / Vcont)
Example: When C
SS
= 0.1
μ
F, R
SS
= 470 k
Ω
, and Vcont = 5 V,
T = -0.1 x 10
-6
×
470 x 10
3
×
ln ((5 - 1.55) / 5) = 17.44 ms
.
CE/SS pin
Vcont
Css
CE,
UVLO
Vref
circuit
To Verr amplifier
Rss
Set the soft start time to a value sufficiently longer than the period of a clock pulse.
> Circuit example 1: N-ch open drain
CE/SS pin
Css
Rss
ON/OFF signal
Vcont
> Circuit example 2: CMOS logic (low supply current)
CE/SS pin
Css
Rss
ON/OFF signal
Vcont
> Circuit example 3: CMOS logic (low supply current), quick off
CE/SS pin
Css
Rss
ON/OFF signal
Vcont
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相關(guān)代理商/技術(shù)參數(shù) |
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| XC910C001EKSL | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:PWM Controlled Step-Up DC/DC Controllers |
| XC910C001EKSR | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:PWM Controlled Step-Up DC/DC Controllers |
| XC910C001FASL | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:PWM Controlled Step-Up DC/DC Controllers |
| XC910C001FASR | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:PWM Controlled Step-Up DC/DC Controllers |
| XC910C001FKSL | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:PWM Controlled Step-Up DC/DC Controllers |
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