參數(shù)資料
型號: HA16116FP
廠商: Hitachi,Ltd.
元件分類: FPGA
英文描述: 1500000 SYSTEM GATE 1.5 VOLT FPGA
中文描述: 開關(guān)穩(wěn)壓器的斬波式直流/直流轉(zhuǎn)換器
文件頁數(shù): 17/34頁
文件大?。?/td> 250K
代理商: HA16116FP
HA16116FP/FPJ, HA16121FP/FPJ
17
6.4 Examples of Intermittent Operation Timing (calculated values)
ON
T = T C R
B
T = 0.4
×
1
1
On duty
Here, coefficient
Example: If C = 2.2 F,
R = 4.7 k , and the on duty
of the current limiter is 75%,
then T = 16 ms.
from section 6.3 (1) previously.
(1) T
0
20
40
60
80
100
0
1
2
3
4
T
1
(PWM) ON Duty (%)
Figure 6.4 Examples of Intermittent Operation Timing (1)
If C = 2.2 F, R = 4.7 k ,
R = 390 k , V = 12 V,
T = 60 ms.
then
(2) T
OFF
T = T C (R + R )
T = ln
V
IN
2V
BE
V
IN
3V
BE
Here, coefficient
from section 6.3 (2) previously.
Example:
0
20
40
0
0.05
0.1
T
2
V (V)
10
30
Figure 6.5 Examples of Intermittent Operation Timing (2)
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