參數(shù)資料
型號： HA16120FPJ
廠商： Hitachi,Ltd.
英文描述： CAP 1000PF 25V 5% NP0(C0G) SMD-0603 TR-7 PLATED-NI/SN
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)： 18/38頁
文件大小： 275K
代理商： HA16120FPJ
HA16114P/PJ/FP/FPJ, HA16120FP/FPJ
18
7.4 Examples of Intermittent Mode Timing (calculated values)
ON
T = T C R
B
T = 0.69
×
1
1
On duty
Here, coefficient
Example: If C = 2.2 F,
R = 2.2 k , and the on duty
of the current limiter is 75%,
then T = 13 ms.
from section 7.3 (1) previously.
(1) T
0
20
40
60
80
100
0
2
4
6
8
T
1
(PWM) On duty (%)
Figure 7.4 Examples of Intermittent Mode Timing (1)
If C = 2.2 F, R = 2.2 k ,
R = 390 k , V = 12 V,
T = 55 ms.
then
(2) T
OFF
T = T C (R + R )
T = ln
V
IN
V
BE
V
IN
2V
BE
Here, coefficient
from section 7.3 (2) previously.
Example:
0
20
40
0
0.05
0.1
T
2
V (V)
10
30
Figure 7.5 Examples of Intermittent Mode Timing (2)
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