參數(shù)資料
型號(hào): CS51024EDR16
廠商: ZF Electronics Corporation
英文描述: Enhanced Current Mode PWM Controller
中文描述: 增強(qiáng)電流模式PWM控制器
文件頁(yè)數(shù): 8/9頁(yè)
文件大?。?/td> 170K
代理商: CS51024EDR16
C
8
timing capacitor’s discharge current is trimmed, the maxi-
mum duty cycle is well defined. It is determined by the
ratio between the timing resistor R
T
and the timing capaci-
tor C
T
. Refer to figures 5 and 6 to select appropriate values
for R
T
and C
T.
1
T
SW
f
SW
=
; T
SW
= t
CH
+ t
DIS
Figure 5: Frequency vs. R
T
for Discrete Capacitor Values.
Figure 6: Duty Cycle vs. R
T
for Discrete Capacitor Values.
90
80
70
60
50
40
10
15
20
25
30
35
5
40
45
50
D
R
T
(k
)
2
3
4
5
6
7
8
55
100
1
1. C
T
= 47pF
2. C
T
= 100pF
3. C
T
= 150pF
4. C
T
= 220pF
5. C
T
= 390pF
6. C
T
= 470pF
7. C
T
= 560pF
8. C
T
= 680pF
2500
2000
1500
1000
500
0
10
15
20
25
30
35
5
40
45
50
F
R
T
(k
)
1
2
3
4
5
6
7
8
1. C
T
= 47pF
2. C
T
= 100pF
3. C
T
= 150pF
4. C
T
= 220pF
5. C
T
= 390pF
6. C
T
= 470pF
7. C
T
= 560pF
8. C
T
= 680pF
Circuit Description: continued
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