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參數(shù)資料
| 型號： | HSMC3842 |
| 廠商： | HSMC CORP. |
| 英文描述： | HIGH PERFORMANCE CURRENT MODE CONTROLERS |
| 中文描述： | 高性能電流模式CONTROLERS |
| 文件頁數(shù)： | 7/10頁 |
| 文件大?。?/td> | 154K |
| 代理商： | HSMC3842 |
HI-SINCERITY
MICROELECTRONICS CORP.
Spec. No. : HP200202
Issued Date : 1998.08.01
Revised Date : 2002.12.03
Page No. : 7/10
H3842P
HSMC Product Specification
Current Sense Circuit
Slope Compensation Techniques
Isolated MOSFET Drive and Current Transformer Sensing
Peak current (Is) is determined by the formula
Is(max.)
≈
1V/Rs
A small RC filter may be required to suppress switch transients.
R
Rs
C
2R
COMP
Is
Current
Sense
GND
1
3
5
Error Ampl.
R
1V
Current
Sense
Comparator
R1
8
Rs
5
R
4
RT
3
CT
SLOPE
H3842
Is
V
REG
RT/CT
I
SENSE
GND
R1
8
Rs
5
R
4
RT
3
CT
SLOPE
H3842
Is
V
REG
RT/CT
I
SENSE
GND
5.0Vref
+
-
+
-
+
Vcc
S
R
Q
COMP/Latch
C
R
Rs
Ns
Np
Q1
Vin
Isolation
Boundary
3
6
7
VGS Waveforms
50%DC
25%DC
Ipk=((Vpin1-1.4)/3Rs)(Ns/Np)
+
0
-
+
0
-
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