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| 型号： | NCP1601ADR2 |
| 厂商： | ON Semiconductor |
| 文件页数： | 17/19页 |
| 文件大小： | 257K |
| 描述： | IC CTRLR PFC FREQ DCM/CRM 8SOIC |
| 产品变化通告： | Discontinuation 30/Jun/2006 |
| 标准包装： | 1 |
| 模式： | 临界传导（CRM），间歇式（转换） |
| 频率 - 开关： | 58kHz |
| 电流 - 启动： | 17µA |
| 电源电压： | 12.5 V ~ 18 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 剪切带 (CT) |
| 其它名称： | NCP1601ADR2OSCT |
NCP1601A, NCP1601B
http://onsemi.com
17
Appendix I Summary of Equations in NCP1601 Boost PFC
Description
Critical Mode (CRM)
Discontinuous Mode (DCM)
Boost converter
V
out
V
in
=
t
1
+ t
2
t
2
V
out
V
in
=
t
1
+ t
2
t
2
?/DIV>
V
out
V
in
V
out
=
t
1
t
1
+ t
2
?/DIV>
V
out
V
in
V
out
=
t
1
t
1
+ t
2
Input current averaged by
filter capacitor
I
in
=
I
pk
2
I
in
=
t
1
+ t
2
T
I
pk
2
Voltage for on time V
ton
V
ton
= V
control
V
ton
=
T
t
1
+ t
2
V
control
MOSFET on- -time t
1
?SPAN class="pst NCP1601BDR2G_2636593_4"> t
1
is constant for unity PFC
?SPAN class="pst NCP1601BDR2G_2636593_4"> V
control
is constant for unity PFC
t
1
=
C
ramp control
I
ch
t
1
=
LI
pk
V
in
,or
?SPAN class="pst NCP1601BDR2G_2636593_4"> t
1
(t
1
+ t
2
) is constant for unity PFC
?SPAN class="pst NCP1601BDR2G_2636593_4"> V
control
is constant for unity PFC
t
1
=
V
out
V
in
V
out
T
C
ramp
V
control
I
ch
R
t
1
=
LI
pk
V
in
,or
Switching period
t
1
+ t
2
=
V
out
V
out
V
in
C
ramp
V
control
I
ch
,or
t
1
+ t
2
=
V
out
V
out
V
in
LI
pk
V
in
t
1
+ t
2
=
T
t
1
C
ramp
V
control
I
ch
,or
t
1
+ t
2
=
V
out
V
out
V
in
T
C
ramp
V
control
I
ch
R
Minimum Inductor for
CRM
L > L
(CRM)
=
V
out
V
in
V
out
V
in
I
pk
1
f
Same as CRM
Input impedance
Z
in
=
2LI
ch
C
ramp
V
control
Same as CRM
Input power
P
in
=
V
ac
2
C
ramp
V
control
2LI
ch
Same as CRM
Output power
P
out
= 稰
in
=
?/DIV>
V
ac
2
C
ramp
V
control
2LI
ch
Same as CRM
Maximum input power
when V
control
= 1 V
P
in_max
=
V
ac
2
C
ramp
2LI
ch
Same as CRM
Minimum ramp capacitor
when V
control
= 1 V
C
ramp
>
P
in
V
ac
2
?2LI
ch
Same as CRM
Control voltage V
control
V
ctrl
=
2LI
ch
P
in
C
ramp
V
ac
2
Same as CRM
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