- 您现在的位置：买卖IC网 > Datasheet目录45 > NCP1654BD133R2G (ON Semiconductor)IC PFC CCM 133KHZ 8-SOIC Datasheet资料下载
参数资料
| 型号： | NCP1654BD133R2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 15/23页 |
| 文件大小： | 228K |
| 描述： | IC PFC CCM 133KHZ 8-SOIC |
| 标准包装： | 2,500 |
| 模式： | 连续导电（CCM） |
| 频率 - 开关： | 120kHz ~ 146kHz |
| 电流 - 启动： | 75µA |
| 电源电压： | 9 V ~ 20 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： | 带卷 (TR) |
| 其它名称： | NCP1654BD133R2G-ND NCP1654BD133R2GOSTR |
NCP1654
http://onsemi.com
15
R
boL
is low side resistor of the dividing resistors between
V
in
and BO pin.
R
boU
is upper side resistor of the dividing resistors between
V
in
and BO pin.
Figure 37. Current Sensing
Gnd
+
R
SENSE
I
L
R
CS
I
CS
CS
V
CS
NCP1654
+
I
L
Refer to Figure 37, sense current I
cs
is proportional to the
inductor current I
L
as described in (Equation 11). I
L
consists of the highfrequency component (that depends on
di/dt or inductor L) and lowfrequency component (that is
I
L50
).
(eq. 11)
I
cs
+
R
SENSE
R
CS
I
L
where
R
SENSE
is the sense resistor to sense I
L
.
R
CS
is the offset resistor between CS pin and R
SENSE
.
Figure 38. V
control
LowPass Filtering
+
-
V
REF
OTA
6
5
V
control
?0 mA
V
out
+
+
V
CONTROL(min)
To Vm Pin
V
fb
R
Z
C
Z
C
P
R
fbL
R
fbU
V
in
Refer to Figure 38, the Operational Transconductance
Amplifier (OTA) senses V
out
via the feedback resistor
dividers, R
fbU
and R
fbL
. The OTA constructs a control
voltage, V
control
, depending on the output power and hence
V
out
. The operating range of V
control
is from
V
CONTROL(min)
to V
CONTROL(max)
. The signal used for
PFC duty modulation is after decreasing a offset voltage,
V
CONTROL(min)
, i.e. V
control
V
CONTROL(min)
.
This control current I
control
is a roughly constant current
that comes from the PFC output voltage V
out
that is a slowly
varying signal. The bandwidth of I
control
can be
additionally limited by inserting the external type2
compensation components (that are R
Z
, C
Z
, and C
P
as
shown in Figure 38). It is recommended to limit f
control
, that
is the bandwidth of V
control
(or I
control
), below 20 Hz
typically to achieve power factor correction purpose.
The transformer of V
out
to V
control
is as described in
(Equation 12) if C
Z
is >> C
P
. G
EA
is the error amplifier gain.
V
control
V
out
+
R
fbL
@ G
EA
R
Z
R
fbL
) R
fbU
@
1 ) sR
Z
C
Z
sR
Z
C
Z
(1 ) sR
Z
C
P
)
(eq. 12)
From (Equation 7) (Equation 11), the input impedance
Z
in
is reformulated in (Equation 13).
Z
in
+
2
R
M
R
SENSE
V
out
V
ac
K
BO
I
L
2pR
CS
@ (V
control
* V
CONTROL(min)
) @ V
REF
I
L*50
(eq. 13)
When I
L
is equal to I
L50
, (Equation 13) is reformulated
in (Equation 14)
Z
in
+
2
R
M
R
SENSE
V
out
V
ac
K
BO
2pR
CS
@ (V
control
* V
CONTROL(min)
) @ V
REF
(eq. 14)
The multiplier capacitor C
M
is the one to filter the
highfrequency component of the multiplier voltage V
m
.
The highfrequency component is basically coming from
the inductor current I
L
. On the other hand, the filter
capacitor C
filter
similarly removes the highfrequency
component of inductor current I
L
. If the capacitors C
M
and
C
filter
match with each other in terms of filtering capability,
I
L
becomes I
L50
. Input impedance Z
in
is roughly constant
over the bandwidth of 50 or 60 Hz and power factor is
corrected.
相关PDF资料 |
PDF描述 |
|---|---|
| NCP1927DR2G | IC CTLR PFC/FLYBACK 16-SOIC |
| NCP380HMU21AATBG | IC CURRENT LIMIT SWITCH 6-UDFN |
| NCT1008DMT3R2G | TMP DIO MON/SMBUS 4CH 8WDFN |
| NCT210RQR2G | IC TEMP SENSOR LOC/REM 16QSOP |
| NCT214MT3R2G | IC TEMP SENSOR LOC/REM 10WDFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP1654BD200R2G | 功能描述:功率因数校正 IC NCP1654 - 200KHZ RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| NCP1654BD65R2G | 功能描述:功率因数校正 IC NCP1654-65K-B-SOIC RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| NCP1654BP65G | 功能描述:功率因数校正 IC NCP1654-65K-B-PDIP RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| NCP1654PFCGEVB | 功能描述:电源管理IC开发工具 NCP1654 PWR FACT CONT EVB RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| NCP1729-SKT | 制造商:P&S 功能描述:Sample Kit, including Two NCP1729SN35T1 and A Development Source CD-ROM 制造商:P&S 功能描述:Sample Kit,including Two NCP1729SN35T1 and A Development Source CD-ROM |
发布紧急采购，3分钟左右您将得到回复。