參數(shù)資料
型號(hào)： NCP1654BD133R2G
廠商： ON Semiconductor
文件頁數(shù)： 15/23頁
文件大?。?/td> 228K
描述： IC PFC CCM 133KHZ 8-SOIC
標(biāo)準(zhǔn)包裝： 2,500
模式： 連續(xù)導(dǎo)電（CCM）
頻率 - 開關(guān)： 120kHz ~ 146kHz
電流 - 啟動(dòng)： 75µA
電源電壓： 9 V ~ 20 V
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 8-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 8-SOICN
包裝： 帶卷 (TR)
其它名稱： 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.
相關(guān)PDF資料
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NCP1654BD200R2G 功能描述:功率因數(shù)校正 IC NCP1654 - 200KHZ RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
NCP1654BD65R2G 功能描述:功率因數(shù)校正 IC NCP1654-65K-B-SOIC RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
NCP1654BP65G 功能描述:功率因數(shù)校正 IC NCP1654-65K-B-PDIP RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
NCP1654PFCGEVB 功能描述:電源管理IC開發(fā)工具 NCP1654 PWR FACT CONT EVB RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓: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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*