- 您現在的位置：買賣IC網 > Datasheet目錄45 > NCP1651DR2G (ON Semiconductor)IC PFC CONTROLLER CCM/DCM 16SOIC Datasheet資料下載
參數資料
| 型號： | NCP1651DR2G |
| 廠商： | ON Semiconductor |
| 文件頁數： | 29/32頁 |
| 文件大小： | 779K |
| 描述： | IC PFC CONTROLLER CCM/DCM 16SOIC |
| 標準包裝： | 1 |
| 模式： | 連續導電（CCM），間歇導電（DCM） |
| 頻率 - 開關： | 25kHz ~ 250kHz |
| 電流 - 啟動： | 8.5mA |
| 電源電壓： | 10 V ~ 18 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 16-SOIC |
| 包裝： | 標準包裝 |
| 其它名稱： | NCP1651DR2GOSDKR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁當前第29頁第30頁第31頁第32頁
NCP1651
http://onsemi.com
29
Loop Compensation
Figure 43. Voltage Regulation Loop
--
+
REFERENCE
MULTIPLIER
PWM
OUT
1
LOGIC
V
ref2
4 V
I
S+
Q1
5
C.S. Amp
--
+
25 k
AC
ERROR
AMP
R
S
R
7
7
I
avg
V
ref
DIVIDER
ERROR AMP
REFERENCE SIGNAL
MODULATOR AND OUTPUT STAGE
V2
V
o
=
R
dc2
R
dc1
+ R
dc2
f
z
=
1
2 ?C
fb
R
fb
A
v
=
1
2 ?f C
fb
R
dc1
擵
ref
擵
fb
= 2.66 V
ac
V
ac
=
V
line
R
ac2
R
ac1
+ R
ac2
擵
out
擨
in
=
r
N
p
N
s
u
?R
L
r
T t
on
t
on
u
R
dc1
R
dc2
f
p
=
1
2 ?R
L
C
R
ac1
R
L
C
V
o
V
ac
V?/DIV>
V
line
I
in
N
p
: N
s
R
ac2
C
10
10
Ref Fltr
--
+
R
opto
R
fb
C
fb
ERROR
AMP
V
ea
0.022 mF
C
8
6.5 V
3.8 k
OPTO TRANSFER
擵
fb
擵
ea
=
3.8 k CTR
R
opto
A
v
= R
fb
R
dc1
for f > f
z
:
for f < f
z
:
擨
in
擵
ref
=
R
7
R
S
75,000
V
fb
FB/SD
8
Loop Model
Themodelforthevoltageloophasbeenbrokendowninto
six sections. The voltage divider, error amplifier, and opto
Transfer are external to the chip, and the reference signal,
modulator and output stage are internal.
The modulator and output stage circuitry is greatly
simplifiedbasedontheassumptionthatthatpolesandzeros
in the current feedback loop are considerably greater than
the bandwidth of the overall loop. This should be a good
assumption, because a bandwidth in the kilohertz is
necessaryforagoodcurrentwaveform,andthevoltageerror
amplifier needs to have a bandwidth of less than the lowest
line frequency that will be used.
There are two poles in this circuit. The output filter has a
pole that varies with the load. The pole on the voltage error
amplifier will be determined by this analysis.
Voltage Divider
The voltage divider is located on the secondary side
circuitry. It is a simple resistive divider that reduces the
outputvoltagetothelevelrequiredbytheinternalreference
on the voltage error amplifier. If the amplifier circuit of
Figure 42 is used, there are four resistors instead of 2. To
determine the gain of this circuit, R
dc1
is the equivalent of
the upper two resistors, 9.31 k and 453 Ohms respectively,
andR
dc2
istheequivalentofthelowertworesistors,422and
5.23 k respectively.
Voltage Error Amplifier
The voltage error amplifier is constrained by the two
equations. When this amplifier is compensated with a
pole- -zero pair, there will be a unity gain pole which will be
cancelled by the zero at frequency f
z
. The corresponding
bode plot would be:
Figure 44. Pole- -zero Bode Plot
f, FREQUENCY
20
0
- -20
Unity Gain
A
V
f
z
The gain at frequencies greater than f
z
is determined by
R
fb
. Once R
fb
is determined, the value of C
fb
can be easily
calculated using the formula for f
z
.
相關PDF資料 |
PDF描述 |
|---|---|
| NCP1654BD133R2G | IC PFC CCM 133KHZ 8-SOIC |
| 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 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| NCP1652ADR2G | 功能描述:功率因數校正 IC ANA PFC CONTROLLER RoHS:否 制造商:Fairchild Semiconductor 開關頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| NCP1652DR2G | 功能描述:功率因數校正 IC ANA PFC CONTROLLER RoHS:否 制造商:Fairchild Semiconductor 開關頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| NCP1652DWR2G | 功能描述:功率因數校正 IC ANA PFC CONTROLLER RoHS:否 制造商:Fairchild Semiconductor 開關頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| NCP1652L48VGEVB | 功能描述:電源管理IC開發工具 100W PFC 48V FIXED VOLTAGE RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| NCP1653ADR2 | 功能描述:功率因數校正 IC Fixed Frequency RoHS:否 制造商:Fairchild Semiconductor 開關頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
發布緊急采購，3分鐘左右您將得到回復。