- 您現在的位置：買賣IC網 > Datasheet目錄45 > NCP1603D100R2G (ON Semiconductor)IC CTLR PFC/PWM COMBO 16-SOIC Datasheet資料下載
參數資料
| 型號： | NCP1603D100R2G |
| 廠商： | ON Semiconductor |
| 文件頁數： | 22/30頁 |
| 文件大?。?/td> | 302K |
| 描述： | IC CTLR PFC/PWM COMBO 16-SOIC |
| 產品變化通告： | Product Discontinuation 21/Jun/2007 |
| 標準包裝： | 2,500 |
| 模式： | 臨界傳導（CRM），間歇導電（DCM） |
| 頻率 - 開關： | 58kHz |
| 電流 - 啟動： | 17µA |
| 電源電壓： | 9 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： | 帶卷 (TR) |
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頁當前第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁
NCP1603
http://onsemi.com
22
DCM needs higher peak inductor current comparing to
CRM in the same averaged input current. Hence, CRM is
generally preferred at around the sinusoidal peak for lower
the maximum current stress but DCM is also preferred at
the nonpeak region to avoid excessive switching
frequencies. Because of the variablefrequency feature of
the CRM and constantfrequency feature of DCM,
switching frequency is the maximum in the DCM region
and hence the minimum switching frequency will be found
at the moment of the sinusoidal peak.
DCM PFC Circuit
A DCM/CRM PFC boost converter is shown in
Figure 58. Input voltage is a rectified 50 or 60 Hz
sinusoidal signal. The MOSFET is switching at a high
frequency (typically around 100 kHz) so that the inductor
current I
L
basically consists of highfrequency and
lowfrequency components.
Figure 58. DCM/CRM PFC Boost Converter
V
in
I
in
I
L
L
V
out
C
bulk
C
filter
Filter capacitor C
filter
is an essential and very small value
capacitor in order to eliminate the highfrequency content
of the DCM inductor current I
L
. This filter capacitor cannot
be too bulky because it can pollute the power factor by
distorting of the rectified sinusoidal input voltage.
PFC Methodology
The PFC section uses a proprietary PFC methodology
particularly designed for both DCM and CRM operation.
The PFC methodology is described in this section.
Figure 59. Inductor Current in DCM
t
1
t
2
t
3
I
pk
T
time
Inductor Current
As shown in Figure 59, the inductor current I
L
of each
switching cycle starts from zero in DCM. CRM is a special
case of DCM when t
3
= 0. When the PFC boost converter
MOSFET is on, the inductor current I
L
increases from zero
to I
pk
for a time duration t
1
with inductance L and input
voltage V
in
. Equation 3 is formulated.
V
in
+ L
I
pk
t
1
(eq. 3)
The input filter capacitor C
filter
and the frontended EMI
filter absorb the highfrequency component of inductor
current. It makes the input current I
in
a lowfrequency
signal.
I
in
+
I
pk
(t
1
) t
2
)
2 T
for DCM
(eq. 4)
I
in
+
I
pk
2
for CRM
(eq. 5)
From Equations 3, 4, and 5, the input impedance Z
in
is
formulated.
Z
in
+
V
in
I
in
+
2TL
t
1
(t
1
) t
2
)
for DCM
(eq. 6)
Z
in
+
V
in
I
in
+
2L
t
1
for CRM
(eq. 7)
Power factor is corrected when the input impedance Z
in
in Equations 6 and 7 are constant or slowly varying.
Figure 60. PFC Modulation Circuit and Timing
Diagram
+
closed when
output low
Turns off
MOSFET
Ramp
12
C
ramp
I
ch
V
ton
V
ton
ramp
out1
PWM
Comparator
The MOSFET on time t
1
of PFC modulation duty is
generated by a feedback signal V
ton
and a ramp. The PFC
modulation circuit and timing diagram are shown in
Figure 60. A relationship in Equation 8 is obtained.
t
1
+
C
ramp
V
ton
I
ch
(eq. 8)
The charging current I
ch
is constant 100 mA current and
the ramp capacitor C
ramp
is constant for a particular design.
Hence, according to Equation 8, the MOSFET on time t
1
is proportional to V
ton
.
In order to protect the PFC modulation comparator, the
maximum voltage of V
ton
is limited to internal clamp
V
ton(max)
(3.9 V typical) and the ramp pin (Pin 12) is with
相關PDF資料 |
PDF描述 |
|---|---|
| NCP1605DR2G | IC PFC CONTROLLER CCM/DCM 16SOIC |
| NCP1606BDR2G | IC POWER FACTOR CONTROLLER 8SOIC |
| NCP1607BDR2G | IC PFC CONTROLLER CRM 8SOIC |
| NCP1611BDR2G | IC PFC CTLR HE ENHANCED 8-SOIC |
| NCP1651DR2G | IC PFC CONTROLLER CCM/DCM 16SOIC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| NCP1605ADR2G | 功能描述:功率因數校正 IC ENHANCED PFC CNTRLER 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 |
| NCP1605BDR2G | 功能描述:功率因數校正 IC High Volt Stby Mode Power Fact Corr Cont 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 |
| NCP1605DR2G | 功能描述:功率因數校正 IC Enhanced PFC HV and Eff Standby 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 |
| NCP1605FORWGEVB | 功能描述:電源管理IC開發工具 NCP1605 152 W FORWARD EVB 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 |
| NCP1605LCDTVGEVB | 功能描述:BOARD EVAL NCP1605/1396 RoHS:是 類別:編程器，開發系統 >> 評估演示板和套件 系列:* 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- 主要目的:電源管理，電池充電器 嵌入式:否 已用 IC / 零件:MAX8903A 主要屬性:1 芯鋰離子電池 次要屬性:狀態 LED 已供物品:板 |
發布緊急采購，3分鐘左右您將得到回復。