參數(shù)資料
型號(hào)： NCP1606BDR2G
廠商： ON Semiconductor
文件頁(yè)數(shù)： 17/22頁(yè)
文件大?。?/td> 245K
描述： IC POWER FACTOR CONTROLLER 8SOIC
標(biāo)準(zhǔn)包裝： 1
模式： 臨界傳導(dǎo)（CRM）
電流 - 啟動(dòng)： 20µA
電源電壓： 10.3 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： 標(biāo)準(zhǔn)包裝
其它名稱： NCP1606BDR2GOSDKR
NCP1606
http://onsemi.com
17
For the above example, this leads to:
R
OUT2
+
2.5 V
400 V * 2.5 V
@ 1.9 MW + 12.0 kW.
STATIC OVERVOLTAGE PROTECTION
If the OVP condition lasts for a long time, it may happen
that the error amplifier output reaches its minimum level
(i.e. Control = V
EAL
). It would then not be able to sink any
current and maintain the OVP fault. Therefore, to avoid any
discontinuity in the OVP disabling effect, the circuit
incorporates a comparator which detects when the lower
level of the error amplifier is reached. This event, called
static OVP, disables the output drives. Once the OVP
event is over, and the output voltage has dropped to normal,
then Control rises above the lower limit and the driver is
reenabled (Figure 35).
Figure 35. OVP Timing Diagram
Vout
Vcontrol
Icontrol
Dynamic OVP
Static OVP
IovpH
IovpL
Vout(nom)
Drive
V
EAH
V
EAL
NCP1606 Undervoltage Protection (UVP)
When the PFC stage is plugged in, the output voltage is
forced to roughly equate the peak line voltage. The
NCP1606 detects an undervoltage fault when this output
voltage is unusually low, such that the feedback voltage is
below V
UVP
 (300 mV typ). In an UVP fault, the drive
output and error amplifier (EA) are disabled. The latter is
done so that the EA does not source a current which would
increase the FB voltage and prevent the UVP event from
being accurately detected. The UVP feature helps to
protect the application if something is wrong with the
power path to the bulk capacitor (i.e. the capacitor cannot
charge up) or if the controller cannot sense the bulk voltage
(i.e. the feedback loop is open).
Furthermore, the NCP1606 incorporates a novel startup
sequence which ensures that undervoltage conditions are
always detected at startup. It accomplishes this by waiting
approximately 180 ms after V
CC
 reaches V
CC(on)
 before
enabling the error amplifier (Figure 36). During this wait
time, it looks to see if the feedback (FB) voltage is greater
than the UVP threshold. If not, then the controller enters a
UVP fault and leaves the error amplifier disabled.
However, if the FB pin voltage increases and exceeds the
UVP level, then the controller will start the application up
normally.
Figure 36. The NCP1606s Startup Sequence with
and without a UVP Fault
FB
Control
2.5 V
UVP
UVP Wait
UVP Wait
V
UVP
V
EAH
V
EAL
V
OUT(nom)
V
OUT
V
CC(off)
V
CC(on)
V
CC
UVP Fault is Removed
The voltage on the output which exits a UVP fault is
given by:
V
OUT
(UVP)
+
R
OUT1
) R
OUT2
R
OUT2
@ 300 mV
(eq. 13)
If R
OUT1
 = 1.9 MW and R
OUT2
 = 12.0 kW, then the V
OUT
UVP threshold is 48 V. This corresponds to an input voltage
of approximately 34 Vac.
Overcurrent Protection (OCP)
A dedicated pin on the NCP1606 senses the peak current
and limits the driver on time if this current exceeds
V
CS(limit)
. This level is 1.7 V (typ) on the NCP1606A and
0.5 V (typ) on the NCP1606B. Therefore, the maximum
peak current can be adjusted by changing R
SENSE
 according
to:
I
peak
+
V
CS(limit)
R
SENSE
(eq. 14)
An internal LEB filter (Figure 37) reduces the likelihood
of switching noise falsely triggering the OCP limit. This
filter blanks out the first 250 ns (typical) of the current
sense signal. If additional filtering is necessary, a small RC
filter can be added between R
SENSE
 and the CS pin.
相關(guān)PDF資料
PDF描述
NCP1607BDR2G IC PFC CONTROLLER CRM 8SOIC
NCP1611BDR2G IC PFC CTLR HE ENHANCED 8-SOIC
NCP1651DR2G IC PFC CONTROLLER CCM/DCM 16SOIC
NCP1654BD133R2G IC PFC CCM 133KHZ 8-SOIC
NCP1927DR2G IC CTLR PFC/FLYBACK 16-SOIC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NCP1606BOOSTGEVB 功能描述:電源管理IC開發(fā)工具 OSPI NCP1606 100 W BOOST 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
NCP1606BPG 功能描述:功率因數(shù)校正 IC LO CST PWR FCTR CONT 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
NCP1607BDR2G 功能描述:功率因數(shù)校正 IC CST EFCT PW FCTR CTR 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
NCP1607BOOSTGEVB 功能描述:BOARD EVAL NCP1607 100W BOOST RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估演示板和套件 系列:* 標(biāo)準(zhǔn)包裝:1 系列:PCI Express® (PCIe) 主要目的:接口，收發(fā)器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要屬性:- 次要屬性:- 已供物品:板
NCP1608BDR2G 功能描述:功率因數(shù)校正 IC COST EFFECT PWR FACT CONT 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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)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(gòu)。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(gòu)。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(gòu)

我的聯(lián)系方式

*
*
*