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| 型号： | NCP1611BDR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 24/29页 |
| 文件大小： | 879K |
| 描述： | IC PFC CTLR HE ENHANCED 8-SOIC |
| 标准包装： | 3,000 |
| 系列： | * |
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NCP1611
http://onsemi.com
24
Hence, the maximum power that can be delivered by the
PFC stage is:
P
in,avg
max
+
V
in,rms
2
@ T
ON(LL)
2 @ L
at low line
P
in,avg
max
+
V
in,rms
2
@ T
ON(HL)
2 @ L
at high line
Figure 65. PWM circuit and timing diagram.
Figure 66. V
TON
Processing Circuit. The integrator OA1 amplifies the error between V
REGUL
and IN1 so that on
average, (V
TON
* (t
1
+t
2
)/T) equates V
REGUL
.
Remark:
The V
ton
processing circuit is informed when a
condition possibly leading to a long interruption of the drive
activity (functions generating the STOP signal that disables
the drive see block diagram except OCP, i.e., OVP,
OverStress, SKIP, staticOVP and OFF). Otherwise, such
situations would be viewed as a normal deadtime phase and
V
ton
would inappropriately overdimension V
ton
to
compensate it. Instead, as illustrated in Figure 66, the V
ton
signal is grounded leading to a short softstart when the
circuit recovers.
Regulation Block and Output Voltage Control
A transconductance error amplifier (OTA) with access to
the inverting input and output is provided. It features a
typical transconductance gain of 200 mS and a maximum
capability of ?0 mA. The output voltage of the PFC stage
is typically scaled down by a resistors divider and monitored
by the inverting input (pin 8). Bias current is minimized
(less than 500 nA) to allow the use of a high impedance
feedback network. However, it is high enough so that the
pin remains in low state if the pin is not connected.
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相关代理商/技术参数 |
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| NCP1611GEVB | 制造商:ON Semiconductor 功能描述:PG - ACDC CONVERSION - Bulk 制造商:ON Semiconductor 功能描述:EVAL BOARD, NCP1611, POWER FACTOR CORRECTION; Silicon Manufacturer:On Semiconductor; Silicon Core Number:NCP1611; Kit Application Type:Power Management; Application Sub Type:Power Factor Correction (PFC) ;RoHS Compliant: Yes |
| NCP1612ADR2G | 功能描述:功率因数校正 IC 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 |
| NCP1612BDR2G | 制造商:ON Semiconductor 功能描述:ENHANCED HIGH-EFFICIENCY - Tape and Reel |
| NCP1612GEVB | 制造商:ON Semiconductor 功能描述:PG - ACDC CONVERSION - Bulk 制造商:ON Semiconductor 功能描述:EVAL BOARD, NCP1612, POWER FACTOR CORRECTION; Silicon Manufacturer:On Semiconductor; Silicon Core Number:NCP1612; Kit Application Type:Power Management; Application Sub Type:Power Factor Correction (PFC) ;RoHS Compliant: Yes |
| NCP1615ADR2G | 制造商:ON Semiconductor 功能描述:HV HIGH EFFICIENCY PFC CO - Tape and Reel |
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