收藏本站
NCL30001
a fault event. Figure 50 shows double hiccup mode
operation. A soft ? start sequence is initiated the second time
V CC reaches V CC(on) . If the controller is latched upon
reaching V CC(on) , the controller stays in hiccup mode.
During this mode, V CC never drops below V CC(reset) , the
controller logic reset level. This prevents latched faults to be
cleared unless power to the controller is completely
removed (i.e. unplugging the supply from the AC line).
V CC
V CC(on)
V CC(off)
t
DRV
t
Fault Timer
(internal)
Overload
applied
t
t OVLD
Figure 50. V CC Double Hiccup Operation with a Fault Occurring while the Startup Circuit is Disabled
An internal supervisory circuit monitors the V CC voltage
to prevent the controller from dissipating excessive power
if the V CC pin is accidentally grounded. A lower level
current source (I inhibit ) charges C CC from 0 V to V inhibit ,
typically 0.85 V. Once V CC exceeds V inhibit , the startup
current source is enabled. This behavior is illustrated in
Figure 51. This slightly increases the total time to charge
V CC , but it is generally not noticeable.
Figure 51. Startup Current at Various V CC Levels
The rectified ac line voltage is provided to the power stage
to achieve accurate PFC. Filtering the rectified ac line
voltage with a large bulk capacitor distorts the PFC in a
single stage PFC converter. A peak charger is needed to bias
the HV pin as shown in Figure 52. Otherwise, the HV pin
follows the ac line and the startup circuit is disabled every
time the ac line voltage approaches 0 V. The V CC capacitor
is sized to bias the controller during power up.
http://onsemi.com
20
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
NCP102MBGEVB EVAL BOARD FOR NCP102MBG
NCP1081SPCGEVB EVAL BOARD FOR NCP1081SPCG
NCP1083QBCGEVB EVAL BOARD FOR NCP1083QBCG
NCP1083WIRGEVB EVAL BOARD FOR NCP1083WIRG
NCP1521BEVB EVAL BOARD FOR NCP1521B
NCP1523BGEVB EVAL BOARD FOR NCP1523BG
NCP1605FORWGEVB EVAL BOARD FOR NCP1605FORWG
NCP1840Q8A6MNTWG IC LED DRIVER 12CH PROGR 20QFN
相关代理商/技术参数
NCL30001DR2G-CUT TAPE 制造商:ON 功能描述:NCL30001 Series 11.3 V Isolated Step-Down Single Stage Power Factor - SOIC-16
NCL30001LEDGEVB 功能描述:LED 照明开发工具 Programmers Development RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装:
NCL30002 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Power Factor Corrected Buck LED Driver
NCL30002DIM1GEVB 制造商:ON Semiconductor 功能描述:120V DIMMABLE HPF BUCK - Bulk
NCL30002DIM2GEVB 制造商:ON Semiconductor 功能描述:230V DIMMABLE HPF BUCK - Bulk
NCL30002DR2G 功能描述:LED照明驱动器 Power Factor Offline Buck LED Driver RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
NCL30002LED1GEVB 制造商:ON Semiconductor 功能描述:90-135VAC HPF BUCK DRIVER - Bulk
NCL30002LED2GEVB 制造商:ON Semiconductor 功能描述:220/240VAC HPF BUCK DRIVE - Bulk