- 您现在的位置：买卖IC网 > PDF目录17306 > NCP1380BGEVB (ON Semiconductor)BOARD EVAL NCP1380B 19V QR CTLR PDF资料下载
参数资料
| 型号： | NCP1380BGEVB |
| 厂商： | ON Semiconductor |
| 文件页数： | 24/26页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL NCP1380B 19V QR CTLR |
| 设计资源： | NCP1380BGEVB Schematic NCP1380BGEVB Gerber Files NCP1380BGEVB BOM |
| 标准包装： | 1 |
| 系列： | * |
| 其它名称： | NCP1380BGEVBOS |
NCP1380
OVERVOLTAGE PROTECTION/BROWN?OUT (C AND D VERSIONS)
The C and D versions of NCP1380 combine brown?out
and overvoltage detection on pin 7.
HV?Bulk
VCC
noi s e de l a y
+
S
DRV
Rbou
Dz
VOVP
?
S
Q
La tc h
Q
Q
OVP/BO
Q
7
VDD
IBO
gr a nd
R
R
Rbol
noi s e de l a y
reset
Rc l a mp
CS c omp
BO reset
Vclamp
VBO
Figure 43. Brown?out and Overvoltage Protection
In order to protect the power supply against low input
voltage condition, the pin 7 permanently monitors a fraction
of the bulk voltage through a voltage divider. When this
image of bulk voltage is below the V BO threshold, the
controller stops switching. When the bulk voltage comes
when V CC reaches V CC(on) (Figure 44): this ensures a clean
startup sequence with soft?start. The hysteresis for the
brown?out function is implemented with a high side current
source sinking 10 m A when the brown?out comparator is
high (V bulk < V bulk(on) )
back within safe limits, the circuit will restart pulsing only
Figure 44. Brown?out Operating Chronograms
In order to avoid having a too high voltage on pin 7 if the
bulk voltage is high, an internal clamp limits the voltage.
In case of overvoltage, the zener diode will start to
conduct and inject current inside the internal clamp resistor
R clamp thus causing pin 7 voltage to increase. When this
voltage reaches V OVP , the controller latches?off and stays
latched until the user cycles down the power supply
(Figure 45).
http://onsemi.com
24
相关PDF资料 |
PDF描述 |
|---|---|
| 0210200055 | CABLE FLAT FLEX 3" .50MM 6 POS |
| REC5-2412DRW/H2/C | CONV DC/DC 5W 18-36VIN +/-12VOUT |
| F910J227MCC | CAP TANT 220UF 6.3V 20% 2312 |
| EBC25DCAI-S189 | CONN EDGECARD 50POS R/A .100 SLD |
| F910J157MCC | CAP TANT 150UF 6.3V 20% 2312 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP1380CDR2G | 功能描述:电流型 PWM 控制器 QUASI-RES CUR MODE CONTRL RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| NCP1380DDR2G | 功能描述:电流型 PWM 控制器 QUASI-RES CUR MODE CONTRL RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| NCP1380DGEVB | 功能描述:电源管理IC开发工具 NCP1380D 19V QR Controller RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| NCP1381 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Low−Standby High Performance PWM Controller |
| NCP1381 AM90 WAF | 制造商:ON Semiconductor 功能描述: |
发布紧急采购，3分钟左右您将得到回复。