收藏本站
REV. 0
12
ADM1070
FUNCTIONALITY AND TIMING
Live Insertion
The timing waveforms associated with the live insertion of a
plug-in board using the ADM1070 are shown in the following
figures. When the board connects the GND-V
EE
 potential
climbs to 48 V. As this voltage is applied, the voltage at the V
IN
Pin ramps above the undervoltage lockout (V
LKO
) of 8.5 V to a
constant 12.3 V and is held at this level with the shunt resistor
and external resistor combination at the V
IN
 Pin.
When UV/OV crosses the undervoltage rising threshold of
0.91 V, it is now inside the operating voltage window and the
48 V supply must be applied to the load. After a time delay,
t
POR
, the ADM1070 begins to ramp up the gate drive. When the
voltage on the SENSE Pin reaches 100 mV (the analog current
limit) the gate drive is held constant. When the board capaci-
tance is fully charged, the sense voltage begins to drop below
the analog current limit voltage and the gate voltage is free to
ramp up further. The gate voltage eventually reaches its maxi-
mum value of 12.3 V (as set by V
IN
).
GND-V
EE
 t
POR
V
IN
UV/OV
GATE
SENSE
V
OUT
V
LKO
V
UVR
Figure 5. Timing Waveforms Associated with a
Live Insertion Event
GATE
SENSE
V
OUT
CH2
5.00V
CH1
10.00V
CH3
100mV M 500s   CH1
2.8V
T
T
Figure 6. Start-Up Sequence
OVERVOLTAGE AND UNDERVOLTAGE
The waveforms for an overvoltage glitch are shown below.
When UV/OV glitches above the overvoltage rising threshold of
1.97 V, an overvoltage condition is detected and the gate volt-
age is pulled low. UV/OV begins to drop a back toward the
operating voltage window and the gate drive is restored when
the overvoltage falling threshold of 1.93 V is reached. Figure 7
illustrates the ADM1070s operation in an overvoltage situation.
GATE
SENSE
V
UV/OV
CH2
10.00V
CH1
1.00V
CH3
100mV M 200s   CH3
1.96V
T
T
Figure 7. Timing Waveforms Associated with an
Overvoltage Glitch
An undervoltage glitch is dealt with in a similar way. When
V
UV/OV
 falls below the undervoltage falling threshold of 0.86 V,
the gate voltage is pulled low. If UO/UV subsequently rises
back above the undervoltage rising threshold of 0.91 V, then the
gate voltage is restored. Figure 8 illustrates the ADM1070s
operation in an undervoltage situation.
GATE
SENSE
V
UV/OV
CH2
10.0V
CH1
1.00V
CH3
100mV M 200ms
Figure 8. Timing Waveforms Associated with an
Undervoltage Glitch
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
ADM1073ARU-REEL IC CTRLR HOTSWAP -48V 14TSSOP
ADM4210-2AUJZ-RL7 IC CTLR HOTSWAP LV TSOT23-6
ADVFC32SH IC CONV V/F F/V MONO TO100-10
FAN4800ASNY IC CTLR COMBO PFC/PWM 16-DIP
FAN4800AUN IC PWM/PFC CTLR COMBO 16-MDIP
FAN4800CUN IC PWM/PFC CTLR COMBO 16-MDIP
FAN4802MY IC PFC CTRLR AVERAGE CURR 16SOP
FAN4802SNY IC CTLR PFC/PWM COMBO 16-PDIP
相关代理商/技术参数
ADM1070EB 制造商:AD 制造商全称:Analog Devices 功能描述:ADM1070 Hot Swap Controller Evaluation Kit Documentation
ADM1072 制造商:AD 制造商全称:Analog Devices 功能描述:Dual, USB 2.0 Full/Standby Power Controller with Supply Steering
ADM1072ARQ 制造商:AD 制造商全称:Analog Devices 功能描述:Dual, USB 2.0 Full/Standby Power Controller with Supply Steering
ADM1073 制造商:AD 制造商全称:Analog Devices 功能描述:Full-Feature −48 V Hot Swap Controller
ADM1073ARU 功能描述:IC CTRLR HOTSWAP -48V 14TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V，12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF)
ADM1073ARU-REEL 功能描述:IC CTRLR HOTSWAP -48V 14TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件
ADM1073ARU-REEL7 制造商:Analog Devices 功能描述:Hot Swap Controller 1-CH -80V 14-Pin TSSOP T/R 制造商:Analog Devices 功能描述:FULL FEATURED -48V HOT SWAP CTRL'R I.C. - Tape and Reel
ADM1073ARUZ 功能描述:IC HOTSWAP CTRLR -48V 14-TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件