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参数资料
| 型号： | ADM1070 |
| 厂商： | Analog Devices, Inc. |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | -48 V Hot Swap Controller |
| 中文描述： | -48 V热风热插拔控制器 |
| 文件页数： | 12/16页 |
| 文件大小： | 367K |
| 代理商： | ADM1070 |
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
10.00V
CH1
CH3
100mV
M 500 s
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 ADM1070’s operation in an overvoltage situation.
GATE
SENSE
V
UV/OV
CH2
10.00V
1.00V
CH1
CH3
100mV
M 200 s
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 ADM1070’s
operation in an undervoltage situation.
GATE
SENSE
V
UV/OV
CH2
10.0V
1.00V
CH1
CH3
100mV
M 200ms
Figure 8. Timing Waveforms Associated with an
Undervoltage Glitch
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM1070ART | 制造商:AD 制造商全称:Analog Devices 功能描述:-48 V Hot Swap Controller |
| ADM1070ART-REEL | 制造商:Analog Devices 功能描述:Hot Swap Controller 1-CH -80V 6-Pin SOT-23 T/R 制造商:Analog Devices 功能描述:6-PIN -48V HOT SWAP CONTROLLER I.C. - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:6-PIN -48V HOT SWAP CONTROLLER I.C. - Tape and Reel |
| ADM1070ART-REEL7 | 功能描述:IC CTRL HOTSWAP -48 SOT23-6 RoHS:否 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 |
| ADM1070ARTZ-REEL | 功能描述:IC CTRLR HOTSWAP -48V SOT23-6 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 |
| ADM1070ARTZ-REEL7 | 功能描述:IC CTRLR HOTSWAP -48V SOT23-6 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 |
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