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参数资料
| 型号： | ADM4210 |
| 厂商： | Analog Devices, Inc. |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | Hot Swap Controller in 6-Lead TSOT Package |
| 中文描述： | 热插拔控制器的6引脚TSOT封装 |
| 文件页数： | 13/16页 |
| 文件大小： | 237K |
| 代理商： | ADM4210 |
ADM4210
CIRCUIT BREAKER TIMING CYCLE
When the voltage across the sense resistor exceeds the circuit
breaker trip voltage, the 60 μA timer pull-up current is activated.
If the sense voltage falls below this level before the TIMER pin
reaches 1.3 V, the 60 μA pull-up is disabled and the 2 μA pull-
down is enabled. This is likely to happen if the overcurrent fault
is only transient, such as an inrush current. This is shown in
Figure 31. However, if the overcurrent condition is continuous
and the sense voltage remains above the circuit breaker trip
voltage, the 60 μA pull-up remains active. This allows the TIMER
pin to reach the high trip point of 1.3 V and initiate the GATE
shutdown. On the ADM4210-2, the TIMER pin continues pulling
up but switches to the 5 μA pull-up when it reaches the 1.3 V
threshold. The device can be reset by toggling the ON-CLR pin
or by manually pulling the TIMER pin low. On the ADM4210-1,
the TIMER pin activates the 2 μA pull-down once the 1.3 V
threshold is reached, and continues to pull down until it reaches
the 0.2 V threshold. At this point, the 100 μA pull-down is
activated and the GATE pin is enabled. The device keeps
retrying in the manner as shown in Figure 32.
Rev. 0 | Page 13 of 16
AUTOMATIC RETRY OR LATCHED OFF
The ADM4210 is available in two models. The ADM4210-1
has an automatic retry system whereby when a current fault is
detected, the FET is shut down after a time determined by the
timer capacitor, and it is switched on again in a controlled con-
tinuous cycle to determine if the fault remains (see Figure 32
for details). The period of this cycle is determined by the timer
capacitor at a duty cycle of 3.8% on and 96.2% off.
The ADM4210-2 model has a latch off system whereby when a
current fault is detected, the GATE is switched off after a time
determined by the timer capacitor (see Figure 33 for details).
Toggling the ON-CLR pin, or pulling the TIMER pin to GND
for a brief period, resets this condition.
5μA
COMP1
COMP2
SHORT-
CIRCUIT
EVENT
60μA
V
TIMER
V
OUT
V
GSFET
I
RSENSE
0
The duty cycle of this automatic retry cycle is set to the ratio of
2 μA/60 μA, which approximates 3.8% on. The value of the
timer capacitor determines the on time of this cycle. This time
is calculated as follows:
t
ON
= 1.3 ×
C
TIMER
/60 μA
t
OFF
= 1.1 ×
C
TIMER
/2 μA
2μA
COMP1
COMP2
SHORT-
CIRCUIT
EVENT
60μA
100μA
V
TIMER
V
OUT
V
GSFET
I
RSENSE
FAULT
CYCLE
FAULT
CYCLE
0
Figure 33. ADM4210-2 Latch Off After Overcurrent Fault
Figure 32. ADM4210-1 Automatic Retry During Overcurrent Fault
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM4210-1AUJ | 制造商:Analog Devices 功能描述:LOW VOLTAGE HOT SWAP CONTROLLER - Bulk |
| ADM4210-1AUJ-RL7 | 制造商:Analog Devices 功能描述: |
| ADM4210-1AUJZ-RL7 | 功能描述:IC CTRLR HOTSWAP RETRY TSOT-23-6 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 |
| ADM4210-2AUJ | 制造商:Analog Devices 功能描述:LOW VOLTAGE HOT SWAP CONTROLLER - Bulk |
| ADM4210-2AUJZ-RL7 | 功能描述:IC CTLR HOTSWAP LV TSOT23-6 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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