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参数资料
| 型号： | MAX5936ANESA+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 9/23页 |
| 文件大小： | 382K |
| 描述： | IC HOT-SWAP CTRLR -48V 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 热交换控制器 |
| 应用： | 通用 |
| 内部开关： | 无 |
| 电源电压： | -10 V ~ -80 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
-48V Hot-Swap Controllers with V
IN
Step Immunity and No R
SENSE
_______________________________________________________________________________________ 9
In a normal power-up GATE cycle, the voltage at V
OUT
(referenced to V
EE
) ramps to below 72% of the circuit-
breaker threshold voltage, V
CB
. At this time, the remaining
GATE voltage is rapidly pulled up to full enhancement.
PGOOD is asserted 1.26ms after GATE is fully enhanced
(see Figure 4). If the voltage at V
OUT
remains above 72%
of the V
CB
(when GATE reaches 90% of full enhance-
ment), then a power-up to fault management fault has
occurred (see Figure 5). GATE is rapidly pulled to V
EE
,
turning off the power MOSFET and disconnecting the
load. PGOOD remains deasserted and the MAX5936/
MAX5937 enter the fault management mode.
When the power MOSFET is fully enhanced, the
MAX5936/MAX5937 monitor the drain voltage (V
OUT
) for
circuit-breaker and short-circuit faults. The MAX5936/
MAX5937 make use of the power MOSFETs R
DS(ON)
as
the current-sense resistance to detect excessive current
through the load. The short-circuit threshold voltage,
V
SC
, is twice V
CB
(V
SC
= 2 x V
CB
) and is available in
100mV, 200mV, and 400mV thresholds. V
CB
and V
SC
are temperature-compensated (increasing with tempera-
ture) to track the normalized temperature coefficient of
R
DS(ON)
for typical power MOSFETs.
When the load current is increased during full enhance-
ment, this causes V
OUT
to exceed V
CB
but remains less
than V
SC
, and starts the 1.2ms circuit-breaker glitch
rejection timer. At the end of the glitch rejection period,
if V
OUT
still exceeds V
CB
, the GATE is immediately
pulled to V
EE
(330ns), PGOOD (PGOOD) is deasserted,
and the part enters fault management. Alternatively,
during full enhancement when V
OUT
exceeds V
SC
,
there is no glitch rejection timer. GATE is immediately
pulled to V
EE
, PGOOD is deasserted, and the part
enters fault management.
Figure 3. Load Probe Test During Initial Power-Up
40ms/div
V
EE
20V/div
V
LP
20V/div
V
OUT
20V/div
ALL VOLTAGES
REFERENCED TO GND
Figure 2. GATE Voltage Clamp During Power-Up
V
IN
20V/div
V
GATE
1V/div
4ms/div
C
IN
= 100礔
Figure 4. MAX5936 Normal Condition
V
IN
50V/div
V
PGOOD
50V/div
40ms/div
V
GATE
10V/div
V
OUT
50V/div
I
IN
2A/div
Figure 5. MAX5936 Startup in Fault Condition
V
IN
50V/div
V
PGOOD
50V/div
40ms/div
V
GATE
10V/div
V
OUT
50V/div
I
IN
2A/div
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5936LAESA | 功能描述:热插拔功率分布 RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX5936LAESA+ | 功能描述:热插拔功率分布 48V- Hot-Swap Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX5936LAESA+T | 功能描述:热插拔功率分布 48V- Hot-Swap Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX5936LAESA-T | 功能描述:热插拔功率分布 RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX5936LBESA | 功能描述:热插拔功率分布 RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
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