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参数资料
| 型号： | MAX5920AESA+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 12/18页 |
| 文件大小： | 310K |
| 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： | 100 |
| 类型： | 热交换控制器 |
| 应用： | 通用 |
| 内部开关： | 无 |
| 电源电压： | -20 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： | 管件 |
Figure 11 shows how to program the undervoltage and
overvoltage trip thresholds using three resistors. With R4
= 549k&, R5 = 6.49k&, and R6 = 10k&, the undervoltage
threshold is set to 38.5V (with a 43V release from under-
voltage), and the overvoltage is set to 71V. The resistor-
divider also increases the hysteresis and overvoltage
lockout to 4.5V and 2.8V at the input supply, respectively.
PWRGD/PWRGD Output
The PWRGD (PWRGD) output can be used directly to
enable a power module after hot insertion. The
MAX5920A (PWRGD) can be used to enable modules
with an active-low enable input (Figure 13), while the
MAX5920B (PWRGD) is used to enable modules with
an active-high enable input (Figure 12).
The PWRGD signal is referenced to the DRAIN termi-
nal, which is the negative supply of the power module.
The PWRGD signal is referenced to V
EE
.
When the DRAIN voltage of the MAX5920A is high with
respect to V
EE
or the GATE voltage is low, the internal
pulldown MOSFET Q2 is off and the PWRGD pin is in a
high-impedance state (Figure 13). The PWRGD pin is
-48V Hot-Swap Controller
with External R
SENSE
12 ______________________________________________________________________________________
GATE
2V/div
NODE1
50V/div
1s/div
V
EE
SENSE
GATE
DRAIN
V
DD
OV
UV
PWRGD
MAX5920A
-48V RTN
-48V RTN
(SHORT PIN)
*
-48V
*DIODES INC. SMAT70A.
R4
549k&
1%
R8
510k&
5%
R5
6.49k&
1%
R6
549k&
1%
R7
1M&
5%
R6
10k&
1%
R1
0.02&
5%
R3
1k&
5%
R2
10&
5%
C1
470nF
25V
C4
1礔
100V
N
Q1
IRF530
D1
1N4148
Q2
2N2222
Q3
ZVN3310
C2
3.3nF
100V
C3
100礔
100V
P
NODE1
Figure 10. Automatic Restart After Current Fault
V
EE
V
DD
OV
UV
MAX5920A
MAX5920B
-48V RTN
-48V
V
UV
= 1.255
R4 + R5 + R6
R5 + R6
R4
R5
R6
-48V RTN
(SHORT PIN)
3
2
4
8
V
OV
= 1.255
R4 + R5 + R6
R6
Figure 11. Undervoltage and Overvoltage Sensing
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5920AESA+ | 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 |
| MAX5920AESA+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 |
| MAX5920AESA-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 |
| MAX5920BESA | 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 |
| MAX5920BESA+ | 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 |
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