參數(shù)資料
型號(hào)： MAX5920AESA
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： 電源管理
英文描述： Quadruple 2-Line To 1-Line Data Selectors/Multiplexers 16-CDIP -55 to 125
中文描述： 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝： 0.150 INCH, MS-012AA, SO-8
文件頁(yè)數(shù)： 12/18頁(yè)
文件大?。?/td> 310K
代理商： MAX5920AESA
M
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
μ
F
100V
N
Q1
IRF530
D1
1N4148
Q2
2N2222
Q3
ZVN3310
C2
3.3nF
100V
C3
100
μ
F
100V
P
NODE1
Figure 10. Automatic Restart After Current Fault
V
EE
V
DD
OV
UV
MAX5920A
MAX5920B
-48V RTN
-48V
UV
= 1.255 R4 + R5 + R6
V
R4
R5
R6
-48V RTN
(SHORT PIN)
3
2
4
8
OV
= 1.255 R4 + R5 + R6
V
Figure 11. Undervoltage and Overvoltage Sensing
相關(guān)PDF資料
PDF描述
MAX5920BESA Quadruple 2-Line To 1-Line Data Selectors/Multiplexers 16-CFP -55 to 125
MAX5945 Quad Network Power Controller for Power-Over-LAN
MAX5945CAX Quad Network Power Controller for Power-Over-LAN
MAX5945EAX Quad Network Power Controller for Power-Over-LAN
MAX5948 AND-OR-invert Gates 14-CFP -55 to 125
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX5920AESA+ 功能描述:熱插拔功率分布 48V- Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5920AESA+T 功能描述:熱插拔功率分布 48V- Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5920AESA-T 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5920BESA 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5920BESA+ 功能描述:熱插拔功率分布 48V- Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
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