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參數(shù)資料
| 型號(hào)： | MAX5948AESA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | -48V Hot-Swap Controllers with External RSENSE |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | 0.150 INCH, MS-012AA, SOIC-8 |
| 文件頁數(shù)： | 9/18頁 |
| 文件大?。?/td> | 685K |
| 代理商： | MAX5948AESA |
M
-48V Hot-Swap Controllers
with External R
SENSE
_______________________________________________________________________________________
9
the V
EE
terminal so long as the absolute maximum
allowed DRAIN terminal current (-100mA) is not
exceeded. As I
DD
is only 2mA maximum, this limiting
current will not even be approached.
Electronic Circuit Breaker
The MAX5948 provides a circuit-breaker feature that
protects against excessive load current and short-cir-
cuit conditions. The load current is monitored by sens-
ing the voltage across an external sense resistor
connected between V
EE
and SENSE.
If the voltage between V
EE
and SENSE exceeds the
current-limit trip voltage (V
CB
) for a period of
t
PHLSENSE
, the electronic circuit breaker will trip, caus-
ing the MAX5948A/MAX5948B to turn off the external
MOSFET as shown in Figure 8.
After an overcurrent fault condition, the circuit breaker
can be reset by pulling the UV pin low and then pulling
UV high or by cycling power to the MAX5948A/
MAX5948B.
If more than 3μs (typ) deglitch time (t
PHLSENSE
) is
needed to prevent spurious shutdown due to load cur-
rent spikes or noise, a simple lowpass filter can be
used between the SENSE and V
EE
pins as shown in
V
EE
SENSE
GATE
DRAIN
V
DD
OV
UV
PWRGD
MAX5948B
-48V RTN
-48V
R4
562k
1%
R5
9.09k
1%
R6
10k
1%
R1
0.02
5%
R3
18k
5%
R2
10
5%
C1
150nF
25V
Q1
IRF530
C2
3.3nF
100V
GATE IN
VICOR
VI-J3D-CY
V
IN+
V
IN-
C4
100
μ
F
100V
C3
0.1
μ
F
100V
*
-48V RTN
(SHORT PIN)
*DIODES INC. SMAT70A.
Figure 7a. Inrush Control Circuitry
GATE - V
EE
10V/div
V
EE
50V/div
DRAIN
50V/div
INRUSH
CURRENT
1A/div
4ms/div
CONTACT
BOUNCE
Figure 7b. Input Inrush Current
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX5948B | 4-2-3-2 Input AND-OR-invert Gates 14-CDIP -55 to 125 |
| MAX5948BESA | -48V Hot-Swap Controllers with External RSENSE |
| MAX5949 | -48V Hot-Swap Controllers with External RSENSE |
| MAX5949AESA | -48V Hot-Swap Controllers with External RSENSE |
| MAX5949BESA | Dual D-type Positive-Edge-Triggered Flip-Flops With Preset And C 14-CDIP -55 to 125 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5948AESA+ | 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 |
| MAX5948AESA+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 |
| MAX5948AESA-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 |
| MAX5948BESA | 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 |
| MAX5948BESA+ | 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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