參數(shù)資料
型號(hào)： MAX5949
廠商： Maxim Integrated Products, Inc.
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： -48V Hot-Swap Controllers with External RSENSE
中文描述： -48V熱插拔控制器，外置RSENSE
文件頁數(shù)： 12/18頁
文件大小： 269K
代理商： MAX5949
M
The UV pin is also used to reset the circuit breaker after
a fault condition has occurred. The UV pin can be pulled
below V
UVL
to reset the circuit breaker.
Figure 12 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 of the overvoltage
and overvoltage lockout, to 4.5V and 1.1V 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
MAX5949A (
PWRGD
) can be used to enable modules
with an active-low enable input (Figure 14), while the
MAX5949B (PWRGD) is used to enable modules with
an active-high enable input (Figure 13).
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
.
-48V Hot-Swap Controllers
with External R
SENSE
12
______________________________________________________________________________________
GATE
2V/div
NODE2
50V/div
1s/div
V
EE
SENSE
GATE
DRAIN
V
DD
OV
UV
PWRGD
MAX5949A
-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%
R9
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
15nF
100V
C3
100
μ
F
100V
NODE2
Figure 11. Automatic Restart After Current Fault
V
EE
V
DD
OV
UV
MAX5949A
MAX5949B
-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 12. Undervoltage and Overvoltage Sensing
相關(guān)PDF資料
PDF描述
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
MAX6029 Ultra-Low-Power Precision Series Voltage Reference
MAX6029EUK33-T Ultra-Low-Power Precision Series Voltage Reference
MAX6029EUK41-T Ultra-Low-Power Precision Series Voltage Reference
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX5949AESA 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
MAX5949AESA+ 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
MAX5949AESA+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
MAX5949AESA+TG126 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX5949AESA-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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*