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參數(shù)資料
| 型號(hào)： | MAX5937LCESA+ |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 9/23頁 |
| 文件大小： | 382K |
| 描述： | IC HOT-SWAP CTRLR -48V 8-SOIC |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 100 |
| 類型： | 熱交換控制器 |
| 應(yīng)用： | 通用 |
| 內(nèi)部開關(guān)： | 無 |
| 電源電壓： | -10 V ~ -80 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOIC |
| 包裝： | 管件 |
-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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5937LCESA+ | 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 |
| MAX5937LCESA+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 |
| MAX5937LCESA-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 |
| MAX5937LNESA | 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 |
| MAX5937LNESA+ | 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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