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參數資料
| 型號： | MAX5934EEE+ |
| 廠商： | Maxim Integrated |
| 文件頁數： | 13/15頁 |
| 文件大小： | 268K |
| 描述： | IC HOT-SWAP CONTROLLER 16-QSOP |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 100 |
| 類型： | 熱交換控制器 |
| 應用： | 通用 |
| 內部開關： | 無 |
| 電源電壓： | 33 V ~ 80 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 16-QSOP |
| 包裝： | 管件 |
Positive High-Voltage, Hot-Swap Controllers with
Selectable Fault Management and Status Polarity
______________________________________________________________________________________ 13
changes in currents flowing through the power-supply
traces. This can cause inductive voltage spikes that
could exceed 85V. Use wider traces or heavier trace
plating and connect a 0.1礔 capacitor between V
CC
and
GND to minimize these inductive spikes. Use a transient
voltage suppressor (TVS) at the input to prevent damage
from voltage surges. An SMBJ54A is recommended.
Power-Up Sequence
At power-up, transistor Q1 (see the Typical Application
Circuit) is off until these three conditions are met:
" V
ON
exceeds the turn-on threshold voltage
" V
CC
exceeds the UVLO threshold
" V
TIMER
stays below 1.233V
The voltage at GATE increases with a slope of 10礎/C1
(where C1 is shown in the Typical Application Circuit)
and I
INRUSH
= C
L
x 10礎 / C1. When the voltage across
R
SENSE
goes too high, the inrush current is limited by
the internal current-limit circuitry that adjusts the GATE
voltage to keep a constant voltage across R
SENSE
.
Thermal Shutdown
If the MAX5934/MAX5934A die temperature reaches
+150癈, an overtemperature fault is generated. As a
result, GATE goes low and turns the external MOSFET
off. The MAX5934/MAX5934A die temperature must
cool down below +120癈 before the overtemperature
fault condition is removed.
Board Layout and Bypassing
Kelvin connections are recommended for accurate cur-
rent sensing. Make sure the minimum trace width for
2oz copper is 1.5mm per amp. A width of 4mm per amp
is recommended.
Connect a resistive divider from V
CC
to ON as close as
possible to ON and have short traces from V
CC
and
GND. To decrease induced noise connect a 0.1礔
capacitor between ON and GND (see Figure 10).
The external MOSFET must be thermally coupled to the
MAX5934/MAX5934A to ensure proper thermal shut-
down operation.
OVERVOLTAGE WAVEFORMS
I
SENSE
5A/div
TIMER
10V/div
IN
50V/div
GATE
50V/div
10祍/div
OUTPUT
50V/div
Figure 9. Overvoltage Waveforms
IRF530
Figure 10. Recommended Layout for R2, R3, and R
SENSE
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| MAX5934EEE+ | 功能描述:熱插拔功率分布 Positive Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5934EEE+T | 功能描述:熱插拔功率分布 Positive Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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| MAX5935CAX+ | 功能描述:熱插拔功率分布 Quad Network Power Controller RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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