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參數(shù)資料
| 型號(hào)： | PIP401 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | OR-ing Intelligent Switch |
| 中文描述： | 400 A BUF OR INV BASED PRPHL DRVR, PSSO6 |
| 封裝： | PLASTIC, SOT-427, D2PAK-7 |
| 文件頁(yè)數(shù)： | 4/16頁(yè) |
| 文件大?。?/td> | 272K |
| 代理商： | PIP401 |
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Philips Semiconductors
PIP401
OR-ing Intelligent Switch
Product data
Rev. 03 — 5 November 2002
4 of 16
9397 750 10578
Koninklijke Philips Electronics N.V. 2002. All rights reserved.
7.3 Driver and series power switch
7.3.1
Soft turn-on
At switch on, the PIP401 turns on slowly to avoid current surges. These can cause
oscillations in the output voltage and may cause the protected power supply to shut
down. Typical turn-on time is 7
μ
s.
7.3.2
Low voltage drop
The on-state characteristic of the PIP401 is shown in
Figure 5
. In the on-state, the
PIP401 has very low voltage drop, typically 70 mV at 40 A, 25
°
C. This produces a
power dissipation of 2.8 W. In comparison, a Schottky diode with a forward voltage
drop of 320 mV would have a power dissipation of 12.8 W.
7.3.3
Low current operation
At low current levels, the voltage drop is only a few millivolts. This makes it difficult for
the comparator to determine when to switch off. The PIP401 overcomes this problem
by backing off the gate drive to the series power switch at current levels below 2 A.
The effect is to increase the resistance between VI and VO so that the voltage drop is
maintained at a constant level of approximately 6 mV. This is above the minimum
detectable threshold voltage of the comparator. This is shown in
Figure 5
by the
flattening of the curves at low current.
7.3.4
Fast turn-off with no reverse current
When the input voltage (V
I
) falls below the remote sense input voltage (V
RS
), the
PIP401 switches off very quickly, blocking the flow of reverse current.
Figure 3
shows
switching waveforms from an initial forward current of 20 A. Note the smooth ramp
down of current from 20 A with no reverse current flow and minimum disruption of the
output voltage. Total turn-off time is less than 400 ns.
The gate drive circuit in the PIP401 is referenced to VI. When the input voltage is less
than the remote sense voltage, current flows into V
CC
and out of VI. The maximum
current is 35 mA. In order to prevent charging of the output capacitors of the
protected supply connected to VI, a 100 W resistor should be connected between VI
and GND. This is shown as R1 in
Figure 2
.
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參數(shù)描述 |
|---|---|
| PIP401,118 | 功能描述:電源開關(guān) IC - 配電 OR-ING INTELIGENT SW RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時(shí)間（最大值）:400 us 關(guān)閉時(shí)間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| PIP401 | 制造商:NXP Semiconductors 功能描述:IC MOSFET N SOT-427 |
| PIP401/T3 | 功能描述:電源開關(guān) IC - 配電 OR-ING INTELIGENT SW RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時(shí)間（最大值）:400 us 關(guān)閉時(shí)間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| PIP440 | 制造商:ProTek Devices 功能描述:Diode TVS Single Bi-Dir 623V 15KW 2-Pin 制造商:Microsemi Corporation 功能描述:TVS SGL BI-DIR 623V 15KW 2PIN CASE 11 - Bulk |
| PIP46U | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Fibers can be free cut using fiber cutter |
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