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參數(shù)資料
| 型號： | PIP250M |
| 英文描述： | Integrated buck converter |
| 中文描述： | 集成的降壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 7/19頁 |
| 文件大小： | 334K |
| 代理商： | PIP250M |
Philips Semiconductors
PIP250M
Integrated buck converter
Product data
Rev. 02 — 21 February 2003
7 of 19
9397 750 10904
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
7.2.6
Undervoltage and overvoltage protection
With reference to
Figure 1
, the FB pin is connected internally to the overvoltage and
undervoltage comparators, labelled OVP and UVP respectively. In normal operation,
the voltage on FB is regulated at 0.8 V.
If the voltage on FB exceeds the overvoltage protection (OVP) threshold (1 V) for
longer than 30
μ
s, an overvoltage condition is detected, the gate drive signals to the
MOSFETs are disabled, and the PIP250M latches off. To reset the latch, the
PIP250M must be powered down by reducing V
DDC
below the power down reset
threshold and then increasing V
DDC
back up to 5 V.
If the voltage on FB drops below the undervoltage protection (UVP) threshold (0.5 V)
for longer than 30
μ
s, then an undervoltage condition is detected and the gate drive
signals to the MOSFET drivers are turned off. If three undervoltage pulses are
detected then the PIP250M latches off. To reset the PIP250M, the supply voltage
(V
DDC
) must be reduced below the power down reset threshold and then increased
back up to 5 V.
Fig 5.
Overcurrent trip level as a function of R
OCSET
.
03ak48
0
10
20
30
1
2
3
4
ROCSET (k
)
ITRIP
(A)
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PDF描述 |
|---|---|
| PIP3103-T | TRANSISTOR | MOSFET | N-CHANNEL | SOT-223 |
| PIP3106-D | TRANSISTOR | MOSFET | N-CHANNEL | 50V V(BR)DSS | TO-252AA |
| PIP3107-D | TRANSISTOR | MOSFET | N-CHANNEL | 50V V(BR)DSS | TO-252AA |
| PIP3104 | PowerMOS transistor Logic level TOPFET |
| PIP3104-P | PowerMOS transistor Logic level TOPFET |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PIP250M,518 | 功能描述:IC REG BUCK SYNC ADJ 15A 68HVQFN RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:20 系列:SIMPLE SWITCHER® 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關(guān):52kHz 電流 - 輸出:1A 同步整流器:無 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 包裝:管件 供應(yīng)商設(shè)備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12 |
| PIP26U | 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 |
| PIP30 | 制造商:Microsemi Corporation 功能描述:TVS SGL BI-DIR 42.5V 7.5KW 2PIN CASE 11 - Bulk 制造商:ProTek Devices 功能描述:Suppressor Assembly 30V 7.5KW |
| PIP3101-A,127 | 功能描述:MOSFET RAIL TOPFET2 RoHS:否 制造商:STMicroelectronics 晶體管極性:N-Channel 汲極/源極擊穿電壓:650 V 閘/源擊穿電壓:25 V 漏極連續(xù)電流:130 A 電阻汲極/源極 RDS（導(dǎo)通）:0.014 Ohms 配置:Single 最大工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:Max247 封裝:Tube |
| PIP3102-R | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:LOGIC LEVEL TOPFET |
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