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| 型號(hào)： | IP2001 |
| 英文描述： | IP2001 |
| 中文描述： | IP2001 |
| 文件頁(yè)數(shù)： | 4/10頁(yè) |
| 文件大?。?/td> | 806K |
| 代理商： | IP2001 |
www.irf.com
4
iP2001
Fig 2.
Safe Operating Area (SOA) vs. T
PCB
*
(
*
see AN-1030 for details)
Fig 1.
Power Loss vs. Current
Adjusting the Power Loss and SOA curves for different operating conditions
To make adjustments to the power loss curves in Fig. 1, multiply the normalized value obtained from the curves in Figs. 3,
4, 5 or 6 by the value indicated on the power loss curve in Fig. 1. If multiple adjustments are required, multiply all of the
normalized values together, then multiply that product by the value indicated on the power loss curve in Fig. 1. The resulting
product is the final power loss based on all factors.
To make adjustments to the SOA curve in Fig. 2, determine the maximum allowed PCB temperature in Fig. 2 at the required
operating current. Then, add the correction temperature from the normalized curves in Figs. 3, 4, 5 or 6 to find the final
maximum allowable PCB temperature. When multiple adjustments are required, add all of the temperatures together, then
add the sum to the PCB temperature indicated on the SOA graph to determine the final maximum allowable PCB temperature
based on all factors.
Operating Conditions for the examples below:
Output Current = 20A
Output Voltage = 2.5V
Input Voltage = 7V
Sw Freq= 750kHz
Adjusting for Maximum Power Loss:
(Fig. 1)
(Fig. 3)
(Fig. 4)
(Fig. 5)
Maximum power loss
=
5W
Normalized power loss for input voltage
≈
0.925
Normalized power loss for output voltage
≈
1.1
Normalized power loss for frequency
≈
1.225
Adjusted Power Loss = 5W x 1.1 x 0.925 x 1.225
≈
6.23W
Adjusting for SOA Temperature:
(Fig. 2)
(Fig. 3)
(Fig. 4)
(Fig. 5)
SOA PCB Temperature = 90°C
Normalized SOA PCB Temperature for input voltage
≈
2.6°C
Normalized SOA PCB Temperature for output voltage
≈
-3.5°C
Normalized SOA PCB Temperature for frequency
≈
-7.5°C
Adjusted SOA PCB Temperature = 90°C - 3.5°C + 2.6°C - 7.5°
≈
81.6°C
0
2
4
6
8
10
12
14
16
18
20
22
0
10
20
30
40
50
60
70
80
90
100
110
120
130
PCB Temperature (oC)
O
Safe Operating
Area
V
IN
= 12V
V
OUT
= 1.6V
f
SW
= 500kHz
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Output Current (A)
P
V
IN
= 12V
V
OUT
= 1.6V
T
BLK
= 125°C
f
SW
= 500kHz
Maximum
Typical
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| IP2001TR | 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| IP2001TRPBF | 功能描述:IC REG BUCK SYNC ADJ 20A 144BGA RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:iPOWIR™ 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(kāi)關(guān):52kHz 電流 - 輸出:1A 同步整流器:無(wú) 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 |
| IP2002 | 功能描述:IC REG BUCK SYNC ADJ 30A 144BGA RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:iPOWIR™ 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(kāi)關(guān):52kHz 電流 - 輸出:1A 同步整流器:無(wú) 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 |
| IP2002PBF | 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 SYNC BUCK MULTIPHASE BGA PWR BLOCK RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
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