- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄374019 > ADP3025 (Analog Devices, Inc.) High Efficiency Dual Output Power Supply Controller PDF資料下載
參數(shù)資料
| 型號(hào)： | ADP3025 |
| 廠(chǎng)商： | Analog Devices, Inc. |
| 英文描述： | High Efficiency Dual Output Power Supply Controller |
| 中文描述： | 高效率雙輸出電源控制器 |
| 文件頁(yè)數(shù)： | 15/24頁(yè) |
| 文件大?。?/td> | 609K |
| 代理商： | ADP3025 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)當(dāng)前第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)
ADP3025
This current limit circuit is designed to protect against high
current or short-circuit conditions only. This protects the IC
and MOSFETs long enough to allow the output undervoltage
protection circuitry to latch off the supply.
Rev. A | Page 15 of 24
NOMINAL INDUCTOR VALUE
Inductor design is based on the assumption that the inductor
ripple current is 30% of the maximum output dc current at a
nominal 12 V input voltage. The inductor ripple current and
inductance values are not critical, but are important in analyz-
ing the trade-offs between cost, size, efficiency, and volume. The
higher the ripple current, the lower the inductor size and
volume. However, this leads to higher ac losses in the windings.
Conversely, a higher inductor value means lower ripple current
and smaller output filter capacitors, as well as slower transient
response.
The inductor design should be based on the maximum output
current plus 15% ( of the 30% ripple allowance) at the
nominal input voltage:
(
)
)
(
)
(
)
(
3
NOM
IN
MAX
OUT
I
OUT
OUT
NOM
IN
V
f
V
V
V
L
×
×
×
×
≥
(7)
Optimum standard inductor values for various output voltage
and current levels are shown in Table 6.
Table 6. Standard Inductor Values
Frequency (kHz)
200
300
INDUCTOR SELECTION
Once the value for the inductor is known, there are two ways to
proceed: design the inductor in-house or buy the closest induc-
tor that meets the overall design goals.
Standard Inductors
Buying a standard inductor provides the fastest, easiest solution.
Many companies offer suitable power inductor solutions. A list
of power inductor manufacturers is given in Table 7.
3.3 V/2 A 3.3 V/4 A
20 μH
12 μH
5 V/2 A
22 μH
15 μH
5 V/4 A
10 μH
8.2 μH
8.2 μH
6.8 μH
Table 7. Recommended Inductor Manufacturers
Coilcraft
Phone: 847/639-6400
Fax: 847/639-1469
Web: www.coilcraft.com
SMT Power Inductors,
Series 1608, 3308, 3316, 5022, 5022HC, DO3340,
Low Cost Solution
SMT Shielded Power Inductors
Series DS5022, DS3316, DT3316,
Best for Low EMI/RFI
Power Inductors and Chokes,
Series DC1012, PCV-0, PCV-1, PCV-2, PCH-27, PCH-45,
Low Cost
Coiltronics
Phone: 561/241-7876
Fax: 561/241-9339
Web: www.coiltronics.com
SMT Power Inductors,
Series UNI-PAC2, UNI-PAC3 and UNI-PAC4,
Low Cost Solution
SMT Power Inductors,
Series, ECONO-PAC, VERSA-PAC,
Best for Low Profile or Flexible Design
Power Inductors CTX Series,
Low EMI/RFI, Low Cost Toroidal Inductors but not
Miniature
Murata Electronics
North America, Inc.
Phone: 770/436-1300
Fax: 770/436-3030
Web: www.murata.com
SMT Power Inductors,
Series LQT2535.
Best for Low EMI/RFI
Chip Inductors
LQN6C, LQS66C
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADP3050AR-33 | Circular Connector Cable Assembly; Connector Type A:Circular Plug; Connector Type B:Stripped End Leads; Cable Length:10ft RoHS Compliant: Yes |
| ADP3050AR-5 | Circular Connector Cable Assembly; Connector Type A:Circular Receptacle; Connector Type B:Stripped End Leads; Cable Length:10ft RoHS Compliant: Yes |
| ADP3050 | 200 kHz, 1 A High-Voltage Step-Down Switching Regulator |
| ADP3050AR | 200 kHz, 1 A High-Voltage Step-Down Switching Regulator |
| ADP3155 | 5-Bit Programmable Triple Power Supply Controller for Pentium III Processors |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADP3025JRU | 制造商:Analog Devices 功能描述:DC DC CNTRLR DUAL-OUT SYNC BUCK 5.5V TO 25V 38TSSOP - Bulk |
| ADP3025JRU-REEL | 制造商:Analog Devices 功能描述:DC DC Cntrlr Dual-OUT Sync Buck 5.5V to 25V Input 38-Pin TSSOP T/R 制造商:Rochester Electronics LLC 功能描述:TRIPLE OUTPUT SYNCHRONOUS BUCK CNTLR - Tape and Reel |
| ADP3025JRUZ-REEL | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| ADP3026 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:High-Efficiency Notebook Computer Power Supply Controller |
| ADP3026ARU | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:High-Efficiency Notebook Computer Power Supply Controller |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。