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參數資料
| 型號： | SC2449EVB |
| 廠商： | Semtech Corporation |
| 英文描述： | BI-Phase/Dual Controller |
| 中文描述： | BI-Phase/Dual控制器 |
| 文件頁數： | 1/21頁 |
| 文件大小： | 1583K |
| 代理商： | SC2449EVB |
POWER MANAGEMENT
Description
1
www.semtech.com
SC2449
BI-Phase/Dual Controller
Features
Applications
Power supplies for advanced telecoms/datacoms
SO IP, Ethernet and PABX power supplies
Revision: January 17, 2007
Typical Application Circuit
Selectable dual output or bi-phase operation
Direct drive for N-channel MOSFETs
Undervoltage lockout
Synchronization to external clock
Multi-converter synchronization
Soft start
Fast transient response
Max duty cycle 45%
Output over voltage protection
Thermal shutdown
28-Pin SO lead free package available. Fully WEEE
and RoHS compliant
The SC2449 can be configured as a dual converter or a
bi-phase converter for high current applications. The part
is designed for point of use power supplies with 8.5-28V
nominal backplane power sources. Multiple supplies can
be synchronized together to prevent low frequency har-
monics on the backplane. The power dissipation is con-
trolled using a novel low voltage supply technique, allow-
ing high speed and integration, with the high drive cur-
rents to ensure low MOSFET switching loss.
The use of high speed switching circuits allows very nar-
row PWM outputs down to 15:1 voltage ratios. Single
pin compensation for each channel simplifies develop-
ment as well as reducing external pin count.
Capable of driving MOSFETs via external driver transis-
tors for phase currents beyond 20A.
相關PDF資料 |
PDF描述 |
|---|---|
| SC2449ISWTR | BI-Phase/Dual Controller |
| SC2449ISWTRT | BI-Phase/Dual Controller |
| SC2449 | BI PHASE DUAL CONTROLLER |
| SC2450_07 | BI-Phase/Dual Controller |
| SC2450ISWTRT | BI-Phase/Dual Controller |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SC2449ISWTR | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:BI-Phase/Dual Controller |
| SC2449ISWTRT | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:BI-Phase/Dual Controller |
| SC24-4R7-R | 功能描述:INDUCTOR SHIELD 4.7UH 600MA SMD RoHS:是 類別:電感器，線圈，扼流圈 >> 固定式 系列:SC24 標準包裝:500 系列:1331 電感:1.2µH 電流:247mA 電流 - 飽和:247mA 電流 - 溫升:- 類型:鐵芯體 容差:±10% 屏蔽:屏蔽 DC 電阻(DCR):最大 730 毫歐 Q因子@頻率:40 @ 7.9MHz 頻率 - 自諧振:130MHz 材料 - 芯體:鐵 封裝/外殼:0.312" L x 0.115" W x 0.135" H（7.94mm x 2.92mm x 3.43mm） 安裝類型:表面貼裝 包裝:帶卷 (TR) 工作溫度:-55°C ~ 105°C 頻率 - 測試:7.9MHz |
| SC2450 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:BI-Phase/Dual Controller |
| SC2450_07 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:BI-Phase/Dual Controller |
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