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參數(shù)資料
| 型號： | SI9165 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | High Frequency 600-mA Synchronous Buck/Boost Converter |
| 中文描述： | 高頻600毫安同步降壓/升壓轉換器 |
| 文件頁數(shù)： | 8/8頁 |
| 文件大?。?/td> | 74K |
| 代理商： | SI9165 |
Si9165
Vishay Siliconix
www.vishay.com
8
Document Number: 70845
S-40693—Rev. C, 19-Apr-04
Synchronization
The synchronization to external clock is easily accomplished
by connecting the external clock into the SYNC pin. A logic
high to low transition synchronizes the clock. The external
clock frequency must be within 1.2 to 1.5 times the internal
clock frequency.
Break-Before-Make Timing
A proper BBM time is essential in order to prevent
shoot-through current and maintain high efficiency. The
break-before-make time is set internally at 20 ns @ V
S
= 3.6 V.
The high and low-side MOSFET drain voltages are monitored
and when the drain voltage reaches the 1.75 V below or above
its initial starting voltage, 20 ns BBM time is set before the other
switch turns on. The maximum controllable duty cycle is
limited by the BBM time. Since the BBM time is fixed,
maximum controllable duty cycle will vary depending on the
switching frequency.
Output MOSFET Stage
The high- and low-side switches are integrated to provide
optimum performance and to minimize the overall converter
size. Both, high and low-side switches are designed to handle
up to 600 mA of continuous current. The MOSFET switches
were designed to minimize the gate charge loss as well as the
conduction loss. For the high frequency operation, switching
losses can exceed conduction loss, if the switches are
designed incorrectly. Under full load, efficiency of 90% is
accomplished with 3.6-V battery voltage in both buck and
boost modes (+2.7-V output voltage for buck mode and +5-V
output voltage for boost mode).
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SI9165_07 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:High Frequency 600-mA Synchronous Buck/Boost Converter |
| SI9165BQ-T1 | 功能描述:直流/直流開關調節(jié)器 2MHz Controller RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| SI9165BQ-T1-E3 | 功能描述:直流/直流開關轉換器 Sync Buck/Boost Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| SI9165DB | 功能描述:電源管理IC開發(fā)工具 SI9165 Demo Board RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| SI9165DB-K | 制造商:Vishay Siliconix 功能描述:SI9165 DEMOB BOARD - Bulk 制造商:Vishay Siliconix 功能描述:IC, SYNCHRONOUS BUCK/BOOST CONV 20-TSSOP; Primary Input Voltage:6V; No. of Outputs:1; Output Voltage:1.3V; Output Current:600mA; No. of Pins:20; Operating Temperature Min:-25C; Operating Temperature Max:85C; Supply Voltage Max:6V ;RoHS Compliant: No |
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