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參數資料
| 型號： | LM5115MMX |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Secondary Side Post Regulator Controller |
| 中文描述： | 次級端后穩(wěn)壓控制器 |
| 文件頁數： | 1/17頁 |
| 文件大?。?/td> | 725K |
| 代理商： | LM5115MMX |
LM5115
Secondary Side Post Regulator Controller
General Description
The LM5115 controller contains all of the features necessary
to implement multiple output power converters utilizing the
Secondary Side Post Regulation (SSPR) technique. The
SSPR technique develops a highly efficient and well regu-
lated auxiliary output from the secondary side switching
waveform of an isolated power converter. Regulation of the
auxiliary output voltage is achieved by leading edge pulse
width modulation (PWM) of the main channel duty cycle.
Leading edge modulation is compatible with either current
mode or voltage mode control of the main output. The
LM5115 drives external high side and low side NMOS power
switches configured as a synchronous buck regulator. A
current sense amplifier provides overload protection and
operates over a wide common mode input range. Additional
features include a low dropout (LDO) bias regulator, error
amplifier, precision reference, adaptive dead time control of
the gate signals and thermal shutdown.
Features
n
Self-synchronization to main channel output
n
Free-run mode for buck regulation of DC input
n
Leading edge pulse width modulation
n
Voltage-mode control with current injection and input line
feed-forward
n
Operates from AC or DC input up to 75V
n
Wide 4.5V to 30V bias supply range
n
Wide 0.75V to 12V output range.
n
Top and bottom gate drivers sink 2.5A peak
n
Adaptive gate driver dead-time control
n
Wide bandwidth error amplifier (4MHz)
n
Programmable soft-start
n
Thermal shutdown protection
n
TSSOP-16 or thermally enhanced LLP-16 packages
Typical Application Circuit
20134901
FIGURE 1. Simplified Multiple Output Power Converter Utilizing SSPR Technique
PRELIMINARY
March 2005
L
2005 National Semiconductor Corporation
DS201349
www.national.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM5115MTC | 功能描述:開關變換器、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 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| LM5115MTC/MEY8 | 制造商:Texas Instruments 功能描述: |
| LM5115MTC/NOPB | 功能描述:DC/DC 開關控制器 Secondary Side Switching Reg RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| LM5115MTCX | 功能描述:開關變換器、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 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| LM5115MTCX/NOPB | 功能描述:開關變換器、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 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
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