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參數資料
| 型號： | LM5026SDX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | Active Clamp Current Mode PWM Controller |
| 中文描述： | 3 A SWITCHING CONTROLLER, 660 kHz SWITCHING FREQ-MAX, DSO16 |
| 封裝： | 5 X 5 MM, EXPOSED PAD, LLP-16 |
| 文件頁數： | 1/23頁 |
| 文件大?。?/td> | 936K |
| 代理商： | LM5026SDX |
LM5026
Active Clamp Current Mode PWM Controller
General Description
The LM5026 PWM controller contains all of the features
necessary to implement power converters utilizing the active
clamp / reset technique with current mode control. With the
active clamp technique, higher efficiencies and greater
power densities can be realized compared to conventional
catch winding or RDC clamp / reset techniques. Two control
outputs are provided, the main power switch control
(OUT_A) and the active clamp switch control (OUT_B). The
device can be configured to control either a P-Channel or
N-Channel clamp switch. The main gate driver features a
compound
configuration,
consisting
of
both
and Bipolar devices, providing superior gate drive character-
istics. The LM5026 can be configured to operate with bias
voltages over a wide input range of 8V to 100V. Additional
features include programmable maximum duty cycle, line
under-voltage lockout, cycle-by-cycle current limit, hiccup
mode fault operation with adjustable timeout delay, PWM
slope compensation, soft-start, 1MHz capable oscillator with
synchronization input / output capability, precision reference
and thermal shutdown.
MOS
Features
n
Current Mode Control
n
Internal 100V Start-up Bias Regulator
n
3A Compound Main Gate Driver
n
High Bandwidth Opto-coupler Interface
n
Programmable Line Under-Voltage Lockout (UVLO) with
Adjustable Hysteresis
n
Versatile Dual Mode Over-Current Protection with hiccup
delay timer
n
Programmable Overlap or Deadtime between the Main
and Active Clamp Outputs
n
Programmable Maximum Duty Cycle Clamp
n
Programmable Soft-start
n
Leading Edge Blanking
n
Resistor Programmed 1MHz Capable Oscillator
n
Oscillator Sync I/O Capability
n
Precision 5V Reference
Packages
n
TSSOP-16
n
LLP-16 (5x5 mm) Thermally Enhanced (
Available
Soon
)
Typical Application Circuit
20147901
Simplified Forward Power Converter with Active Clamp Reset
August 2005
L
2005 National Semiconductor Corporation
DS201479
www.national.com
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| LM5030MM | 100V Push-Pull Current Mode PWM Controller |
| LM5030MMX | 100V Push-Pull Current Mode PWM Controller |
| LM556 | Dual Timer |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM5026SDX/NOPB | 功能描述:電流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| LM5027 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Voltage Mode Active Clamp Controller |
| LM5027A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Evaluation Board evaluation board is designed to provide |
| LM5027A-EVAL/NOPB | 功能描述:電源管理IC開發工具 LM5027A EVAL BRD RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM5027AMH/NOPB | 功能描述:電壓模式 PWM 控制器 Active Clamp Pwm W/3A Sr Drv RoHS:否 制造商:Texas Instruments 輸出端數量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
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