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LM5026MTX

  

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National-Semiconductor
National ->Texas Instruments
LM5026MTX_2005 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 MOS and Bipolar devices, providing superior gate drive characteristics. 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.

Features
■ Current Mode Control
■ Internal 100V Start-up Bias Regulator
■ 3A Compound Main Gate Driver
■ High Bandwidth Opto-coupler Interface
■ Programmable Line Under-Voltage Lockout (UVLO) with
   Adjustable Hysteresis
■ Versatile Dual Mode Over-Current Protection with hiccup
   delay timer
■ Programmable Overlap or Deadtime between the Main
   and Active Clamp Outputs
■ Programmable Maximum Duty Cycle Clamp
■ Programmable Soft-start
■ Leading Edge Blanking
■ Resistor Programmed 1MHz Capable Oscillator
■ Oscillator Sync I/O Capability
■ Precision 5V Reference

Packages
■ TSSOP-16
■ LLP-16 (5x5 mm) Thermally Enhanced (Available Soon)


other parts : LM5026_2005  LM5026MT_2005  LM5026SD_2005  LM5026SDX_2005  
LM5026MTX PDF
National-Semiconductor
National ->Texas Instruments
LM5026MTX 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 MOS and Bipolar devices, providing superior gate drive characteristics. 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.

Features
■ Current Mode Control
■ Internal 100V Start-up Bias Regulator
■ 3A Compound Main Gate Driver
■ High Bandwidth Opto-coupler Interface
■ Programmable Line Under-Voltage Lockout (UVLO) with
   Adjustable Hysteresis
■ Versatile Dual Mode Over-Current Protection with hiccup
   delay timer
■ Programmable Overlap or Deadtime between the Main
   and Active Clamp Outputs
■ Programmable Maximum Duty Cycle Clamp
■ Programmable Soft-start
■ Leading Edge Blanking
■ Resistor Programmed 1MHz Capable Oscillator
■ Oscillator Sync I/O Capability
■ Precision 5V Reference

Packages
■ TSSOP-16
■ LLP-16 (5x5 mm) Thermally Enhanced


other parts : LM5026MT  LM5026SD  LM5026SDX  LM5026  
LM5026MTX PDF
TI
Texas Instruments
LM5026MTX/NOPB Active Clamp Current Mode PWM Controller

Description
The LM5026 PWM controller contains all of the features necessary to implement power converters utilizing the active clamp and 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 and 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 MOS and Bipolar devices, providing superior gate drive characteristics. The LM5026 can be configured to operate with bias voltages over a wide input range of 8 V to 100 V. Additional features include programmable maximum duty cycle, line undervoltage lockout, cycle-by-cycle current limit, hiccup mode fault operation with adjustable timeout delay, PWM slope compensation, soft-start, 1-MHz capable oscillator with synchronization input and output capability, precision reference, and thermal shutdown.

Features
• Current-Mode Control
• Internal 100-V Start-Up Bias Regulator
• 3-A Compound Main Gate Driver
• High Bandwidth Optocoupler Interface
• Programmable Line Undervoltage Lockout (UVLO)
   With Adjustable Hysteresis
• Versatile Dual Mode Overcurrent Protection With
   Hiccup Delay Timer
• Programmable Overlap or Deadtime between the
   Main and Active Clamp Outputs
• Programmable Maximum Duty Cycle Clamp
• Programmable Soft-Start
• Leading Edge Blanking
• Resistor Programmed 1-MHz Capable Oscillator
• Oscillator Sync I/O Capability
• Precision 5-V Reference

Applications
• Server Power Supplies
• 48-V Telecom Power Supplies
• High Efficiency DC–DC Power Supplies


other parts : LM5026  LM5026MT  LM5026MT/NOPB  LM5026SD/NOPB  LM5026SDX/NOPB  
LM5026MTX/NOPB PDF

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