LM5026 - 有源钳位电流模式 PWM 控制器

LM5026是TI德州仪器公司的一款PWM与谐振控制器产品，LM5026是有源钳位电流模式 PWM 控制器，本站介绍了LM5026的封装应用图解、特点和优点、功能等，并给出了与LM5026相关的TI元器件型号供参考。

LM5026 - 有源钳位电流模式 PWM 控制器 - PWM与谐振控制器 - 离线隔离型DC/DC控制器和转换器 - 德州仪器

产品特性

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

产品应用

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

产品说明

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.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LM5026	WSON (16)	5.00 mm × 5.00 mm
LM5026	TSSOP (16)	4.40 mm × 5.00 mm

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