用于升压转换器和 SEPIC 的 60V 宽输入电压低侧控制器 - LM5022

LM5022 (正在供货)

用于升压转换器和 SEPIC 的 60V 宽输入电压低侧控制器

 

备选器件推荐

  • LM5122  -  3-65V wider Vin and synchronous

描述

The LM5022 device is a high-voltage, low-side, N-channel MOSFET controller ideal for use in boost and SEPIC regulators. It contains all of the features required to implement single-ended primary topologies. Output voltage regulation is based on current-mode control, which eases the design of loop compensation while providing inherent input voltage feedforward. The LM5022 includes a start-up regulator that operates over a wide input range of 6 V to 60 V. The PWM controller is designed for high-speed capability including an oscillator frequency range up to 2.2 MHz and total propagation delays less than 100 ns. Additional features include an error amplifier, precision reference, line undervoltage lockout, cycle-by-cycle current limit, slope compensation, soft start, external synchronization capability, and thermal shutdown. The LM5022 is available in the 10-pin VSSOP package.

特性

  • Internal 60-V Start-Up Regulator
  • 1-A Peak MOSFET Gate Driver
  • VIN Range: 6 V to 60 V (Operates Down to 3 V After Start-Up)
  • Duty Cycle Limit of 90%
  • Programmable UVLO With Hysteresis
  • Cycle-by-Cycle Current Limit
  • External Synchronizable (AC-Coupled)
  • Single Resistor Oscillator Frequency Set
  • Slope Compensation
  • Adjustable Soft Start
  • 10-Pin VSSOP Package

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参数 与其它产品相比 升压控制器 (外部开关)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Switch Current Limit (Typ) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Iout (Max) (A)
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
LM5022 LM3481 LM3481-Q1
6    2.97    2.97   
60    48    48   
1.25    1.275    1.275   
300    500    500   
10    10    10   
1    1    1   
170    100    100   
1000    1000    1000   
3.5    3.7    3.7   
Enable
Frequency Synchronization
UVLO Adjustable   
Adjustable Current Limit
Enable
Frequency Synchronization
Light Load Efficiency
Pre-Bias Start-Up
UVLO Adjustable   
Adjustable Current Limit
Enable
Frequency Synchronization
Light Load Efficiency
Pre-Bias Start-Up
UVLO Adjustable   
10    10    10   
90    85    85   
-40 to 125    -40 to 125    -40 to 125   
Catalog    Catalog    Automotive   
VSSOP    VSSOP    VSSOP   

其它合格版本 LM5022

版本 器件型号 定义
汽车电子 LM5022-Q1 Q100 适用于追求零缺陷的高可靠性汽车电子应用的器件
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WEBENCH® Designer LM5022

  最小   最大 范围
输入电压  V 6.0 to 60.0V
输出电压  V 6 to 300V
输出电流  A ≤ 10A
环境温度  °C -40 to 125°C


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