Datasheet > LM5026

LM5026

更新时间： 2024-11-24 11:12:55

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
41页	1807K
描述
具有 P 或 N 沟道钳位 FET 和 CS 重启计时器的 100V 有源钳位电流模式 PWM 控制器

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LM5026

SNVS363E –AUGUST 2005–REVISED NOVEMBER 2015

LM5026 Active Clamp Current Mode PWM Controller

1 Features

3 Description

The LM5026 PWM controller contains all of the

•

Current-Mode Control

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,

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

soft-start,

1-MHz

capable

oscillator

with

synchronization input and output capability, precision

reference, and thermal shutdown.

2 Applications

•

Server Power Supplies

Device Information⁽¹⁾

48-V Telecom Power Supplies

High Efficiency DC–DC Power Supplies

PART NUMBER

LM5026

PACKAGE

WSON (16)

TSSOP (16)

BODY SIZE (NOM)

5.00 mm × 5.00 mm

4.40 mm × 5.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Typical Application Circuit

36 - 78V

OUT

3.3V

LM5026

UVLO

OUT_A

OUT_B

REF

TIME

RES

ERROR

AMP and

ISOLATION

COMP

SYNC

AGND

DCL

PGND

SYNC I/O

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...41

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与LM5026相关器件

型号	品牌	获取价格	描述	数据表
LM5026_09	NSC	获取价格	Active Clamp Current Mode PWM Controller
LM5026MT	NSC	获取价格	Active Clamp Current Mode PWM Controller
LM5026MT	TI	获取价格	具有 P 或 N 沟道钳位 FET 和 CS 重启计时器的 100V 有源钳位电流模式 P
LM5026MT/NOPB	TI	获取价格	具有 P 或 N 沟道钳位 FET 和 CS 重启计时器的 100V 有源钳位电流模式 P
LM5026MTX	NSC	获取价格	Active Clamp Current Mode PWM Controller
LM5026MTX/NOPB	NSC	获取价格	IC 3 A SWITCHING CONTROLLER, 660 kHz SWITCHING FREQ-MAX, PDSO16, TSSOP-16, Switching Regul
LM5026MTX/NOPB	TI	获取价格	具有 P 或 N 沟道钳位 FET 和 CS 重启计时器的 100V 有源钳位电流模式 P
LM5026SD	NSC	获取价格	Active Clamp Current Mode PWM Controller
LM5026SD/NOPB	TI	获取价格	具有 P 或 N 沟道钳位 FET 和 CS 重启计时器的 100V 有源钳位电流模式 P
LM5026SDX	NSC	获取价格	Active Clamp Current Mode PWM Controller

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