LTC3705是2-Switch Forward Controller and Gate Driver

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LTC3705 - LTC3705是2-Switch Forward Controller and Gate Driver

LTC3705是Linear公司的一款反激式、正激式和隔离式控制器产品，LTC3705是2-Switch Forward Controller and Gate Driver，本站介绍了LTC3705的封装应用图解、特点和优点、功能等，并给出了与LTC3705相关的凌力尔特元器件型号供参考。

LTC3705 - 2-Switch Forward Controller and Gate Driver

LTC3705 - 2-Switch Forward Controller and Gate Driver - Linear Technology（凌力尔特）

功能描述

The LTC3705 is a controller for a 2-switch forward converter and includes on-chip bottom and top gate drivers that do not require external transformers. For secondary-side control, combine the LTC3705 with the LTC3706 PolyPhase secondary-side synchronous forward controller to create a complete forward converter using a minimum of discrete parts. A proprietary scheme is used to multiplex gate drive signals across the isolation barrier through a tiny pulse transformer. The on-chip rectifier and the same pulse transformer provide gate drive bias power.

Alternatively, the LTC3705 can be used as a standalone voltage mode controller in a primary-side control architecture with optoisolator feedback. Voltage feedforward provides excellent line regulation and transient response.

特点

High-Speed Top and Bottom Gate Drivers for

2-Switch Forward Converter

On-Chip Rectifier and Self-Starting Architecture

Eliminate Need for Separate Gate Drive Bias Supply

Wide Input Voltage Supply Range: 18V to 80V

Tolerant of 100V Input Voltage Transients

Linear Regulator Controller for Fast Start-Up

Precision UVLO with Adjustable Hysteresis

Overcurrent Protection

Volt-Second Limit Prevents Transformer Core Saturation

Voltage Feedforward for Fast Transient Response

Available in 16-Lead Narrow SSOP Package

应用

Isolated 48V Telecommunication Systems

Internet Servers and Routers

Distributed Power Step-Down Converters

Automotive and Heavy Equipment

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LTC3705EGN	SSOP-16	E	$3.76	$2.63
LTC3705EGN#PBF	SSOP-16	E	$3.76	$2.63
LTC3705EGN#TR	SSOP-16	E		$2.69
LTC3705EGN#TRPBF	SSOP-16	E		$2.69
LTC3705IGN	SSOP-16	I	$4.03	$2.89
LTC3705IGN#PBF	SSOP-16	I	$4.03	$2.89
LTC3705IGN#TR	SSOP-16	I		$2.95
LTC3705IGN#TRPBF	SSOP-16	I		$2.95