Datasheet > LM5160

LM5160

更新时间： 2024-09-27 01:22:55

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
34页	1817K
描述
LM5160A, LM5160 Wide Input 65-V, 1.5-A Synchronous Buck / Fly-Buckâ¢ Converter

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LM5160A, LM5160

SNVSA03B –OCTOBER 2014–REVISED JULY 2015

LM5160A, LM5160 Wide Input 65-V, 1.5-A Synchronous Buck / Fly-Buck™ Converter

1 Features

3 Description

The LM5160 family is a 65-V, 1.5-A synchronous

step-down converter with integrated high-side and

low-side MOSFETs. The constant-on-time control

scheme requires no loop compensation and supports

high step-down ratios with fast transient response. An

internal feedback amplifier maintains ±1% output

voltage regulation over the entire operating

temperature range. The on-time varies inversely with

input voltage resulting in nearly constant switching

frequency. Peak and valley current limit circuits

protect against overload conditions. The under-

•

Wide 4.5-V to 65-V Input Voltage Range

Integrated High and Low Side Switches

•

–

No Schottky Diode Required

•

1.5-A Maximum Load Current

Constant On-Time Control

–

No External Loop Compensation

Fast Transient Response

•

Selectable Forced CCM or DCM Operation

CCM Option Supports Multi-Output Fly-Buck

Nearly Constant Switching Frequency

Frequency Adjustable up to 1 MHz

Programmable Soft-Start Time

voltage

independently

lockout

(EN/UVLO)

circuit

provides

adjustable

input

under-voltage

threshold and hysteresis. The LM5160 is

programmed through the FPWM pin to operate in

continuous conduction mode (CCM) from no load to

full load or to automatically switch to discontinuous

conduction mode (DCM) at light load for higher

efficiency. Forced CCM operation supports multiple

output and isolated Fly-Buck applications using a

coupled inductor.

Pre-Biased Startup

Peak Current Limiting Protection

Adjustable Input UVLO and Hysteresis

±1% Feedback Voltage Reference

LM5160A allows external V_CCBias

Thermal Shutdown Protection

The LM5160A shares the same features and pin

configuration as the LM5160. An external bias supply

can be connected to the VCC pin of the LM5160A in

either Buck or Fly-Buck applications. This additional

capability can improve efficiency at high input

voltages.

2 Applications

•

Industrial Programmable Logic Controller

IGBT Gate Drive Bias Supply

Device Information⁽¹⁾

Telecom Primary/Secondary Side Bias

E-meter Power Line Communication

Low Power Isolated DC-DC (Fly-Buck)

PART NUMBER

LM5160A

PACKAGE

BODY SIZE (NOM)

WSON (12)

4.0 mm × 4.0 mm

LM5160

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

the end of the datasheet.

Typical Fly-Buck Application Circuit

Typical Sync-Buck Application Circuit

V_OUT-SEC

V_IN

VIN

BST

VIN

BST

LM5160A

LM5160

V_OUT

RON

V_OUT-PRI

RON

LM5160A

LM5160

EN/UVLO

VCC

FPWM

AGND PGND

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...34

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与LM5160相关器件

型号	品牌	获取价格	描述	数据表
LM5160A	TI	获取价格	LM5160A 宽输入 65V、2A 同步降压/Fly-Buck™ 转换器
LM5160A_15	TI	获取价格	LM5160A, LM5160 Wide Input 65-V, 1.5-A Synchr
LM5160ADNTJ	TI	获取价格	LM5160A 宽输入 65V、2A 同步降压/Fly-Buck™ 转换器 \| DNT \|
LM5160ADNTR	TI	获取价格	LM5160A 宽输入 65V、2A 同步降压/Fly-Buck™ 转换器 \| DNT \|
LM5160ADNTT	TI	获取价格	LM5160A 宽输入 65V、2A 同步降压/Fly-Buck™ 转换器 \| DNT \|
LM5160DNTJ	TI	获取价格	LM5160 宽输入 65V、2A 同步降压/Fly-Buck™ 转换器 \| DNT \|
LM5160DNTR	TI	获取价格	LM5160 宽输入 65V、2A 同步降压/Fly-Buck™ 转换器 \| DNT \|
LM5160DNTT	TI	获取价格	LM5160 宽输入 65V、2A 同步降压/Fly-Buck™ 转换器 \| DNT \|
LM5160-Q1	TI	获取价格	65V 宽输入、2A 同步降压/Fly-Buck™ 转换器
LM5160QPWPQ1	TI	获取价格	65V 宽输入、2A 同步降压/Fly-Buck™ 转换器 \| PWP \| 14 \| -4

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