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UG-2077中文資料亞德諾數(shù)據(jù)手冊PDF規(guī)格書

UG-2077
廠商型號

UG-2077

功能描述

Evaluating the LTC3313 5 V, 15 A Synchronous Step-Down Silent Switcher in 3 mm × 3 mm LQFN

文件大小

875.96 Kbytes

頁面數(shù)量

11

生產(chǎn)廠商 Analog Devices
企業(yè)簡稱

AD亞德諾

中文名稱

亞德諾半導(dǎo)體技術(shù)有限公司官網(wǎng)

原廠標(biāo)識
數(shù)據(jù)手冊

下載地址一下載地址二到原廠下載

更新時(shí)間

2024-12-25 11:50:00

UG-2077規(guī)格書詳情

GENERAL DESCRIPTION

The EVAL-LTC3313EV-A-Z features the LTC3313, 15 A low voltage

synchronous step-down Silent Switcher? that operates as a 2 MHz,

2.25 V to 5.5 V input, 1.2 V, 15 A output buck regulator. The

LTC3313 supports an output voltage (VOUT) from 0.5 V to the input

voltage (VIN) with operating frequencies from 500 kHz up to 5 MHz.

The LTC3313 is a compact, ultralow emission, high-efficiency, and

high speed synchronous monolithic step-down switching regulator.

The Silent Switcher technology optimizes fast-current loops and

makes it easier to minimize electromagnetic interference (EMI)

and electromagnetic compatibility (EMC) emissions. The minimum

on-time of 35 ns typical enables high VIN to low VOUT conversion at

a high frequency.

The EVAL-LTC3313EV-A-Z runs in forced continuous mode with a

2 MHz switching frequency (fSW); however, it can be configured to

run at different switching frequencies or in pulse-skipping mode.

The LTC3313 oscillator can also synchronize to an external clock

using a MODE/SYNC turret, with the EVAL-LTC3313EV-A-Z default

setup. Figure 4 shows the efficiency and power loss of the EVALLTC3313EV-

A-Z with a 3.3 V input in both operation modes.

The EVAL-LTC3313EV-A-Z also has an EMI filter to reduce conducted

EMI. This EMI filter can be included by applying the input

voltage at the VIN EMI terminal. The EMI performance of the board-

EVAL-LTC3313EV-A-Z is shown in the EMI Test Results section.

The red lines in the EMI performance graphs illustrate the CISPR25

Class 5 peak limits for the conducted and radiated emission tests.

The LTC3313 data sheet gives a complete description of the device

and its application information. The data sheet must be read in

conjunction with this evaluation board user guide. The LTC3313 is

assembled in a 3 mm × 3 mm LQFN package with an exposed

pad for low thermal resistance. The layout recommendations for low

EMI operation and maximum thermal performance are available in

the LTC3313 data sheet.

FEATURES

? EVAL-LTC3313EV-A-Z evaluation board

? Transient circuit included for load transient evaluation

? EMI filter included to reduce noise in EMI emission tests

? MODE pin pull-up option for pulse-skipping mode evaluation

EVALUATION KIT CONTENTS

? EVAL-LTC3313EV-A-Z evaluation board

DOCUMENTS NEEDED

? LTC3313 data sheet

? EVAL-LTC3313EV-A-Z user guide

EQUIPMENT NEEDED

? A DC voltage source

? An electronic load

? A multimeter

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