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Analog Devices LT8277 | Demoboard EVAL-LT8277-AZ

High Power Multiphase Step-Up Controller

Overview

TopologyBoost Converter
Input voltage9-36 V
Switching frequency100-2000 kHz
Output 160 V / 3 A

Description

Evaluation circuit EVAL-LT8277-AZ is a dual-phase non-synchronous high-power step-up converter featuring the LT8277. It regulates the output voltage up to 60V and drives up to a 3A load at 60V when the VIN is between 9V and 36V. The EVAL-LT8277-AZ runs at 200kHz switching frequency with the ability to turn on spread spectrum frequency modulation (SSFM) for reduced EMI emission. It can run with or without SPI communications. Multiple EVAL-LT8277-AZ can be paralleled to deliver more output power. A graphic user interface (GUI) is available when connected to a DC2026C Linduino One demo circuit.

Features

  • Wide Input Voltage Range: 3V to 40V
  • 2-Phase Interleaved Operation Reduces Input and Output Capacitance Requirements
  • SPI Interface for Output Voltage Adjustment
  • Low Shutdown Current < 1μA
  • Internal 5V Low Dropout Voltage Regulator Supplied from VIN or VOUT
  • PGOOD Output Status Reporting Pin
  • Programmable Internal Frequency: 100kHz to 2MHz
  • Frequency Synchronization
  • Clock Output for 4- or 8-Phase Operation
  • Spread Spectrum Frequency Modulation (SSFM) for EMI Reduction
  • Available in a 3mm × 4mm 20-Lead Side Solderable QFN Package
  • AEC-Q100 Qualified for Automotive Applications

Typical applications

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(mm)
f
(mm)
CVR
(V (DC))
Endurance
(h)
Operating TemperatureIRIPPLE
(mA)
Z
(mΩ)
ILeak
(µA)
DF
(%)
Ø D
(mm)
Pins (Value)
(pcs)
RowsGenderTypeIR
(A)
Packaging Samples
62000621121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.00 mm THT Dual Pin Header 6 6 Dual Pin Header Straight 2 Bag
702931000SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WA-SNSR Self-Retaining Spacer 6.4 4.8 -30 °C up to +85 °C
62000821121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.00 mm THT Dual Pin Header 8 -40 °C up to +105 °C 8 Dual Pin Header Straight 2 Bag
865080657018SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-ASLI Aluminum Electrolytic Capacitors 10.5220 µF 50 2000 -55 °C up to +105 °C 650 230 110 12 10 15" Tape & Reel
Order Code Data­sheet Simu­lation
62000621121SPEC
702931000SPEC
62000821121SPEC
865080657018SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(mm)
f
(mm)
CVR
(V (DC))
Endurance
(h)
Operating TemperatureIRIPPLE
(mA)
Z
(mΩ)
ILeak
(µA)
DF
(%)
Ø D
(mm)
Pins (Value)
(pcs)
RowsGenderTypeIR
(A)
Packaging Samples