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Analog Devices LTC3859ALEUHF | Demoboard DC2122A

DC2122A - LTC3859ALEUHF Demo Board | 4.5V ≤ VIN ≤ 36V; VOUT1: 5V @ 5A, VOUT2: 8.5V @ 3A, VOUT3: 10V @ 7A

Overview

TopologyBoost Converter
Input voltage4.5-36 V
Output 110 V / 2 A
IC revision2

Description

Demonstration circuit 2122A is a triple output synchronous step-up/dual step-down supply featuring the LTC®3859AL. This demonstration circuit is designed for two buck 5V/5A, 8.5V/3A outputs supplied by a boosted 10V/7A output. Benefiting from this feature, the buck outputs are able tomaintain regulation over a wide input voltage range of 4.5V to 36V which is suitable for automotive or other battery fed applications. Also, the demonstration circuit uses a drop-in layout that the main buck circuit components fit in an area of ¾" by 1½", while the main boost circuit area is ¾" by 1¾". The package style for the LTC3859AL is a 38-pin exposed pad QFN package. The main features of the board include rail tracking (buckchannels only), an internal 5V linear regulator for bias, separated RUN pins for each output, a PGOOD signal (CH1 only), an overvoltage indicator for CH3 and a Mode selector that allow the converter to run in CCM, pulse skip or Burst Mode® operation. Synchronization to an external clock isalso possible. The LT3859AL data sheet gives a complete description of these parts, operation and application information.The data sheet must be read in conjunction with this quick start guide for demo circuit 2122A.

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
SamplesAvailability & Sample
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SPECWE-HCI SMT Flat Wire High Current Inductor, 1.2 µH, 32.6 A
Simu­lation
Availability
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance1.2 µH
Performance Rated Current32.6 A
Saturation Current @ 10%12 A
Saturation Current @ 30%25 A
DC Resistance1.8 mΩ
Self Resonant Frequency75 MHz
MaterialSuperflux 
Packaging Unit700 
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