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Analog Devices LT8228 | Demoboard DC2351A

Bidirectional Synchronous 100V Buck/Boost Controller with Reverse Supply, Reverse Current and Fault Protection

Overview

TopologyBoost Converter
Input voltage8-14 V
Switching frequency80-600 kHz
Output 148 V / 7 A
IC revisionRev 0

Description

Demonstration circuit 2351A is a high voltage, high efficiency synchronous buck or boost DC/DC converter. It is designed to have 36V to 56V on one side and 8V to 14V on the other side. It can supply a 35A maximum output current in buck mode and delivers 7A of current in boost mode. The demo board features the LT8228EFE controller. This part can seamlessly transition from bucking to boosting. With built-in circuit breaker function and other protection features, the LT8228 is ideal for high reliability systems requiring N+1 redundancy or other protections in industrial, automotive, medical, military, and avionics applications. The DC2351A is designed to be paralleled with other DC2351A boards to increase the total output current. With adequate heatsinking or airflow, the output current can be increased.

Features

  • Bidirectional Voltage or Current Regulation
  • Bidirectional Reverse Current Protection
  • Input and Output Negative Voltage Protection to –60V
  • Bidirectional Inrush Current Limit and Boost Output Short Protection
  • Switching MOSFET Short Detection and Protection
  • 10V Gate Drive n Wide Input and Output Voltage Range Up to 100V n Feedback Voltage Tolerance: ±1.0% Over Temperature n Bidirectional Programmable Current Regulation and Monitoring
  • Extensive Self-Test, Diagnostics and Fault Reporting
  • Programmable Fixed or Synchronizable Switching Frequency: 80kHz to 600kHz n Programmable Soft-Start and Dynamic Current Limit n Masterless, Fault Tolerant Current Sharing

Typical applications

  • High Power System Backup and Supply Stabilization / “N+1” Redundant, High Reliability Power Supplies / Power Interrupt Protection System
  • Dual Battery Automotive and Industrial Systems

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
CTol. CVR
(V (DC))
SizeOperating TemperatureDF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
PackagingL
(µH)
Tol. LIR
(A)
ISAT
(A)
RDC max.
(mΩ)
fres
(MHz)
Core MaterialTechnical ReferenceVDC
(V)
VBR
(V)
IPeak
(A)
PDiss
(mW)
VClamp max.
(V)
Samples
150120GS75000SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WL-SMCW SMT Mono-color Chip LED Waterclear 525 Green 515 450 3.2 InGaN 140 1206 -40 °C up to +85 °C 3.2 1.6 0.68 Tape and Reel 105
150120RS75000SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WL-SMCW SMT Mono-color Chip LED Waterclear 625 Red 630 150 2 AlInGaP 140 1206 -40 °C up to +85 °C 3.2 1.6 0.68 Tape and Reel 72
885012206006SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 10 V(DC)470 pF ±10% 10 0603 -55 °C up to +125 °C 510 GΩ X7R Class II 1.6 0.8 0.8 0.4 7" Tape & Reel X7R0603471K010DFCT10000
824501601SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WE-TVSP Power TVS Diode DO-214AC -65 °C up to +150 °C 4.24 2.67 2.25 SMAJ60CA 60 70.2 4.1 400000 96.8
7443763540100SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-HCFT THT High Current Inductor 3540 -40 °C up to +125 °C 41 36 35 10 ±20% 56.7 62 1.2 14 MnZn
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
CTol. CVR
(V (DC))
SizeOperating TemperatureDF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
PackagingL
(µH)
Tol. LIR
(A)
ISAT
(A)
RDC max.
(mΩ)
fres
(MHz)
Core MaterialTechnical ReferenceVDC
(V)
VBR
(V)
IPeak
(A)
PDiss
(mW)
VClamp max.
(V)
Samples