LT8310

PRODUCTION

100VIN Forward Converter Controller

Data Sheet Product Selection Table
Part Models
8
1ku List Price
Starting From $3.60
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Part Details

  • Input Voltage Range: 6V to 100V
  • Duty Mode Control Regulates an Isolated Output without an Opto
  • High Efficiency Synchronous Control
  • Short-Circuit (Hiccup Mode) Overcurrent Protection
  • Programmable OVLO and UVLO with Hysteresis
  • Programmable Frequency (100kHz to 500kHz)
  • Synchronizable to an External Clock
  • Positive or Negative Polarity Output Voltage Feedback with a Single FBX Pin
  • Programmable Soft-Start
  • Low Shutdown Current < 1μA
  • Available in FE20 TSSOP with HV Pin Spacing
LT8310
100VIN Forward Converter Controller
78 Watt Isolated Forward Converter, ±8% VOUT Output Voltage Load Regulation Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 2

Technical Articles 3

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Hardware Ecosystem

Parts Product Life Cycle Description
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LTC4366
RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper
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Tools & Simulations

LTspice 4

Models for the following parts are available in LTspice:

  • LT8310
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

eval board
schematic 1
DC1963A

LT8310EFE Demo Board | Isolated Forward Converter, 36V ≤ VIN ≤ 72V; VOUT = 12V @ 6A

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Product Details

Demonstration circuit 1963A is a resonant reset forward converter featuring the LT8310 controller. This circuit was designed to demonstrate the high level of performance, and small solution size attainable using the LT8310. It operates at a 250kHz switching frequency, and regulates a 12V, 6A output from a 36V to 72V input source, making it well suited for telecom, industrial, and other applications. Table 1 summarizes the performance of the DC1963A.


Output regulation is handled on the secondary side by the LT1431, which is an adjustable shunt voltage regulator providing feedback to the primary side via an opto-coupler.

eval board
schematic 2
DC2015A

LT8310EFE/LT8311EFE Isolated Demo Board | 36V ≤ VIN ≤ 72V; VOUT = 12V @ 12A

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Product Details

Demonstration circuit 2015A is a resonant reset forward converter with synchronous rectification featuring the LT8310/LT8311 chipset. This circuit was designed to demonstrate the high levels of performance, efficiency, and small solution size attainable using these parts. It operates at 240kHz and produces a regulated 12V, 12A output from an input voltage range of 36V to 72V: suitable for telecom, industrial, and other applications. It has an eighth-brick footprint area. Synchronous rectification helps to attain efficiency exceeding 94%.
DC1963A
LT8310EFE Demo Board | Isolated Forward Converter, 36V ≤ VIN ≤ 72V; VOUT = 12V @ 6A
DC1963A - Schematic
DC2015A
LT8310EFE/LT8311EFE Isolated Demo Board | 36V ≤ VIN ≤ 72V; VOUT = 12V @ 12A
DC2015A - Schematic

Latest Discussions

2 Years Ago
RE: LT8310 Duty Control + Minimum Load &amp; FB MODE
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