LT8310
PRODUCTION100VIN Forward Converter Controller
- Part Models
- 8
- 1ku List Price
- Starting From $4.56
Overview
- 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
The LT8310 is a simple-to-use resonant reset forward converter controller that drives the gate of a low side N-channel MOSFET from an internally regulated 10V supply. The LT8310 features duty mode control that generates a stable, regulated, isolated output using a single power transformer. With the addition of output voltage feedback, via opto-coupler (isolated) or directly wired (nonisolated), current mode regulation is activated, improving output accuracy and load response. The flexibility to choose transformer turns ratio makes high step-down or step-up ratios possible without operating at duty cycle extremes.
The user can program the switching frequency from 100kHz to 500kHz to optimize efficiency, performance or external component size. A synchronous output is available for controlling secondary side synchronous rectification to improve efficiency. User programmable protection features include monitors on input voltage (UVLO and OVLO) and switch current (overcurrent limit). The LT8310 soft-start feature helps protect the transformer from flux saturation.
Applications
- Industrial, Automotive and Military Systems
- 48V Telecommunication Isolated Power Supplies
- Isolated and Nonisolated DC/DC Converters
Documentation
Data Sheet 1
User Guide 2
Technical Articles 3
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LT8310EFE#PBF | 20-Lead TSSOP w/ EP | ||
| LT8310EFE#TRPBF | 20-Lead TSSOP w/ EP | ||
| LT8310HFE#PBF | 20-Lead TSSOP w/ EP | ||
| LT8310HFE#TRPBF | 20-Lead TSSOP w/ EP | ||
| LT8310IFE#PBF | 20-Lead TSSOP w/ EP | ||
| LT8310IFE#TRPBF | 20-Lead TSSOP w/ EP | ||
| LT8310MPFE#PBF | 20-Lead TSSOP w/ EP | ||
| LT8310MPFE#TRPBF | 20-Lead TSSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL |
||
| LT8310EFE#PBF | PRODUCTION | |
| LT8310EFE#TRPBF | PRODUCTION | |
| LT8310HFE#PBF | PRODUCTION | |
| LT8310HFE#TRPBF | PRODUCTION | |
| LT8310IFE#PBF | PRODUCTION | |
| LT8310IFE#TRPBF | PRODUCTION | |
| LT8310MPFE#PBF | PRODUCTION | |
| LT8310MPFE#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Overvoltage & Overcurrent Protectors 1 | ||
| LTC4366 | RECOMMENDED FOR NEW DESIGNS | High Voltage Surge Stopper |
| Parts | Product Life Cycle | Description |
|---|---|---|
| LT3752 LT3752-1 | RECOMMENDED FOR NEW DESIGNS | Active Clamp Synchronous Forward Controllers with Internal Housekeeping Controller |
| LT3753 | RECOMMENDED FOR NEW DESIGNS | Active Clamp Synchronous Forward Controller |
Tools & Simulations
LTspice 3
- LT8310/LT1431 Demo Circuit - 92W Isolated Nonsynchronous Forward Converter with Opto Feedback (43-53V to 54V @ 1.7A)
- LT8310/LT1431 Demo Circuit - 72 Watt Isolated Nonsynchronous Forward Converter with Opto Feedback (36-72V to 12V @ 6A)
- LT8310/LT1431 Demo Circuit - 81 Watt Isolated Nonsynchronous Forward Converter with Opto Feedback (10.8-26.4V to 54V @ 1.5A)
Models for the following parts are available in LTspice:
- LT8310
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.
