LT8316
Info: : PRODUCTION
searchIcon
cartIcon

LT8316

560VIN Micropower No-Opto Isolated Flyback Controller

Show More showmore-icon

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 13
1ku List Price Starting From $2.57
Features
  • Wide Input Voltage Range: 16V to 560V (600V max)
  • No Opto-Isolator Required for Regulation
  • Quasi-Resonant Boundary Mode Operation
  • Constant-Current and Constant-Voltage Regulation
  • Low-Ripple Light Load Burst Mode® Operation
  • Low Quiescent Current: 75μA
  • Programmable Current Limit and Soft-Start
  • TSSOP Package with High-Voltage Pin Spacing
  • Available in 20(15)-Lead Package with Extended Creepage Distance
  • AEC-Q100 Compliant with Exception
    • HBM ESD Classification Level 1C
Additional Details
show more Icon

The LT8316 is a micropower, high voltage flyback controller. No opto-isolator is needed for regulation. The device samples the output voltage from the isolated flyback waveform appearing across a third winding on the transformer. Quasi-resonant boundary mode operation improves load regulation, reduces transformer size, and maintains high efficiency.

At start-up, the LT8316 charges its INTVCC capacitor via a high voltage current source. During normal operation, the current source turns off and the device draws its power from a third winding on the transformer minimizing standby power dissipation. 

The LT8316 operates from a wide range of input supply voltages and can deliver up to 100W of power. It is available in a thermally enhanced 20-pin TSSOP package with four pins removed for high-voltage spacing.

APPLICATIONS

  • Isolated Telecom, Automotive, Industrial, Medical Power Supplies
  • Isolated Off-Line Housekeeping Power Supplies
  • Electric Vehicles and Battery Stacks
  • Multioutput Isolated Power Supplies for Inverter Gate Drives
Part Models 13
1ku List Price Starting From $2.57

close icon
Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT8316EFE#PBF
  • HTML
  • HTML
LT8316EFE#TRPBF
  • HTML
  • HTML
LT8316EFE#WPBF
  • HTML
  • HTML
LT8316EFE#WTRPBF
  • HTML
  • HTML
LT8316HFE#PBF
  • HTML
  • HTML
LT8316HFE#TRPBF
  • HTML
  • HTML
LT8316IF#PBF
  • HTML
  • HTML
LT8316IF#TRPBF
  • HTML
  • HTML
LT8316IF#WPBF
  • HTML
  • HTML
LT8316IF#WTRPBF
  • HTML
  • HTML
LT8316IFE#PBF
  • HTML
  • HTML
LT8316IFE#TRPBF
  • HTML
  • HTML
LT8316IFE#WPBF
  • HTML
  • HTML

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Apr 6, 2022

- 22_0068

Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

LT8316EFE#PBF

PRODUCTION

LT8316EFE#TRPBF

PRODUCTION

LT8316EFE#WPBF

PRODUCTION

LT8316EFE#WTRPBF

PRODUCTION

LT8316HFE#PBF

PRODUCTION

LT8316HFE#TRPBF

PRODUCTION

LT8316IFE#PBF

PRODUCTION

LT8316IFE#TRPBF

PRODUCTION

LT8316IFE#WPBF

PRODUCTION

May 17, 2019

- 19_0067

Notification of Wafer Fab Location Change for 0.35 BCD Process

LT8316EFE#PBF

PRODUCTION

LT8316EFE#TRPBF

PRODUCTION

LT8316IFE#PBF

PRODUCTION

LT8316IFE#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Apr 6, 2022

- 22_0068

arrow down

Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

LT8316EFE#PBF

PRODUCTION

LT8316EFE#TRPBF

PRODUCTION

LT8316EFE#WPBF

PRODUCTION

LT8316EFE#WTRPBF

PRODUCTION

LT8316HFE#PBF

PRODUCTION

LT8316HFE#TRPBF

PRODUCTION

LT8316IFE#PBF

PRODUCTION

LT8316IFE#TRPBF

PRODUCTION

LT8316IFE#WPBF

PRODUCTION

May 17, 2019

- 19_0067

arrow down

Notification of Wafer Fab Location Change for 0.35 BCD Process

LT8316EFE#PBF

PRODUCTION

LT8316EFE#TRPBF

PRODUCTION

LT8316IFE#PBF

PRODUCTION

LT8316IFE#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 3

reference details image

DC2793A

LT8316 Demo Board | High VIN No Opto Synchronous Flyback Converter

zoom

DC2793A

LT8316 Demo Board | High VIN No Opto Synchronous Flyback Converter

LT8316 Demo Board | High VIN No Opto Synchronous Flyback Converter

Product Detail

Demonstration circuit 2793A is a high VIN no-opto synchronous flyback converter featuring the LT8316. The demo board outputs 5V and maintains tight regulation with a load current from 70mA to 7A. It is optimized to operate over a wide 140V to 450V DC input voltage range. Output voltage accuracy stays within ±5% over the entire input voltage and load range. 

On the secondary side, the LT8309 synchronous rectifier driver senses the synchronous MOSFET drain-to-source voltage to determine its turn-on period. By replacing the diode rectifier with an N-Channel MOSFET, the efficiency and thermal performance is greatly improved. 

The LT8316 is a 600V flyback controller. No opto-isolator is needed for regulation. The part samples the output voltage from the isolated flyback waveform appearing across a third winding on the transformer. Quasi-resonant boundary mode operation improves load regulation. At start-up, the INTVCC capacitor is charged via a high voltage current source; during normal operation, the current source turns off to save power consumption.

DC2793A features an option to turn on standby mode by simply changing the position of a jumper from “DIS” to “EN”. Standby mode reduces the minimum switching frequency to 220Hz for ultralow quiescent power consumption.

The LT8316 and LT8309 data sheets give a complete description of the parts, and operation and application information. The data sheets must be read in conjunction with this quick start guide for demo circuit 2793A.

reference details image

DC2718A

LT8316 Demo Board | Isolated Flyback Converter: 100V to 600VIN, VOUT = 12V @ Up to 3A

zoom

DC2718A

LT8316 Demo Board | Isolated Flyback Converter: 100V to 600VIN, VOUT = 12V @ Up to 3A

LT8316 Demo Board | Isolated Flyback Converter: 100V to 600VIN, VOUT = 12V @ Up to 3A

Product Detail

Demonstration circuit 2718A is a no-opto flyback converter featuring the LT8316. The demo board outputs 12V and maintains tight regulation with a load current from 30mA to 3A. It is optimized to operate over a wide 100V to 600V DC input voltage range. Output voltage accuracy stays within ±5% over the entire input voltage and load range.

The LT8316 is a high voltage flyback controller. No optoisolator is needed for regulation. The part samples the output voltage from the isolated flyback waveform appearing across a third winding on the transformer. Quasi-resonant boundary mode operation improves load regulation. The LT8316 is available in a thermally enhanced 20-pin TSSOP package with four pins removed for high-voltage spacing.

The LT8316 data sheet gives a complete description of the part, operation and application information. The data sheet must be read in conjunction with this quick start guide for demo circuit 2718A. 

reference details image

DC2781A

Nonisolated Buck Converter, 19V to 600VIN, VOUT = 12V @ Up to 200mA

zoom

DC2781A

Nonisolated Buck Converter, 19V to 600VIN, VOUT = 12V @ Up to 200mA

Nonisolated Buck Converter, 19V to 600VIN, VOUT = 12V @ Up to 200mA

Product Detail

Demonstration circuit 2781A is a nonisolated buck converter featuring the LT8316. The demo board outputs 12V and maintains tight regulation with a load current from 10mA to 0.2A. It is optimized to operate over a wide 19V to 600V DC input voltage range. Output voltage accuracy stays within ±1% over the entire input voltage and load range.

The LT8316 is a high voltage flyback controller that can implement a high voltage buck converter if isolation is not needed. The nonisolated buck converter is a smaller, lower cost solution than the flyback converter.

Quasi-resonant boundary mode operation improves load regulation. The LT8316 is available in a thermally enhanced 20-pin TSSOP package with four pins removed for high voltage spacing.

The LT8316 datasheet gives a complete description of the part, operation and application information. The datasheet must be read in conjunction with the DC2781A demo manual.

Tools & Simulations

Tools & Simulations 1

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

Recently Viewed