DC1961A Flyback, Forward, and Isolated Controller by Analog Devices

Status: Production
Series: LT3748
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

The LT3748 is a switching regulator controller specifically designed for the isolated flyback topology and capable of high power. It drives a low side external N-channel power MOSFET from an internally regulated 7V supply. No third winding or opto-isolator is required for regulation as the part senses the isolated output voltage directly from the primary-side flyback waveform.The LT3748 utilizes boundary mode to provide a small magnetic solution without compromising load regulation. Operating frequency is set by load current and transformer magnetizing inductance. The gate drive of the LT3748 combined with a suitable external MOSFET allow it to deliver load power up to several tens of watts from input voltages as high as 100V.The LT3748 is available in a high voltage 16-lead MSOP package with four leads removed.

Where to Buy

Prices starting from US$202.09

Distributor Stock
Logo for Newark
Newark Electronics
from US$233.97
6
in stock
Buy Now
Logo for element14 Singapore
element14
from US$259.05
6
in stock
Buy Now
Logo for Farnell UK
Farnell
from US$202.09
6
in stock
Buy Now
Logo for Richardson RFPD
Richardson RFPD
from US$257.44
0
in stock
Buy Now
Buy Now

Features

5V to 100V Input Voltage Range
1.9A Average Gate Drive Source and Sink Current
Boundary Mode Operation
No Transformer Third Winding or Opto-Isolator Required for Regulation
Primary-Side Winding Feedback Load Regulation
VOUT Set with Two External Resistors
INTVCC Pin for Control of Gate Driver Voltage
Programmable Soft Start
Programmable Undervoltage Lockout
Available in MSOP Package
AEC-Q100 Qualified for Automotive Applications

Last 6 months Inventory & Pricing History


Alternative Descriptions

Demonstration Board, Flyback Conv Rohs Compliant: Yes |Analog Devices, Inc. DC1961A | Newark Electronics
DEMONSTRATION BOARD, FLYBACK CONV | element14
LT8309 Gate and Power Driver 11.4V to 12.6V Output Demonstration Circuit | Richardson RFPD


DC1961A Development Boards & Evaluation Kits by Linear Technology

DEMO BOARD FLYBACK CONVERTER

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Demonstration circuit 1961A features the LT®8309, a secondary synchronous driver in an isolated, no optocoupler, flyback converter. It regulates a 12V, 5A output from a 36V to 72V input source. configuration allows the synchronous MOSFET to remain conducting at all times, even when output is shorted to ground, so as to provide a very robust short circuit performance. Output regulation is handled on the primary side by the LT3748, a boundary conduction mode flyback controller which senses output voltage directly from the primary, resulting in a simple flyback schematic with no opto-coupler. The Performance Summary table summarizes the performance of the demo board at room temperature. For thermally critical applications, proper amount of air flow can help to reduce power components’ temperature rise, therefore greatly improving circuit reliability. The LT8309 synchronous rectifier driver replicates the behavior of a diode by sensing the synchronous MOSFET drain-to-source voltage to determine its turn on period. By replacing the diode with a N-channel MOSFET, applications are no longer restricted by the heat constraints of the rectifier diode. On the DC1961A, the LT8309 is biased from the rectified drain voltage node of secondary side synchronous MOSFET, not directly connecting to output voltage. This The LT8309 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 1961A.

Features


Specifications

Silicon Manufacturer Linear Technology
Silicon Core Number LT8309
Kit Application Type Power Management - Voltage Regulator
Application Sub Type Flyback Converter
Kit Contents Demo Board
Product Range -
Automotive Qualification Standard -
SVHC No SVHC (15-Jan-2018)
Features 5A/12V No-Opto Converter with Synchronous Rectifier Vin 36V to 72V Secondary Side MOSFET Biasing

Frequently Asked Questions

Where can I find additional details, specifications and documents for a DC1961A?

Additional datasheets, footprints and schematics for DC1961A are listed on our Part Details page. You can also find images and similar parts to DC1961A on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for DC1961A on our Product Comparison page. Access via the 'View Pricing & Stock' button to view DC1961A price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does DC1961A fall under?

The DC1961A is listed under Flyback, Forward, and Isolated Controller.

Can I view similar or alternative parts?

You can view similar parts to DC1961A when available in the Flyback, Forward, and Isolated Controller range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the DC1961A you can contact the distributor directly for product support, shipping queries etc.

Is the DC1961A RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

Which authorised distributors for DC1961A have stock available?

Authorised distributors including Newark Electronics, element14, Farnell and Richardson RFPD have stock available or on a lead time for DC1961A.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for DC1961A often in real-time on the comparison pages.

What if I can't find stock of DC1961A?

You can fill out our help required form which you can use to request a quote for DC1961A from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.