TEXAS INSTRUMENTS SLTS226A handbook

The PTB78520W is a 20-A rated, wide-input (18-60 V) isolated DC/DC converter that incorporates Auto-Track™ power-up sequencing. This allows these modules to simultaneously power up with any other downstream non-isolated, Auto- Track compliant module. The PTB78520W module provides two outputs, each regulated to the same voltage. During power up, the voltage at ‘VO Bus’ rises first, allowing this output to provide input power to any downstream non-isolated module. The voltage from ‘VO Seq’ is then allowed to rise simulta- neously, under the control of Auto-Track, along with the outputs from the down- stream modules.


TEXAS INSTRUMENTS SLTS226A handbook - cover page
Brand
Texas Instruments
Category
Power Management
Document type
Datasheet
Language
English
Pages
15
File format
PDF
File size
438 KB
Published
01 August, 2012
Updated
01 October, 2023
MD5 checksum
A7802C8473644AE6BBE3B848BF629EAF

About this manual

The PTB78520W is a wide-input voltage (18 V to 60 V) isolated DC/DC converter rated for 20 A total output current. It features Auto-Track™ power-up sequencing, allowing it to simultaneously power up with downstream non-isolated modules in distributed power architectures.

The module provides two regulated outputs: 'Vo Bus' and 'Vo Seq'. The 'Vo Bus' output rises first during startup to provide a standby source for downstream modules, while the 'Vo Seq' output follows under Auto-Track control. Key features include Smart-Sense remote sensing, over-current protection, output over-voltage protection, and an industry-standard surface-mountable footprint with 1500 VDC isolation.

What's inside

  • Features
  • Description
  • Pin-Out Information
  • Typical Application
  • Ordering Information
  • Pin Descriptions
  • Environmental & Absolute Maximum Ratings
  • Specifications

Specifications

Total Output Current20 A
Efficiency90%
Output Voltage Adjust Range1.8 V to 36 V
Isolation Voltage1500 VDC

Frequently asked questions

What is the maximum total output current?

The converter provides a 20 A total output current.

What is the maximum total output current rating for the PTB78520W?

The module provides a total output current of 20 A.

What is the input voltage range for this converter?

The device operates with an input voltage range from 18 V to 60 V.

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