PMP21953

40-V isolated comparator-based power supply reference design

PMP21953

Design files

Overview

This reference design demonstrates a cost focused approach of an isolated power supplies with low current capability. The design consists of three designs of three different topologies. All three design options are based on a high voltage comparator TLV1805-Q1 which works as a free-running oscillator and a driver. All three are unregulated, and the ouptut voltage directly depends on the input voltage.

Features
  • Automotive voltage input allows direct connection to car battery (Vin_max=40V)
  • Easy customizable for various applications
  • Low BOM cost
  • Tiny PCB area
Output voltage options PMP21953.1 PMP21953.2 PMP21953.3
Vin (Min) (V) 8 8 8
Vin (Max) (V) 36 36 36
Vout (Nom) (V) 7 14 14
Iout (Max) (A) .05 .05 .05
Output Power (W) .35 .7 .7
Isolated/Non-Isolated Isolated Isolated Isolated
Input Type DC DC DC
Topology Other Other Other

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDT109A.PDF (1608 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDRZQ1.PDF (294 K)

Detailed schematic diagram for design layout and components

TIDRZQ2.PDF (55 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRZQ3.PDF (155 K)

Detailed overview of design layout for component placement

TIDRZQ5.ZIP (639 K)

Files used for 3D models or 2D drawings of IC components

TIDCFG8.ZIP (339 K)

Design file that contains information on physical board layer of design PCB

TIDRZQ4.PDF (556 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Comparators

TLV1805-Q1Automotive high volt comparator with push-pull output and shutdown

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Test report 40-V Isolated Comparator-Based Power Supply Reference Design (Rev. A) Jun. 04, 2019

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