PMP8688 Reference Design

Texas Instruments

Small Automotive High Input Voltage 3W Isolated Flyback: 50V…600Vin to 15V@200mA Reference Design


This simple isolated flyback converts 50V…600Vin to 15V@200mA. The LM5021-1 controller is suitable for green mode converters due to pulse skip mode. Since the input maximum voltage is 600V: the pulse skip mode improves the efficiency due to the reduction of the switching losses.

  • Wide Vin capability (50 to 600V DC)Duty cycle restriction to 80%84% full load efficiencyLess than 70mW consumed at no loadPulse skipping mode resulting in reduction of switching lossesLow component count (as there is no need for external slope compensation) with LM5021-1
  • Flow transmitter
  • Pressure transmitter
  • Temperature transmitter
  • Process Analytics (pH
  • Gas
  • Concentration
  • Force & Humidity)
  • Level transmitter
  • Position sensor
Product Categories
  • Power management


Part Number Name Companion Part
LM5021 LM5021 Buy Datasheet

Bill Of Materials

Download the bill of materials for PMP8688 Download


Quickly understand overall system functionality.

Download the schematic for PMP8688

Design File

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

Download the design file for PMP8688

Test Data

Get results faster with test and simulation data that's been verified.

Download the test file for PMP8688

Other Documents

Title Updated Type Size (KB)
PMP8688 Gerber 09 Dec 2014 ZIP 47
PMP8688 BOM 18 Apr 2014 PDF 36
PMP8688 Schematic 18 Apr 2014 PDF 177