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reference designUCC28711 | Demoboard TIDA-00440

Texas Instruments UCC28711 | Demoboard TIDA-00440

Leakage Current Measurement Reference Design for Determining Insulation Resistance

Overview

TopologyFlyback Converter
Input voltage150-800 V
Output 1500 V / 0 A
IC revisionE2

Description

This TI design provides a reference solution to measure Insulation Resistance up to 100MΩ. It has an on-board isolated 500Vdc power supply and an isolated signal conditioning circuit to measure the leakage current. This design is useful to find leakage due to insulation breakdown in transformer and motor windings.

Features

  • Leakage current measurement circuit with option for: Programmable Current Sense Amplifier and Switchable Shunt Resistors
  • Range of measurement: 0 to 100MΩ with accuracy of 5% (Un-calibrated)
  • Test voltage level derived from IEEE 43-2000 ("Recommended Practice for Testing
  • Insulation Resistance of Rotating Machinery")
  • On-board Isolated 500V Power Supply to measure the insulation resistance
  • Provision for Calibration Resistor on board
  • Hardware support for Start-of-Frame Detect allows implement IEEE1588 PTP

Typical applications

  • Variable Speed AC/DC Drives
  • Transformers
  • Industrial Drives
  • Servo Drives
  • Solar Inverters

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
Pins
Type
Mount
L(mm)
H(mm)
G(mm)
IR(A)
Working Voltage(V (AC))
Operating Temperature
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61300211121
SPECWR-PHD Pin Header - Single, 2, Straight
Simu­lation–
Availability
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Downloads7 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
Pins2 
TypeStraight 
MountTHT 
Length5.08 mm
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–
Rated Current3 A
Working Voltage250 V (AC)
Operating Temperature -40 °C up to +105 °C
–Check availability
750342773
SPECTransformer, –, –
Simu­lation
Availability
–
Downloads5 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product series Transformer
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–
MountTHT 
Length15.7 mm
Height23.3 mm
Pin length3.2 mm
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–
Operating Temperature -40 °C up to +125 °C
–Check availability
750342792
SPECTransformer, –, –
Simu­lation
Availability
–
Downloads4 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product series Transformer
–
–
MountTHT 
Length17.96 mm
Height14.3 mm
Pin length3.5 mm
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–
Operating Temperature -40 °C up to +125 °C
–Check availability