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Texas Instruments UCC28711 | Demoboard TIDA-00440
Leakage Current Measurement Reference Design for Determining Insulation Resistance
Overview
| Topology | Flyback Converter |
| Input voltage | 150-800 V |
| Output 1 | 500 V / 0 A |
| IC revision | E2 |
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
- Solar Inverters
- Transformers
- Industrial Drives
- Servo Drives
- Variable Speed AC/DC Drives
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | VIN | VOut1 (V) | IOut1 (A) | VOut2 (V) | IOut2 (A) | Vaux (V) | fswitch (kHz) | L (µH) | NPRI : NSEC : NAUX | ISAT (A) | VT (V (AC)) | L (mm) | W (mm) | Mount | Size | Pins (Value) (pcs) | Rows | H (mm) | G (mm) | Gender | Type | IR (A) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 750342773 | SPEC | 5 files | Active i| Production is active. Expected lifetime: >10 years. | Transformer | 10 - 20 V (DC) | 6 | 0.4 | 6 | 0.4 | – | 250 | 60 | – | 2.9 | 6000 | 15.7 | 22.1 | THT | EPW15 | – | – | 23.3 | 3.2 | – | – | – | Tray | ||
 | 750342792 | SPEC | 4 files | Active i| Production is active. Expected lifetime: >10 years. | MID-OLTI Offline Flyback Transformers for Texas Instruments | 71 - 601 V (AC) | 250 | 0.025 | 250 | 0.025 | 15 | 70 | 736 | 1:2.88:2.88:0.18 | – | 2500 | 17.96 | 20.3 | THT | EE16/8/5 | – | – | 14.3 | 3.5 | – | – | – | Tray | ||
 | 61300211121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | – | – | – | – | – | 5.08 | – | THT | – | 2 | Single | – | – | Pin Header | Straight | 3 | Bag |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 750342773 | SPEC | |
| 750342792 | SPEC | |
| 61300211121 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | VIN | VOut1 (V) | IOut1 (A) | VOut2 (V) | IOut2 (A) | Vaux (V) | fswitch (kHz) | L (µH) | NPRI : NSEC : NAUX | ISAT (A) | VT (V (AC)) | L (mm) | W (mm) | Mount | Size | Pins (Value) (pcs) | Rows | H (mm) | G (mm) | Gender | Type | IR (A) | Packaging | Samples |
|---|