SBAS734A March 2017  – July 2017 AMC1306E05 , AMC1306E25 , AMC1306M05 , AMC1306M25


  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Power Ratings
    6. 7.6 Insulation Specifications
    7. 7.7 Safety-Related Certifications
    8. 7.8 Safety Limiting Values
    9. 7.9 Electrical Characteristics: AMC1306x05
    10. 7.10Electrical Characteristics: AMC1306x25
    11. 7.11Switching Characteristics
    12. 7.12Insulation Characteristics Curves
    13. 7.13Typical Characteristics
  8. Detailed Description
    1. 8.1Overview
    2. 8.2Functional Block Diagram
    3. 8.3Feature Description
      1. 8.3.1Analog Input
      2. 8.3.2Modulator
      3. 8.3.3Isolation Channel Signal Transmission
      4. 8.3.4Digital Output
      5. 8.3.5Manchester Coding Feature
    4. 8.4Device Functional Modes
      1. 8.4.1Fail-Safe Output
      2. 8.4.2Output Behavior in Case of a Full-Scale Input
  9. Application and Implementation
    1. 9.1Application Information
      1. 9.1.1Digital Filter Usage
    2. 9.2Typical Applications
      1. 9.2.1Frequency Inverter Application
        1. Requirements
        2. Design Procedure
        3. Curve
      2. 9.2.2Isolated Voltage Sensing
        1. Design Requirements
        2. Design Procedure
        3. Curve
      3. 9.2.3Do's and Don'ts
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1Layout Guidelines
    2. 11.2Layout Example
  12. 12Device and Documentation Support
    1. 12.1Device Support
      1. 12.1.1Device Nomenclature
        1. Glossary
    2. 12.2Documentation Support
      1. 12.2.1Related Documentation
    3. 12.3Related Links
    4. 12.4Receiving Notification of Documentation Updates
    5. 12.5Community Resources
    6. 12.6Trademarks
    7. 12.7Electrostatic Discharge Caution
    8. 12.8Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Power Supply Recommendations

In a typical frequency-inverter application, the high-side power supply (AVDD) for the device is directly derived from the floating power supply of the upper gate driver. For lowest system-level cost, a Zener diode can be used to limit the voltage to 5 V or 3.3 V (±10%). Alternatively a low-cost low-drop regulator (LDO), for example the LM317-N, can be used to adjust the supply voltage level and minimize noise on the power-supply node. A low-ESR decoupling capacitor of 0.1 µF is recommended for filtering this power-supply path. Place this capacitor (C2 in Figure 61) as close as possible to the AVDD pin of the AMC1306 for best performance. If better filtering is required, an additional 10-µF capacitor can be used.

The floating ground reference (AGND) is derived from the end of the shunt resistor that is connected to the negative input (AINN) of the device. If a four-pin shunt is used, the device inputs are connected to the inner leads and AGND is connected to one of the outer leads of the shunt.

For decoupling of the digital power supply on the controller side, a 0.1-µF capacitor is recommended to be placed as close to the DVDD pin of the AMC1306 as possible, followed by an additional capacitor in the range of 1 µF to 10 µF.

AMC1306E05 AMC1306E25 AMC1306M05 AMC1306M25 ai_pwr_bas734.gif Figure 61. Decoupling the AMC1306