SBASAQ0A March   2023  – December 2024 AMC23C15-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information 
    5. 5.5  Power Ratings
    6. 5.6  Insulation Specifications (Reinforced Isolation)
    7. 5.7  Safety-Related Certifications 
    8. 5.8  Safety Limiting Values 
    9. 5.9  Electrical Characteristics 
    10. 5.10 Switching Characteristics 
    11. 5.11 Timing Diagrams
    12. 5.12 Insulation Characteristics Curves
    13. 5.13 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Analog Input
      2. 6.3.2 Reference Input
      3. 6.3.3 Isolation Channel Signal Transmission
      4. 6.3.4 Open-Drain Digital Outputs
      5. 6.3.5 Power-Up and Power-Down Behavior
      6. 6.3.6 VDD1 Brownout and Power-Loss Behavior
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Overcurrent and Short-Circuit Current Detection
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
      2. 7.2.2 Application Curves
    3. 7.3 Best Design Practices
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.3 Best Design Practices

Keep the connection between the low-side of the sense resistor and the GND1 pin of the AMC23C15-Q1 short and low impedance. Any voltage drop in the ground line adds error to the voltage sensed at the input of the comparator and leads to inaccuracies in the trip thresholds.

For best common-mode transient immunity, place the filter capacitor C5 as closely to the REF pin as possible as illustrated in Figure 7-8. Use a low-value pullup resistor (<10kΩ) on the open-drain output, as explained in the Open-Drain Digital Outputs section, to minimize the effect of capacitive coupling on the open-drain signal line during a common-mode transient event.

Do not exceed the 300mV VREF limit specified in the Recommended Operating Conditions table for bidirectional current-sensing applications. Do not operate the device with the REF pin biased close to the VMSEL threshold (450mV to the 600mV range) to avoid dynamic switching of the Cmp0 hysteresis as explained in the Reference Input section.

The AMC23C15-Q1 provides a limited 200μs blanking time (tHS,BLK) to allow the reference voltage (VREF) to settle during start-up. For many applications, the reference voltage takes longer to settle than the 200μs blanking time and the output of the comparator can possibly glitch during system start-up as described in Figure 6-2. Consider the reference voltage settling time in the overall system start-up design.