SBFS042 June   2020 AFE3010


  1. Features
  2. Applications
  3. Description
    1.     Device Images
      1.      GFCI Application
  4. Revision History
  5. Pin Configuration and Functions
    1.     Pin Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Powering The AFE3010
      2. 7.3.2 Sensing Amplifier
      3. 7.3.3 Noise Filter
      4. 7.3.4 ALARM (LED) Driver
      5. 7.3.5 Phase Detection
      6. 7.3.6 SCR Control
      7. 7.3.7 Self-Test Function
        1. Periodic Self-Test
        2. Continuous Self-Test
    4. 7.4 Device Functional Modes
      1. 7.4.1 Pin Configuration
      2. 7.4.2 ALARM Modes to Drive LED
  8. Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Manual Self-Test Using PTT Pin
        1. Successful Self-Test
        2. Unsuccessful Self-Test
      2. 8.1.2 ALARM and RESET Function With SW_OPEN
        1. No Self-Test Fail Event
        2. Self-Test Fail Event
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 What to Do and What Not to Do
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

ALARM Modes to Drive LED

The AFE3010 supports three different modes when the ALARM pin is used as an LED driver:

  1. Successful power-up indication: The LED turns on for 250-ms when the first periodic self-test is completed after power up. On a 60-Hz system, this event occurs approximately one second after power up.
  2. LED blinking due to self-test fail: In case of a self-test fail, the ALARM pin sets the LED in blinking mode a frequency of 0.5-Hz. In this state, the LED is on for one second and off for one second. When the ALARM pin goes into blinking mode, a system power recycle or a successful self-test pass through the PTT press will deactivate the ALARM signal.
  3. LED on through the SW_OPEN pin: If the SW_OPEN pin is low, the LED will turn on without 0.5-Hz blinking. During a self-test fail event, the device overrides the SW_OPEN state and puts the LED blinking mode at 0.5 Hz.

Table 3. ALARM (LED) Operating Modes

Self-test fails Floating ALARM (LED) blinks Self-test fail dominates ALARM (LED) behavior and ignores the SW_OPEN signal
Load switch open due to H-G or N-G fault Floating ALARM (LED) remains off
Low ALARM (LED) remains on without blinking
At power up, during the first self-test only Floating ALARM (LED) on for 0.25 s after first self-test pass Indicates the event of first self-test pass after power up
Low ALARM (LED) on without blinking