Self-test Begins

60 Cycles after

Power Up

Initiate a Ground-

Fault Leakage Event

through FT Pin

Was the

Induced Fault

Detected?

Is this the 5

th

Consecutive Fail?

Repeat Self-test

in 180 Cycles

Repeat Self-test

in 60 Cycles

Self-test Passes

Monitor Filter Counter

to Detect the Induced

Fault

Yes

No

Yes

No

Initiate ALARM

Blinking, and Drive

SCR to Open the

Load Switch

Start SCR Self-test

Was the SCR

Operation

Verified?

Yes

No

Is this the 5

th

Consecutive Fail?

Yes

No

12

AFE3010

SBFS042 – JUNE 2020

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Product Folder Links: AFE3010

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Copyright © 2020, Texas Instruments Incorporated

Figure 10. AFE3010 Self-test Sequence

7.4 Device Functional Modes

7.4.1 Pin Configuration

The AFE3010 offers multiple operating modes and pin functions. These modes can be set by the SEL pin per

Table 2.

Table 2. Pin Configuration

SEL

SCR SELF-TEST

ALARM

5 V (Leave floating)

No

Works as ALARM/ LED driver.

2.5 V (Connect 500-KΩ resistor to

GND)

Yes

Works as secondary SCR driver in applications

where ALARM (LED) function is not needed.

0 V (Connect to GND)

Yes

Works as ALARM/ LED driver.