AS5403D-HTST datasheet(21/66 Pages) AMSCO

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[v1-06] 2015-Aug-28

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AS5403A/D/E − Built-In Safety

Figure 22:

Diagnostic Functions of the AS5403

Note(s) and/or Footnote(s):

1. Hardware Error output to high impedance (HZ).

2. Algorithm Error PWM at 5%DC and /PWM at 95%DC depending on Diag_High, digital switches in high impedance (HZ), analog

output insight upper or lower failure band depending on Diag_High. All algorithm errors are recoverable.

Monitoring

Error Type

Source

Comments

VDD undervoltage

Hardware-Error (1)

Power management

Recoverable

VDD overvoltage

Hardware-Error (1)

Power management

Recoverable

VREG undervoltage

Hardware-Error (1)

Power management

Recoverable

Oscillator failure

Hardware-Error (1)

CLK management

Not recoverable

Loss of GND

Hardware-Error (1)

Output driver

Loss of VDD

Hardware-Error (1)

Output driver

Output short circuit

Hardware-Error (1)

Output driver

Recoverable after 16

PWM period

PWM/Digital switch readout

failure

Hardware-Error (1)

Output driver

Recoverable after 16

PWM period

Signature failure

Hardware-Error (1)

EEPROM

Not recoverable

Linearization Overflow

Algorithm Error (2)

Digital DSP

Range Warning

Algorithm Error (2)

Digital DSP

Sensitivity Correction Overflow

Algorithm Error (2)

Digital DSP

Normalization Overflow

Algorithm Error (2)

Digital DSP

Magnet Lost

Algorithm Error (2)

Digital DSP

Self Monitoring Error

Hardware-Error (1)

Digital DSP

Not recoverable

PWM synchronization Error

Hardware-Error (1)

PWM Engine

Not recoverable

Built-In Safety

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