NXP Semiconductors RDGD31603PSMKEVM, Руководство пользователя, Страница: 32 / 39

NXP Semiconductors
UM11697
RDGD31603PSMKEVM three-phase inverter kit
Problem Evaluation Explanation Corrective action(s)
Check for short-circuit fault
(SC) in STATUS1 register.
SC is a severe fault that
disables PWM. SC fault
cannot be masked.
Clear SC fault to continue.
Consider adjusting SC fault
settings on GD3160:
• Adjust short-circuit
threshold setting
(CONFIG2).
•
Adjust short-circuit filter
setting (CONFIG2).
Check for dead time fault
(DTFLT) in STATUS2
register.
Dead time is enforced, but
fault indicates that PWM
controls signals are in
violation.
Clear DTFLT fault bit
(STATUS2). Check Phase U
PWMALT weak pull-downs
R206 and R57 are in place to
bypass dead time faults.
Consider adjusting dead time
settings on GD3160:
• Change mandatory
PWMdead time setting
(CONFIG5).
•
Mask dead time
fault(MSK2).
PWM output is good, but with
persistent fault reported.
Check for overcurrent (OC)
fault in STATUS1 register.
OC fault latches, but does
not disable PWM. OC fault
cannot be masked.
Clear OC fault bit
(STATUS1). Adjust OC
fault detection settings on
GD3160:
• Adjust overcurrent
threshold setting
(CONFIG1).
• Adjust overcurrent filter
setting (CONFIG1).
PWM or FSSTATE rising
edge has longer delay than
falling edge.
Check translator output
voltage versus GD3160 VDD
voltage.
Low translator output voltage
(compared with correct VDD
at GD3160) causes the high
threshold at the GD3160
pin to be crossed later than
commanded.
Check translator output
voltage selection (J233) is
configured to the same level
as the GD3160 VDD.
Check VCCSEL supply or
translator outputs on the
translator board.
for excessive loading or
supply droop/pulldown.
WDOG_FLT reported on
startup.
Check VSUP and VCC are
powered.
On initialization, watchdog
fault is reported when one
die is powered up before the
other.
Check VSUP and VCC both
have power applied.
Clear WDOG_FLT bit
(STATUS2) to continue.
SPIERR reported on startup. Check KL25Z/translator
connection.
On initialization, SPIERR
can occur when the SPI bus
is open, or when GD3160
IC is powered up before the
translator (which provides
CSB).
Clear SPIERR fault to
continue. Reinitialize power
to GD3160 after translator is
powered (over USB).
Table 7. Troubleshooting
...continued
UM11697 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved.
User manual Rev. 1 — 10 December 2021
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