NXP Semiconductors SAFE ASSURE FRDMGD3162HBIEVM, User Manual, Page: 39 / 43

NXP Semiconductors
UM11729
FRDMGD3162HBIEVM half-bridge evaluation board
Problem Evaluation Explanation Corrective action(s)
Check HV domain is powered
correctly
Related to slow rise time of VCC
supply on HV domain, or failed VREF
regulator
Clear VREFUV bit (STATUS2).
Reset HV domain supply if fault bit
does not clear.
VREFUV reported on startup
Check VCC for undervoltage
condition
Low VCC is visible indirectly through
other HV domain faults
Tune VCC-GNDISO using R37
feedback
Check VEE level on suspect domain. If VEE level is not at desired negative
voltage it could cause excessive VCC
level.
Check Zener diode in power supply
circuit for proper value in setting VEE
level.
Clear VCCOV bit (STATUS1) to
continue.
VCCOV fault reported on startup
Check VCC-GNDISO potential PWM is disabled during a VCC
overvoltage (20 V nom.)
Tune VCC-GNDISO potential to
suitable level with power supply set
resistor (R37).
Clear VCCOV bit (STATUS1) to
continue.
No PWM during short circuit test Check PWMxSEL jumpers Incorrect configuration of PWMALT
pins prevent short-circuit test by
enforcing dead time
For short-circuit test, set PWMLSEL
(J14) and PWMHSEL (J10) to bypass
dead time. See Section 4.4.3 for
details.
Check VSUP/VDD for undervoltage
condition
VDD_UV latches SPI buffer contents,
preventing updated fault reporting.
Check voltage provided at VDD pin
(pin 3).
On each read, compare the address
from the sent command and response
(a difference indicates that the SPI
response is latched due to inactive).
Read multiple addresses to ensure a
good comparison.
Check PS_EN is set to HIGH in
FlexGUI; see Figure 22
VCC/VEE can be enabled/disabled in
software.
Enable VCC/VEE from FlexGUI. See
Section 4.4.3 for details.
Bad SPI data, appears to repeat
previous response
Check VCC for undervoltage Unpowered VCC prevents HV domain
from updating data
Tune VCC-GNDISO using R37
feedback
7 Schematics, board layout, and bill of materials
The board schematics, board layout, and bill of materials are available at http://
www.nxp.com/FRDMGD3162HBIEVM on the Overview tab under Get Started.
8 References
[1] Tool summary page for FRDMGD3162HBIEVM http://www.nxp.com/FRDMGD3162HBIEVM
[2] Product summary page for GD3162 device http://www.nxp.com/GD3162
UM11729 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2022. All rights reserved.
User manual Rev. 1 — 21 February 2022
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