NXP Semiconductors SAFE ASSURE FRDMGD3100HBIEVM, Руководство пользователя, Страница: 18 / 35

NXP Semiconductors
UM11134
FRDMGD3100HBIEVM half-bridge evaluation board
UM11134 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
User guide Rev. 3 — 10 February 2020
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Table 7. Translator board jumper functionality
Jumper Reference
designator
Position Function
1-2 5.0 V regulator from KL25Z powers all translator VCC,
5.0 V signals to/from the driver board (default)
• Use with 5.0 V GD3100 (MC33GD3100EK)
2-3 3.3 V regulator from KL25Z powers all translator VCC,
3.3 V signals to/from the driver board
• Use with 3.3 V version of GD3100
(MC33GD3100A3EK)
VCCSEL J233
Open Not allowed. There is no power provided to logic
translators, and no signals will be passed to the driver
board.
• Provide external power to J233, pin 2 (max 5.5 V)
to enable communications
Closed PWMH signal from MCU is passed to the driver board
(default)
PWMH J235
Open External signal for PWMH must be provided at EXT_
PWMH (TP11)
Closed PWML signal from MCU is passed to the driver board
(default)
PWML J236
Open External signal for PWML must be provided at EXT_
PWML (TP10)
Table 8. Translator board test point definition
Test point Reference designator Definition
EXT_PWML TP10 PWML signal provided to driver board
EXT_PWMH TP11 PWMH signal provided to driver board
GND TP12 GND connection for translator, also connected to GND on
LV domain of driver board
The translator board in FRDMGD3100HBIEVM supports different configurations for
various application tests. The translator supports PWM from either the KL25Z (see
Section 4.6.1 "Configuring the translator for KL25Z-controlled PWM" ) or from external
source (see Section 4.6.2 "Configuring the translator for external PWM control" ), one of
these implementations will be used in testing. Similarly, based on the GD3100 device
populated, the translator will need to support either 5.0 V logic (see Section 4.6.3
"Configuring the translator for 5.0 V logic operation" ) or 3.3 V logic (see Section 4.6.4
"Configuring the translator for 3.3 V logic operation" ).
4.6.1 Configuring the translator for KL25Z-controlled PWM
By default, the translator is setup to send PWM signals generated on the KL25Z out
to the driver board. These signals pass through the translator and are level-shifted
according to the translator’s own configuration. Test points EXT_PWML (TP10) and
EXT_PWMH (TP11) are available to monitor commanded PWM state.
To configure the translator board for KL25Z-controlled PWM, perform the following:
1. Short PWMH (J235) jumper.
2. Short PWML (J236) jumper.
3. Use SPIGen to apply double-pulse, short-circuit, or PWM waveforms.