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NXP Semiconductors
UM11134
FRDMGD3100HBIEVM half-bridge evaluation board
UM11134
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© NXP B.V. 2020. All rights reserved.
User guide
Rev. 3 — 10 February 2020
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Figure 8. Gate drive resistors
4.4.7 LED interrupt indicators
Interrupt LEDs are provided to visually alert the user of a reported fault. The LEDs
are supplied with 3.3 V from the KL25Z, and are driven directly by the INTB pin of the
respective GD3100 device. A 220 Ω resistor is used for current limiting.
•
D14 (INTBH) LED is ON while fault is being reported (INTB low). LED is OFF while no
fault is reported (INTB high).
•
D25 (INTBL) LED is ON while fault is being reported. LED is OFF while no fault is
reported (INTB high).