Texas Instruments Three Phase BLDC, PMSM Motor Kit with DRV8301, Encoder and RM46 Safety MCU DRV8301-RM46-KIT DRV8301-RM46-KIT 데이터 시트
제품 코드
DRV8301-RM46-KIT
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SLOS719B – AUGUST 2011 – REVISED AUGUST 2013
PCB LAYOUT RECOMMENDATIONS
Below are a few layout recommendations to utilize when designing a PCB for the DRV8301/2.
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1. The DRV8301/2 makes an electrical connection to GND through the PowerPAD. Always check to ensure that
the PowerPAD has been properly soldered (See PowerPAD application report,
).
2. C1/C2/C8/C9, PVDD decoupling capacitors should be placed close to their corresponding pins with a low
impedance path to device GND (PowerPAD).
3. C4, GVDD capacitor should be placed close its corresponding pin with a low impedance path to device GND
(PowerPAD).
4. C16/C17, AVDD & DVDD capacitors should be placed close to their corresponding pins with a low
impedance path to the AGND pin. It’s preferable to make this connection on the same layer.
5. AGND should be tied to device GND (PowerPAD) through a low impedance trace/copper fill.
6. Add stitching vias to reduce the impedance of the GND path from the top to bottom side.
7. Try to clear the space around and underneath the DRV8301/2 to allow for better heat spreading from the
PowerPAD.
Table 10. Recommended Values
DESIGNATOR
PIN
RECOMMENDED VALUE
DESCRIPTION
C1
PVDD1 – pin 29
2.2uF
CAP CER 2.2UF 100V 10% X7R
C2
PVDD1 – pin 29
0.1uF
CAP CER 0.1UF 100V 10% X7R
C8
PVDD2 – pins 53 & 54
2.2uF
CAP CER 2.2UF 100V 10% X7R
C9
PVDD2 – pins 53 & 54
0.1uF
CAP CER 0.1UF 100V 10% X7R
C4
GVDD – pin 13
2.2uF
CAP CER 2.2UF 25V 10% X7R
C16
AVDD – pin 27
1.0uF
CAP CER 1UF 25V 10% X7R
C17
DVDD – pin 23
1.0uF
CAP CER 1UF 25V 10% X7R
Copyright © 2011–2013, Texas Instruments Incorporated
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