ATA6834-DK Atmel, ATA6834-DK Datasheet - Page 7

• Manufacturer Part Number: ATA6834-DK
• Description: BOARD BLDC MOTOR CTRL ATA6833/34
• Manufacturer: Atmel
• Type: MOSFET & Power Driverr

Specifications of ATA6834-DK

• Main Purpose: Power Management, Motor Control
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: ATA6833 / ATA6834, ATmega32M1
• Primary Attributes: 3-Ph BLDC, IC with FET Driver, LIN Transceiver, Volt Regulator, Watchdog
• Secondary Attributes: LCD with Touch Screen on MCU Controller Board
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 4-1.
9143C–AUTO–03/10
C
VCC
Ground Area Connections: Reference Point is ATA6833 Die Pad
Power Ground
Digital Ground Plane
VMODE
/RESET
IH1-3
IL1-3
VCC
DG1
DG2
DG3
EN1
WD
RX
TX
The charge pump shuffle capacitors should be connected in a short loop. The VG capacitor
should be connected in a short loop to the ground reference point. The reservoir capacitor at
CPOUT can be connected to PBAT to reduce maximum voltage at the capacitor. Therefore,
electrical voltage rating up to 25V is sufficient.
Due to the high gate charge peak currents, the loops for the high-side and low-side MOSFET
gate drives should be as short as possible. The source lines are also part of these loops. On
the high side, there are the three sense pins Sx. For the low side, this is the common ground
pin, which should be connected close to the three source pins of the external low side
MOSFETs.
BLDC Motor Control Kit with ATA6833/ATA6834
+
C
VINT
ATA6833
Die Pad
C
R
VG
WD
C
CP1
R
CC
C
CP2
C
CC
C
CPOUT
H3
H2
H1
S1
S2
S3
L1
L2
L3
Power Ground Plane
7