DB64R APEX PRECISION POWER, DB64R Datasheet - Page 4

• Manufacturer Part Number: DB64R
• Description: 3 Phase Brushless DC Motor Driver Demo Board
• Manufacturer: APEX PRECISION POWER

Specifications of DB64R

• Silicon Manufacturer: Cirrus Logic
• Silicon Core Number: SA306
• Kit Application Type: Power Management - Motor Control
• Application Sub Type: DC Brushless Motor
• Kit Contents: Board Docs

DB64R
capacitors with excellent high frequency characteristics bypass the Vs motor supplies on each phase. Two 150μF
electrolytic capacitors provide a local, low inductance source to accommodate surge currents up to 17A. Six 100V
Schottky diodes conduct the commutation current via low forward voltage paths which reduces the power dissipa-
tion in the SA306. These diodes are rated for 5A continuous and are mounted close to the SA306 to reduce induc-
tance in the commutating current loop. For applications with continuous currents less than 5A, the Schottky diodes
may not be necessary if the higher forward voltage internal body diodes and the associated power dissipation are
manageable during commutation cycles.
Figure 4 shows the top and bottom layouts of the DB64R. Gerber files for the circuit board are available upon re-
quest.
Figure 4 – PCB Layout (not to scale)
4
TOP SIDE
BOTTOM SIDE
3.888”
P r o d u c t I n n o v a t i o n F r o m
DB64RU
1.860”