HA13609ANT Datasheet, PDF (18/31 Pages) Hitachi Semiconductor – Three-Phase Brushless Motor Driver

HA13609ANT
Timing in phase control mode
f_MR'
A
A
≈ 3.6 V
Discriminator output
≈0V
ACC
ACC _{A × 4%}
ACC _{A × 4%}
ACC
≈ 3.6 V
PLL output
≈ 1.85 V
≈0V
ACC
Integrator output
ACC
∆Vo
DEC
DEC
Configuration of the speed control block when @MD9 = 1
Speed signal
D1
f_MR’
f_MR
Buffer
amplifier
SPEED CLK
f_CLK
X’tal
D2
f_OSC
CLK counter
Discriminator
counter setting
16
C2
R2
C1
Discriminator Charge
(1024 to 4095) ^pump
R1
19
R1
4Icp
Note: If possible, Tr and Tf for the SPEED CLK signal should be under 20 ns when using this circuit.
18