HA13563 Datasheet, PDF (7/18 Pages) Hitachi Semiconductor – Three-Phase Brushless Motor Driver

HA13563/V
K_T : Torque constant (N•m/A)
T_L : Rated load torque (N•m)
V_OSC : PWM carrier oscillator amplitude (V_PP, See the Electrical Charasteristics)
V_E : Motor back EMF (V_PP/T–T)
R_NF : Current detection resistor (Ω)
Vref1 : Current limiter reference voltage (See the Electrical Charasteristics)
Vsat : Saturation voltage (See the Electrical Charasteristics)
Set C2 and derive the integration constants from the following formulas.
R4 = ¹
ω_P ⋅ C2
(5)
R2 = ^R4
G_(E)
(6)
C1 =
1
2 ⋅ R2 ⋅ ω_O
(7)
R3 = R2
(8)
Next, determine R1 to match the phase of PLL output.
R1 =
1.89 ⋅ R4
1.6 − 0.33 ⋅ R4 / R2
(9)
When log ω_P/ω_M is greater than 2, a phase advance to compensate for this phenomenon is
required. Use the following formula to set the phase advance:
1
C4 ⋅ R5
<
ω_P
20 ⋅ 2
(10)
DIS OUT
PLL OUT
R1
R5
R2 C1
C4
R4
C2
−
R3 +
Integrating
amplifier
2.8V
Figure 1 Integration Constants
2. The Hall output bias voltage is determined by R101 and R102.
3. The output current is controlled according to the following formula:
Iomax = ^Vref1
R_NF
Where, Vref1 is the current limiter reference voltage. (See the Electrical Charasteristics)
Mount this resistor as close as possible to the IC and use a resistor with a small inductance
component.
4. Connect these components as close to the IC as possible.
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