HA13536F 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HA13536F

Three-Phase Brushless DC Motor Driver IC

Hitachi -> Renesas Electronics 

HA13536F

In the above formulas:

ωO = Time constant of servo loop

fFG = FG frequency in Hz

NO = Motor speed in rpm

J = Motor moment of inertia in kg•cm•s2

KT = Motor torque constant in kg•cm/A

Rnf = Current detection in Ω

Gctl = Control amp gain (see Electrical Characteristics)

Icp = Charge pump output current (see Electrical Characteristics)

2. The current limiter operates according to the following formula:

IOMAX = Vref1

(A)

Rnf

where Vref1 is the current limiter reference voltage (see Electrical Characteristics)

3. The burst time t1 is defined as follows:

t1 ≈ – Ct × Rt1’ × ln (1 – Vth1 (L) / Vreg) (RPM select input low)

t1 ≈ – Ct × Rt1’ × ln (1 – Vth1 (H) / Vreg) (RPM select input high)

where Rt1’ is resistance value inter 3 to 4 pin.

4. Place as close to the IC as possible.

5. Determine C102 and C103 according to the following formulas:

C102 > 200

(µF)

N OP

C103 > 100

(µF)

fFG

where

P = Number of motor poles

6. The index pulse width t2 is determined as follows:

t2 ≈ – Ct × Rt2’ × ln (Vth1 / Vth2)

where Vth2 is the threshold voltage (see Electrical Characteristics).

Rt2’ : Rt1 (max) + Rt2

7. If the circuit is affected by noise, a large capacitance value should be set.

6

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