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Fabricante

HA13609ANT

Three-Phase Brushless Motor Driver

Hitachi -> Renesas Electronics 

HA13609ANT

Set C3 and derive the integration constants from following formulas.

R6 = 0 Ω

R3 = 1

ωP · C3

R5 = R3

G(E)

C4 =

1

2 · R5 · ωo

R7 = R5

Next, determine R4 to match the phase of PLL OUT.

R4 =

(3.46 – VP) R3

(VP – 1.2) – (1.9 – VP) · R3 / R5

Here, VP : See the electrical characteristics.

When log ωP/ωM is greater than 2, a phase advance to compensate for this phenomenon is

required. Use the following formula to set the phase advance;

C5

·

R8

>

20 · 2

ωP

R4

DIS

R6 R7

R8

PLL

C4

R5

C5

4. The following formulas determine the stuck rotor protect detection time tLP (detects the current

limiter operating time), the output off time tOFF, and the setup time tset. The figures show the

operating waveforms.

tLP =

∆V1

Isink

· C105 ≈ 0.09 × 106 · C105

tOFF =

∆V2

Isource

· C105 ≈ 0.32 × 106 · C105

tset =

VLH2

Is

· C105 ≈ 0.0005 × 106 · C105

[sec]

[sec]

[sec]

See the electrical characteristics for the definitions of ∆V1, ∆V2, Isink, Isource, and Is.

Standby

(MD0k to 2 = Low)

Enable

Current limiter

operation

IRNF

0

Lock

protect

pin

VLH1

VLH2

VLL

tLP

tOFF

∆V1 ∆V2

tLP

0

tset

Output off

Note that a capacitor with a leakage current sufficiently smaller that Isource must be used for

C105.

16

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