Continued from preceding page.

Notes : 1. The torque ripple correction ratio is determined as follows from the Rf voltage waveform.

2. Parameters that are indicated as design target values in the conditions column are not tested.

Truth Table and Control Functions

No. 5975-3/8

LB1999M

Correction ratio =

2

× (V

× (%)

For each Hall logic setting

Ground level

Source

→ Sink

Hall input

FR

U

V

W

1

Phase V

→ Phase W

H

H

L

H

Phase W

→ Phase V

L

2

Phase U

→ Phase W

H

L

L

H

Phase W

→ Phase U

L

3

Phase U

→ Phase V

H

L

H

H

Phase V

→ Phase U

L

4

Phase W

→ Phase V

L

L

H

H

Phase V

→ Phase W

L

5

Phase W

→ Phase U

L

H

H

H

Phase U

→ Phase W

L

6

Phase V

→ Phase U

L

H

L

H

Phase U

→ Phase V

L

Note: In the FR column, “H” refers to a voltage of 2.75 V or higher, and “L” refers

Note: In the Hall input column, “H” refers to the state in the corresponding phase

where the + input is at a potential at least 0.01 V higher than the – input,

and “L” refers to the state where the – input is at a potential at least 0.01 V

higher than the + input.

Note: Since the drive technique adopted is a 180° technique, phases

other than the sink and source phase do not turn off.

Parameter

Symbol

Conditions

Ratings

Unit

min

typ

max

[Saturation]

Saturation prevention circuit lower

The voltages between each OUT and

side voltage setting

0.175

0.25

0.325

V

[Schmitt Amplifier]

Duty ratio

DUTY

48.7

50

51.3

%

Upper side output saturation voltage

Vsatu (SH)

4.8

V

Lower side output saturation voltage

Vsatd (SH)

0.2

V

Hysteresis width

Vhys

32

46

60

mV

TSD operating temperature

T-TSD

170

°C