LB1950 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LB1950

Three-Phase Brushless Sensorless Motor Driver

SANYO -> Panasonic 

Pin Functions

Pin No.

Symbol

Pin voltage

3

STBY

VCC1 max –

0.2 V min

LB1950V

Equivalent circuit

Function

• The LB1950V is set to a mode in which only the FG

and PG amplifiers operate when this pin is open or set

to a voltage 0.7 V or lower.

• This pin must be set to a voltage 2.0 V or higher in the

motor drive state.

4

BR

VCC1 max –

0.2 V min

• Braking is applied to the motor if a voltage 2.0 V or

higher is applied to this pin.

• This pin must be open or set to a voltage 0.7 V or

lower to set the LB1950V to the motor drive state.

5

FRC

VCC1 max –

0.2 V min

6

VS

0 V to VCC2

7

VCC2

2.7 to 10 V

8

VCC1

2.7 to 6 V

9

CSLP1

10

CSLP2

• Motor forward/reverse switching input

• Low level: forward

(–0.2 to 0.7 V or open)

• High level: reverse

(2 V to VCC1)

• Power supply that provides the motor voltage and

determines the output amplitude.

• This voltage must be lower than VCC2.

Power supply that provides the source side pre-drive

voltage and the coil waveform detection comparator

voltage.

Power supply that provides the voltages other than the

motor voltage, the source side predrive voltage, and the

coil waveform detection comparator voltage.

Connection for the triangular wave generator. The coil

output waveform is made to operate in a soft switching

manner by this triangular wave.

Continued on next page.

No. 5340-4/10

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