AS5047D datasheet(21/37 Pages) AMSCO

部件名	AS5047D

功能描述	14-bit On-Axis Magnetic Rotary Position Sensor with 11-bit Decimal

PDF	37 Pages

Scroll/Zoom	100%

制造商	AMSCO [ams AG]

网页	http://www.ams.com

标志

21 / 37 page

ams Datasheet: 2014-Jun-27 [v1-02]

AS5047D – 21

Detaile d Desc rip t ion

UVW Commutation Interface

The AS5047D can emulate the UVW signals generated by the

three discrete Hall switches commonly used in BLDC motors.

The UVWPP field in the SETTINGS register selects the number

of pole pairs of the motor (from 1 to 7 pole pairs). The UVW

signals are generated with 14-bit resolution.

During the start-up time, after power on of the chip, the UVW

signals are low.

Figure 33:

UVW Signals

The Figure 32 shows the UVW signal flow if the magnet rotates

in clockwise direction, placing the magnet on the top of the

AS5047D and looking at the magnet from the top (DIR=1). With

the bit DIR, it is possible to invert the rotation direction.

Electrical

Angle

0°

60°

180°

240°

120°

300°

360°

AS5047D 数据表(PDF) 21 Page - ams AG