AS5047U-HTST datasheet(32/51 Pages) AMSCO

Part #	AS5047U-HTST

Description	14-Bit On-Axis Magnetic Rotary Position Sensor with Up to 14-Bit Binary Incremental Pulse Count

PDF	51 Pages

Scroll/Zoom	100%

Manufacturer	AMSCO [ams AG]

Direct Link	http://www.ams.com

Logo

32 / 51 page

Page 32

ams Datasheet

Document Feedback

[v1-00] 2018-Oct-30

AS5047U − Detailed Description

UVW Commutation Interface

The AS5047U can emulate the UVW signals generated by the

three discrete Hall switches commonly used in BLDC motors.

The UVWPP field in the SETTINGS3 register selects the number

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

signals are generated based on14-bit core resolution.

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

signals are low.

Figure 51:

UVW Signals

The Figure 51 shows the UVW signal flow if the magnet rotates

in clockwise direction and counter-clockwise direction (DIR=0).

The rotation direction of the magnet is defined as clockwise

(DIR=0) when the view is from the topside of AS5047U. With the

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

180°

240°

300°

360°

120°

60°

0°

angle

Clockwise rotation

Counter-clockwise rotation

180°

240°

300°

360°

120°

60°

0°

AS5047U-HTST Datasheet(PDF) 32 Page - ams AG