BUS IC

DC/DC CONVERTER

MOTOR DRIVER IC

RIPPLE COUNTER

48

BLOCK DIAGRAM

DRIVER IC

I/O IC

SENSOR IC

SENSOR INTERFACE IC

49

Note ELMOS Semiconductor AG (below ELMOS) reserves the right to make changes to the product contained in this publication without notice. ELMOS assumes no responsibility for the use of any

circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication

has been checked, no responsibility, however, is assumed for inaccuracies. ELMOS does not recommend the use of any of its products in life support applications where the failure or malfunction of

the product can reasonably be expected to cause failure of a life-support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications.

Copyright © 2005 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited.

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PINNING

PACKAGE

ÿ Sensorless position control of DC-motors, with drivers

coming soon

E910.71

VBAT

µC

VDD

VS

CLK

MISO

MOSI

CS

DCO

DR

PROG

Ctrl.

Int.

supply/

charge

pump

VCP

Ripple Detection 1

Ripple Detection 2

Ripple Detection 3

MUX

6

6

6

6

6

OUT1

OUT2

OUT3

OUT4

OUT5

OUT6

M1

M4

M2

M5

M3

LP1

diag

LP2

LP3

M

M

M

M

M

FEATURES

5 DC Motors

drive other kinds of loads

APPLICATION

US patent 5,203,499 owned by BHTC)

DESCRIPTION

The IC features 6 configurable half bridges to drives up to 3 DC

motors simultaneously or up to 5 motors sequentially. 3 indepen-

dent pulse detection circuits convert the commutation current of

the motors into countable digital signals for positioning especial-

ly of HVAC flap actuators.

Via an SPI a µC sends motor address, direction, and pulse count

command to the device. The corresponding motor will then be

driven to the desired position, and the actual number of counts

is sent back to the µC.

Diagnostic data such as over current, over temperature, and mo-

tor stall is also transmitted via the SPI.

An open drain low side output indicates when a required motor

position is reached or diagnostic data is available.

ICs can be connected in a daisy chain.

Pin Name

Description

1

GND

Ground

2

CSOB

Chip select input/daisy chain out

3

DRB

Data ready flag output, open drain

4

TPIN

Test input, connect to GND

5

TMODE

Test input, connect to GND

6

GND

Ground

7

VDD

5V supply input

8

GND

Ground

9

TEST

Test mode, connect to ground

10

CLP1

Low pass filter capacitor for ripple detection 1

11

CLP2

Low pass filter capacitor for ripple detection 2

12

CLP3

Low pass filter capacitor for ripple detection 3

13

VBAT

Battery supply

14

OUT1

Output half bridge 1

15

PGND

Power ground

16

CCP

External charge pump capacitor

17

GND

Ground

18

OUT2

Output half bridge 2

19

PGND

Power ground

20 OUT3

Output half bridge 3

21

VBAT

Battery supply

22

OUT4

Output half bridge 4

23

PGND

Power ground

24

OUT5

Output half bridge 5

25

GND

Ground

26

VS

Battery supply

27

OUT6

Output half bridge 6

28

PGND

Power ground

29 CLK

Clock input of SPI

30 CSB

Chip select input

31

RxD

Receive data input of SPI

32

TxD

Transmit data output of SPI

GND

VS

OUT6

PGND

CLK

CSB

RxD

TxD

25

26

27

28

29

30

31

32

24 23 22 21 20 19 18 17

1

2

3

4

5

6

7

8

CCP

PGND

OUT1

VBAT

CLP3

CLP2

CLP1

TEST

16

15

14

13

12

11

10

9

AVAILABILITY

Samples

Q4/2005

Series

Q2/2006

Position control

ÿ Position control+driver

Speed control

Ripple detection