imt901_en[1].pdf

Drivers

IMT-901 - Microstep Constant Current Driver “IC”

The IMT 901 is a PWM chopper type sinusoidal micro step bipolar stepp-

ping motor driver. Sinusoidal micro step operation is generated by means

of built-in hardware and is outputted for operation by clock signal inputting.

Advantages:

only one IC for power and logic (up to 2,5 A/phase)

reduces considerably space, assembly time and cost of a microstep

driver with a max. functions yet with a min. of ext. components.

selectable from: 1/1-, 1/2-, 1/4-, 1/8-Step

enables individual application-related microstep switching, smooth

and constant running and reduces considerably system resonance.

Current down system or current zeroing

reduces or eliminates motor power losses and heating during stand-

still

Dimensions (mm)

PIN-Assignment

max. Nominal Values (at 25 °C)

Supply voltage V CC :

5,5 V

V M :

40 V

Output current lout:

1,5 A (AVE)

2,5 A (peak)

Power dissipation P d

4 W/40 W

without/with

heat sink

T C =85 °C

Operation temp.:

-40°C to 85°C

Storage temp.:

-55°C to 150°C

Input

Mode

Signal Circuit times

t1: pulse width >10µs

t2: pulse width >10µs

t3: > 5µs

t4: >10µs

mounting form CPP-25

M1 M2

L L 1/1 Step

H L 1/2 Step

L H 1/4 Step

H H 1/8 Step

Inputs

Thermal Behavior

Input-/Output-Signals

Nanotec ® GmbH • Gewerbestr. 11 • D-85652 Landsham • Phone 089/900 686-0 • Fax 089/900 686-50 • http://www.nanotec.com

Drivers

IMT-901

Function Table

Block diagramm (+ external Circuit)

Full-/Half-Step Mode

Quarter-/Eighth-Step Mode

Electrical Characteristics 1 (Ta=25°, V CC =5V, V M =24V)

Electrical Characteristics 2 (Ta=25°, V CC =5V, V M =24V)

Nanotec ® GmbH • Gewerbestr. 11 • D-85652 Landsham • Phone 089/900 686-0 • Fax 089/900 686-50 • http://www.nanotec.com

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