TMC5062 View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

TMC5062

POWER DRIVER FOR STEPPER MOTORS

Unspecified 

TMC5062 DATASHEET (Rev. 1.10 / 2016-APR-28)

8

0,9

Efficiency with coolStep

0,8

Efficiency with 50% torque reserve

0,7

0,6

0,5

Efficiency

0,4

0,3

0,2

0,1

0

0

50 100 150 200 250 300 350

Velocity [RPM]

Figure 1.2 Energy efficiency with coolStep (example)

1.8 dcStep – Load Dependent Speed Control

dcStep allows the motor to run near its load limit and at its velocity limit without losing a step. If the

mechanical load on the motor increases to the stalling load, the motor automatically decreases

velocity so that it can still drive the load. With this feature, the motor will never stall. In addition to

the increased torque at a lower velocity, dynamic inertia will allow the motor to overcome

mechanical overloads by decelerating. dcStep directly integrates with the ramp generator, so that the

target position will be reached, even if the motor velocity needs to be decreased due to increased

mechanical load. A dynamic range of up to factor 10 or more can be covered by dcStep without any

step loss. By optimizing the motion velocity in high load situations, this feature further enhances

overall system efficiency.

Benefits are:

- Motor does not loose steps in overload conditions

- Application works as fast as possible

- Highest possible acceleration automatically

- Highest energy efficiency at speed limit

- Highest possible motor torque using fullstep drive

- Cheaper motor does the job

1.9 Encoder Interfaces

The TMC5072 provides two encoder interfaces for external incremental encoders. The encoders can be

used for homing of the motion controllers (alternatively to reference switches) and for consistency

checks on-the-fly between encoder position and ramp generator position. A programmable prescaler

allows the adaptation of the encoder resolution to the motor resolution. 32 bit encoder counters are

provided.

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