L6506 PDF

Two or more devices may be synchronized using the sync pin. In this mode of operation the oscillator in the master chip sets the operating frequency in all chips. The main function of the device is to sense and control the current in each of the load windings. A common on-chip oscillator drives the dual chopper and sets the operating frequency for the pulse width modulated drive.

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Two or more devices may be synchronized using the sync pin. In this mode of operation the oscillator in the master chip sets the operatingfrequencyin all chips. The main functionof the device is to senseand control the currentin each of the load windings.

A commonon-chiposcillatordrives thedual chopper and sets the operatingfrequencyfor the pulse width modulated drive. When the current in the load winding reaches the programmed peak value, the voltage across the sense resistor Rsense is equal to Vref and the corresponding comparator resets its flip-flop interrupting the drive current untilthe next oscillatorpulse occurs.

The peak current in each winding is programmed by selecting the value of the sense resis- tor and Vref. Since separate inputs are provided for each chopper, each of the loads may be programmed independently allowing the device to be used to implement microstepping of the motor. Ground noise problems in multiple configurations can be avoided by synchronizing the oscillators.

Therefore, when evaluating equation 4 the minimum value for R1 of ? Figure 1 : Oscillator Circuit and Waveforms. Figure 2 shows the L used with the L to drive a 2 phasebipolarmotor. TheLmay be used to implement eitherfull step or half step drives. In the case of 2 phase bipolar stepper motor applications, if a half step drive is used, the bridge requires an additional input to disable the power stage during the half step.

If used in conjunction with the L the enable inputs may be used for this purpose. For quad darlington array in 4 phase unipolarmotor applications half step may be implemented using the 4 phase inputs. The L may also be used to implement microstepping of either bipolar or unipolar motors.

However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.

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Circuito Integrado L6506

All the products will packing in anti-staticbag. Ship with ESD antistatic protection. We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet. After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity. Guarantees 1.

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