L6460 datasheet(64/139 Pages) STMICROELECTRONICS

Il numero della parte	L6460

Spiegazioni elettronici	SPI configurable stepper and DC multi motor driver

PDF	139 Pages

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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64 / 139 page

Power bridges

L6460

64/139

Doc ID 17713 Rev 1

side power MOS for the whole off time. In fast decay mode the current is recirculated

through the high and low side power MOS opposite respect to those forcing current to

increase. Mixed decay mode is a selectable mix of the previous two modes (fast decay

followed by slow decay) and allows the user to find the best trade off between load current

ripple and fast current levels transition. Additionally, by setting the

SeqMixedOnlyInDecreasingPh bit in the StpCfg1 register, the user can choose to apply the

fast decay percentage in mixed mode always or only when the current is decreasing (i.e

from 90° to 180° and from 270° to 360° of the sinusoidal wave).

By using SPI interface the user can choose:

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Control type (external firmware control, half step, normal drive, wave drive, micro-step).

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Up to 16 current levels (quasi-sinusoidal increments) for each bridge.

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Current direction.

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Decay mode.

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Blanking time.

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Off time (32 values from 2

µs to 64µs).

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Percentage of fast decay respect to toff (when in mixed decay mode).

L6460 Scheda tecnica(PDF) 64 Page - STMicroelectronics