A3951SW DATASHEET PDF

ASW Datasheet PDF Download -, ASW data sheet. Data Sheet. † inductive loads, the ASB and ASW are capable of continuous The ASW, for higher package power dissipation. ASW Dmos Full-bridge PWM Motor Driver NC REF/BRAKE RC GROUND LOGIC SUPPLY PHASE Details, datasheet, quote on part number: ASW.

Author: Kazitilar Diramar
Country: Cyprus
Language: English (Spanish)
Genre: Medical
Published (Last): 6 June 2013
Pages: 21
PDF File Size: 18.54 Mb
ePub File Size: 11.88 Mb
ISBN: 319-6-17532-577-6
Downloads: 56188
Price: Free* [*Free Regsitration Required]
Uploader: Vole

The one shot time, toff fixed off timeis determined by the selection of an external resistor RT and capacitor CT connected in parallel from the RC terminal to ground.

Internal fixed off-time PWM current-control circuitry can be used to regulate the maximum load current to a desired value. Special power-up sequencing is not required. The use of sockets should be avoided as contact resistance can cause variations in the effective value of RS. I Internal Transient Suppression Diodes. The ASW, for higher package power dissipation requirements, is supplied in a pin single in-line power-tab package. These conditions can be tolerated but. Under any set of conditions, do not.

R/tda+ datasheet & applicatoin notes – Datasheet Archive

The ASW, for higher package power a3951s requirements, is supplied in a pin single in-line power-tab package. MP in Dimensions in Millimeters for reference only In some instances, the competitive device is obsolete; in many instances, the suggested Allegro device features improved performance or specifications. Because the kinetic energy stored in the motor and load inertia is being converted into current, which charges the VBB supply bulk capacitance power supply output and decoupling capacitancecare datashwet be taken to ensure the capacitance is sufficient to absorb the energy without exceeding the voltage rating of any devices connected to the motor supply.

  BRK SL177 PDF

A user-selectable blanking window prevents false triggering of the PWM current control circuitry. Commercial part number is shown for reference only. The ASW, for higher package power dissipation. Datasheet magicolor en 4 Documents.

Unity document suite datasheet 4 Documents. This value ensures that the blanking time is sufficient to avoid false trips of the comparator under normal operating conditions. If so, the PWM cycle will repeat, limiting the load current to the desired value.

In internal PWM applications, only the two top-side flyback diodes need be added. When the device is enabled, the internal current-control circuitry will be active and can be used to limit the load current in the normal internal PWM slow-decay or two-quadrant mode of operation. An internally generated dead time prevents crossover currents that can occur when switching phase or braking.

I 50 V Output Voltage Rating. The lead configuration enables. However, Allegro MicroSystems, Inc. This is useful in applications with differing run and brake currents and no practical method of varying VREF. Datasheet pagepro en 4 Documents. However, if the back-EMF voltage is large and there is no PWM current limiting, then the load current can increase to a value that approaches a locked rotor condition.

  CARSON DAZZLER PDF

This is intended only to protect the device from failures due to excessive junction temperatures and should not imply that output short circuits are permitted.

The current generated will depend on the mode of operation. An internal under-voltage lockout circuit prevents simultaneous conduction of the outputs when the datasheeg is powered up or powered down.

A3951 Datasheet PDF

The comparator output remains blanked until the voltage on CT reaches approximately 3. Negative current is defined as coming out of sourcing the specified device terminal.

This simplifies the servo-control loop because the transfer function between the duty cycle on the PHASE input and the average voltage dwtasheet to the motor is more linear than in the case of ENABLE PWM control which produces a discontinuous current at ddatasheet levels. I Default Brake Current Limit.

Designed for bidirectional pulse-width modulated current control of. Internal circuit protection includes thermal shutdown with hysteresis, transient suppression diodes, and crossover-current protection.