DB64

DB64 Datasheet


The DB64 is designed to demonstrate the capabilities of the SA306 3 phase brushless DC BLDC motor driver IC. This fully assembled demonstration allows the user to directly control the speed and direction of the motor. An onboard controller decodes HALL Effect sensor inputs for commutation in either direction and provides four quadrant PWM signals to control the power outputs of the SA306. LEDs provide feedback for motor control status and fault indications. Provisions on the DB64 allow the user to bypass the onboard control circuit and directly interface with the SA306 brushless motor driver. The DB64 demonstrates proper layout techniques for the SA306 high current switching amplifier. The economical construction uses only a two-sided PCB and allows the SA306 to deliver peak currents of over 1kW.

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DBD6B644

Demonstration Board for the SA306-IHZ

INTRODUCTION

The DB64 is designed to demonstrate the capabilities of the SA306 3 phase brushless DC BLDC motor driver IC. This fully assembled demonstration allows the user to directly control the speed and direction of the motor. An onboard controller decodes HALL Effect sensor inputs for commutation in either direction and provides four quadrant PWM signals to control the power outputs of the SA306. LEDs provide feedback for motor control status and fault indications. Provisions on the DB64 allow the user to bypass the onboard control circuit and directly interface with the SA306 brushless motor driver. The DB64 demonstrates proper layout techniques for the SA306 high current switching amplifier. The economical construction uses only a two-sided PCB and allows the SA306 to deliver peak currents of over 1kW.

THERMAL CONSIDERATIONS

The SA306 is available in a surface mount package which
can deliver peak power of over 1kW. This presents an obvi-
ous and significant thermal challenge. The DB64 offers a
compact design which can deliver 17A peak current by using
a patent pending mounting technique. Mounting the SA306
in an inverted fashion as shown in Figure 1 reduces the pro-
file height of the assembly and provides a direct interface be-
tween the thermal tab of the PowerQuad package
outline drawing HQ and the small HS33 heatsink. The DB64
assembly can dissipate 7-9W in still air at 25ºC ambient tem-
perature, depending on the orientation of the heatsink fins.

To use the DB64 in higher power applications, use a fan or
mount a heatsink with larger thermal mass. Although the

SA306 is rated for operation from -25 to +85ºC, the other
components on the DB64 are limited to 0 to 70ºC ambient
temperature.

CIRCUIT OPERATION

Figure 1 Mounting Technique

Patent Pending

The DB64 control circuit receives power via two terminal
block connections. The Vs connection supplies power to
drive the motor and must be above the under-voltage lock-
out threshold of the SA306, approximately 8.3V. The control
circuit requires 12V for proper operation a regulator on the

DB64 provides the 5V logic supply for the SA306. There are
no special considerations for sequencing the two supplies.

DB64U

Copyright Cirrus Logic, Inc. 2008 All Rights Reserved

OCT APEX − DB64UREVA

DB64

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Figure 2 User Control Features

Figure 2 shows the user control features of the DB64. The

PWM duty cycle is controlled with the potentiometer 1
in figure The power LED 2 will illuminate when the 12V supply is connected. The DB64 will power up with
ORDERING INFORMATION

DB64 Demonstration Board includes one populated EVAL67 PCB and one SA306-IHZ sample

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DB64

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Contacting Cirrus Logic Support

For all Apex Precision Power product questions and inquiries, call toll free 800-546-2739 in North America. For inquiries via email, please contact International customers can also request support by contacting their local Cirrus Logic Sales Representative. To find the one nearest to you, go to

IMPORTANT NOTICE

Cirrus Logic, Inc. and its subsidiaries "Cirrus" believe that the information contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind express or implied . Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third parties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives consent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other products of Cirrus. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.

CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE “CRITICAL APPLICATIONS” . CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SECURITY DEVICES, LIFE SUPPORT PRODUCTS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER’S RISK AND CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED IN SUCH A MANNER. IF THE CUSTOMER OR CUSTOMER’S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE, TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL LIABILITY, INCLUDING ATTORNEYS’ FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES.

Cirrus Logic, Cirrus, and the Cirrus Logic logo designs, Apex and Apex Precision Power are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners.

DB64U
More datasheets: TD-045 | TD-040 | TD-035 | TD-030 | TD-025 | TD-020 | TD-015 | TD-100 | TD-070 | TD-090


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Datasheet ID: DB64 523218