DB63

DB63 Datasheet

The DB63 is designed to demonstrate the capabilities of the SA57 DC brush motor driver IC. This fully assembled demonstration allows the user to directly control the speed and direction of the motor. An onboard circuit controls the direction and provides four quadrant PWM signals to control the power outputs of the SA57. LEDs provide feedback for motor control status and fault indications. Provisions on the DB63 allow the user to bypass the onboard control circuit and directly interface with the SA57 motor driver. The DB63 demonstrates proper layout techniques for the SA57 high current switching amplifier. The economical construction uses only a two-sided PCB and allows the SA57 to deliver peak currents of over 1kW.

Part	Datasheet
DB63	DB63 (pdf)

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P r o d u c t IInnnnoovvaa t i o n FFr roomm DBD6B633 Demonstration Board for the SA57-IHZ INTRODUCTION The DB63 is designed to demonstrate the capabilities of the SA57 DC brush motor driver IC. This fully assembled demonstration allows the user to directly control the speed and direction of the motor. An onboard circuit controls the direction and provides four quadrant PWM signals to control the power outputs of the SA57. LEDs provide feedback for motor control status and fault indications. Provisions on the DB63 allow the user to bypass the onboard control circuit and directly interface with the SA57 motor driver. The DB63 demonstrates proper layout techniques for the SA57 high current switching amplifier. The economical construction uses only a two-sided PCB and allows the SA57 to deliver peak currents of over 1kW. THERMAL CONSIDERATIONS: The SA57 is available in a surface mount package which can deliver peak power of over 1kW. This presents an obvious and significant thermal challenge. The DB63 offers a compact design which can deliver 17A peak current by using a patent pending mounting technique. Mounting the SA57 in an inverted fashion as shown in Figure 1 reduces the profile height of the assembly and provides a direct interface between the thermal tab of the PowerQuad package outline drawing HQ and the small HS33 heatsink. The DB63 assembly can dissipate 7-9W in still air at 25ºC ambient temperature, depending on the orientation of the heatsink fins. To use the DB63 in higher power applications, use a fan or mount a heatsink with larger thermal mass. Although the SA57 is rated for operation from -25 to +85ºC, the other components on the DB63 are limited to 0 to 70ºC ambient temperature. CIRCUIT OPERATION Figure 1 Mounting Technique The DB63 control circuit receives power via two terminal Patent Pending block connections. The Vs connection supplies power to drive the motor and must be above the under-voltage lock- out threshold of the SA57, approximately 8.3V. The control circuit requires 12V for proper operation a regulator on the DB63 provides the 5V logic supply for the SA57. There are no special considerations for sequencing the two supplies. DB63U Copyright Cirrus Logic, Inc. 2008 All Rights Reserved OCT APEX − DB63UREVA DB63 Product Innova tionFrom Figure 2 User Control Features Figure 2 shows the user control features of the DB63. 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 DB63 will power up with the SA57 disabled. The enable button 3 will toggle the SA57 on and off with the LED 4 illuminating to indicate the en- able status. Direction of the motor is similarly controlled with the button 5 and is indicated by the LED The DB63 monitors the Temperature warning status pin of the SA57. If this pin goes high an LED 7 illuminates and the enable circuit is forced to a disable status. The temperature LED is not latched and may stay illuminated only briefly while the temperature of the SA57 is above 135ºC. The temperature decrease rapidly via the heatsink once the SA57 is disabled. The SA57 current limit feature is set to limit at approxi- mately 15A to provide a demonstration of the full capabili- ties of the SA57. An LED 8 will illuminate if the SA57 cycle-by-cycle current limit circuit engages. The thermal and current limit features are robust, but will not protect the SA57 in all circumstances. The user must consider ORDERING INFORMATION DB63 Demonstration Board includes one populated EVAL69 PCB and one SA57-IHZ sample. DB63U DB63 Product Innova tionFrom 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. DB63U

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P r o d u c t IInnnnoovvaa t i o n FFr roomm

DBD6B633

Demonstration Board for the SA57-IHZ

INTRODUCTION

The DB63 is designed to demonstrate the capabilities of the SA57 DC brush motor driver IC. This fully assembled demonstration allows the user to directly control the speed and direction of the motor. An onboard circuit controls the direction and provides four quadrant PWM signals to control the power outputs of the SA57. LEDs provide feedback for motor control status and fault indications. Provisions on the DB63 allow the user to bypass the onboard control circuit and directly interface with the SA57 motor driver. The DB63 demonstrates proper layout techniques for the SA57 high current switching amplifier. The economical construction uses only a two-sided PCB and allows the SA57 to deliver peak currents of over 1kW.

THERMAL CONSIDERATIONS:

The SA57 is available in a surface mount package which can deliver peak power of over 1kW. This presents an obvious and significant thermal challenge. The DB63 offers a compact design which can deliver 17A peak current by using a patent pending mounting technique. Mounting the SA57 in an inverted fashion as shown in Figure 1 reduces the profile height of the assembly and provides a direct interface between the thermal tab of the PowerQuad package outline drawing HQ and the small HS33 heatsink. The DB63 assembly can dissipate 7-9W in still air at 25ºC ambient temperature, depending on the orientation of the heatsink fins. To use the DB63 in higher power applications, use a fan or mount a heatsink with larger thermal mass. Although the SA57 is rated for operation from -25 to +85ºC, the other components on the DB63 are limited to 0 to 70ºC ambient temperature.

CIRCUIT OPERATION

Figure 1 Mounting Technique

The DB63 control circuit receives power via two terminal Patent Pending
block connections. The Vs connection supplies power to
drive the motor and must be above the under-voltage lock-
out threshold of the SA57, approximately 8.3V. The control
circuit requires 12V for proper operation a regulator on the

DB63 provides the 5V logic supply for the SA57. There are
no special considerations for sequencing the two supplies.

DB63U

Copyright Cirrus Logic, Inc. 2008 All Rights Reserved

OCT APEX − DB63UREVA

DB63

Product Innova tionFrom

Figure 2 User Control Features

Figure 2 shows the user control features of the DB63. 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 DB63 will power up with the

SA57 disabled. The enable button 3 will toggle the SA57
on and off with the LED 4 illuminating to indicate the en-
able status. Direction of the motor is similarly controlled
with the button 5 and is indicated by the LED

The DB63 monitors the Temperature warning status pin
of the SA57. If this pin goes high an LED 7 illuminates
and the enable circuit is forced to a disable status. The
temperature LED is not latched and may stay illuminated only briefly while the temperature of the SA57 is above
135ºC. The temperature decrease rapidly via the heatsink
once the SA57 is disabled.

The SA57 current limit feature is set to limit at approxi-
mately 15A to provide a demonstration of the full capabili-
ties of the SA57. An LED 8 will illuminate if the SA57
cycle-by-cycle current limit circuit engages. The thermal
and current limit features are robust, but will not protect
the SA57 in all circumstances. The user must consider
ORDERING INFORMATION

DB63 Demonstration Board includes one populated EVAL69 PCB and one SA57-IHZ sample.

DB63U

DB63

Product Innova tionFrom

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.

DB63U

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DB63

DB63 Datasheet

Datasheet ID: DB63 523217