KIT34844EPEVME

KIT34844EPEVME Datasheet

KIT34844EPEVME Evaluation Board

Part	Datasheet
KIT34844EPEVME	KIT34844EPEVME (pdf)

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Freescale Semiconductor User’s Guide KIT34844EPEVME Evaluation Board Figure Evaluation Board EVB Table of Contents Freescale Semiconductor, Inc., All rights reserved. Kit Contents / Packing List 1 Kit Contents / Packing List • EVB - KIT34844EPEVME • USB Cable Type A - B • Cable for LED board connection • CD Freescale Semiconductor Important Notice 2 Important Notice Freescale provides the enclosed product s under the following conditions: This evaluation kit is intended for use of ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY. It is provided as a sample IC pre-soldered to a printed circuit board to make it easier to access inputs, outputs, and supply terminals. This EVB may be used with any development system or other source of I/O signals by simply connecting it to the host MCU or computer board via off-the-shelf cables. This EVB is not a Reference Design and is not intended to represent a final design recommendation for any particular application. Final device in an application will be heavily dependent on proper printed circuit board layout and heat sinking design as well as attention to supply filtering, transient suppression, and I/O signal quality. The goods provided may not be complete in terms of required design, marketing, and or manufacturing related protective considerations, including product safety measures typically found in the end product incorporating the goods. Due to the open construction of the product, it is the user's responsibility to take any and all appropriate precautions with regard to electrostatic discharge. In order to minimize risks associated with the customers applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. For any safety concerns, contact Freescale sales and technical support services. Should this evaluation kit not meet the specifications indicated in the kit, it may be returned within 30 days from the date of delivery and will be replaced by a new kit. Freescale reserves the right to make changes without further notice to any products herein. Freescale makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Freescale assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typical”, must be validated for each customer application by customer’s technical experts. Freescale does not convey any license under its patent rights nor the rights of others. Freescale products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Freescale product could create a situation where personal injury or death may occur. Should Buyer purchase or use Freescale products for any such unintended or unauthorized application, Buyer shall indemnify and hold Freescale and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Freescale was negligent regarding the design or manufacture of the part.Freescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. Freescale Semiconductor, Inc. 2008 Freescale Semiconductor EVB Introduction 3 EVB Introduction This EVB shows the functionality of MC34844 set it up under specific operation parameters. MC34844 which is a high efficiency, LED driver for use in backlighting LCD displays from 10” to 20”+ can operate in this demo board from a supply of 24V, the device is capable of driving up to 160 LEDs in 10 parallel strings. The current through these 10 channels is matched to within ±2% and can be programmed via the I2C/SM-bus interface. For evaluation purposes this Demo Board includes a USB to I2C bridge that allows control of the EVB via USB communication through a PC. All these control fuctions are gathered in a friendly GUI Graphical Unit Interface also provided along with the Demo Board. This EVB allows the user to test this device on its three operational modes Master Mode, Slave Mode and Stand Alone Mode by facilitating access to all pins and providing different possible component configuration. EVB operation parameters. Input Voltage Vin = 24 V +/- 10% Expected Output Voltage Vout = around 47V LED Load = 16 Leds x 10 Channels Duty Cycle = All range. Peak Current on all channels = all range up to 50mA OVP = 55V For 16Leds Boost Frequency = 600KHz Master Mode PWM Frequency = From 100Hz to 25KHz Slave Mode PWM Frequency = From 1KHz to 25KHz In Slave Mode some considerations should be taken into accout from 100Hz to 1KHz, please refer to the “Functional Device Operation” Section from the Data Sheet. Since the demo board goes into ‘Default Configuration’ every time it is powered up, the OVP level should be changed to 55V using the Graphical unit interface. This way the device’s performance can be optimized. EVB Features • Bridge that Allows control of the EVB • USB communication through a PC • Four Layer Board • Low Noise Design • Top Layer Placement • USB to I2C Interface Added • Terminal Block and Connector for the 10 LED channels • Terminal Blocks for Input Voltage, Output Voltage, and Control Signals EN, A0SEN, CK, PWM • Jumper Configuration and resitors arrays for signals Adjusting. • Test Holes for SW Currrent Measurements Freescale Semiconductor EVB Introduction MC34844 Features • Input voltage of 7V to 28V • Output Voltage up to 60V, with auto Vout selection • 3.0A integrated boost • Up to 50mA LED current per channel • 90% efficiency DC:DC • 10-channel current mirror with ±2% current matching • I2C/SM-bus interface • 8-bit programmable current DAC • PWM frequency programmable or synchronizable from 100 Hz to 25 KHz • User programmable OVP • LED failure detection and OTP/OCP/UVLO lockout • 32-Ld 5x5x0.8mm TQFN Pb-Free packaging MCU MC9S08JM60 Features - USB & I2C For this EVB it is important to highlight the following MCU features • USB - USB2.0 full-speed 12Mbps device controller with dedicated on-chip USB transceiver, 3.3-V regulator and USBDP pull-up resistor supports control, interrupt, asynchronous, and bulk transfers supports endpoint 0 and up to 6 additional endpoints 5 and 6 can be combined to provide double buffering capability. • I2C - Inter-integrated circuit BUS module to operate at up to 100kbps with maximum BUS loading multi-master operation programmable slave address interrupt-driven byte-by-byte data transfer 10-bit addressing and broadcast modes support. Since the loading on the BUS is not significat for this application, it is then possible reach up to 400kbps. For more information about this MCU please refer to : GUI Description/Features This GUI allows the user to control and program all Registers related to the following Functions • Chip Enable • OVP Voltage • PWM Frequency, Duty Cycle • Channel Enable • Boost Frequency • Clear FAIL • Strobe Mode • Channel Current Program Freescale Semiconductor Required Equipment

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Freescale Semiconductor User’s Guide

KIT34844EPEVME Evaluation Board

Figure Evaluation Board EVB

Table of Contents

Freescale Semiconductor, Inc., All rights reserved.

Kit Contents / Packing List
1 Kit Contents / Packing List
• EVB - KIT34844EPEVME
• USB Cable Type A - B
• Cable for LED board connection
• CD

Freescale Semiconductor

Important Notice
2 Important Notice

Freescale provides the enclosed product s under the following conditions:

This evaluation kit is intended for use of ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY. It is provided as a sample IC pre-soldered to a printed circuit board to make it easier to access inputs, outputs, and supply terminals. This EVB may be used with any development system or other source of I/O signals by simply connecting it to the host MCU or computer board via off-the-shelf cables. This EVB is not a Reference Design and is not intended to represent a final design recommendation for any particular application. Final device in an application will be heavily dependent on proper printed circuit board layout and heat sinking design as well as attention to supply filtering, transient suppression, and I/O signal quality.

The goods provided may not be complete in terms of required design, marketing, and or manufacturing related protective considerations, including product safety measures typically found in the end product incorporating the goods. Due to the open construction of the product, it is the user's responsibility to take any and all appropriate precautions with regard to electrostatic discharge. In order to minimize risks associated with the customers applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. For any safety concerns, contact Freescale sales and technical support services.

Should this evaluation kit not meet the specifications indicated in the kit, it may be returned within 30 days from the date of delivery and will be replaced by a new kit.

Freescale reserves the right to make changes without further notice to any products herein. Freescale makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Freescale assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typical”, must be validated for each customer application by customer’s technical experts.

Freescale does not convey any license under its patent rights nor the rights of others. Freescale products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Freescale product could create a situation where personal injury or death may occur.

Should Buyer purchase or use Freescale products for any such unintended or unauthorized application, Buyer shall indemnify and hold Freescale and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Freescale was negligent regarding the design or manufacture of the part.Freescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. Freescale Semiconductor, Inc. 2008

Freescale Semiconductor

EVB Introduction
3 EVB Introduction

This EVB shows the functionality of MC34844 set it up under specific operation parameters.

MC34844 which is a high efficiency, LED driver for use in backlighting LCD displays from 10” to 20”+ can operate in this demo board from a supply of 24V, the device is capable of driving up to 160 LEDs in 10 parallel strings. The current through these 10 channels is matched to within ±2% and can be programmed via the I2C/SM-bus interface. For evaluation purposes this Demo Board includes a USB to I2C bridge that allows control of the EVB via USB communication through a PC. All these control fuctions are gathered in a friendly GUI Graphical Unit Interface also provided along with the Demo Board.

This EVB allows the user to test this device on its three operational modes Master Mode, Slave Mode and Stand Alone Mode by facilitating access to all pins and providing different possible component configuration.

EVB operation parameters.

Input Voltage Vin = 24 V +/- 10% Expected Output Voltage Vout = around 47V LED Load = 16 Leds x 10 Channels Duty Cycle = All range. Peak Current on all channels = all range up to 50mA OVP = 55V For 16Leds Boost Frequency = 600KHz Master Mode PWM Frequency = From 100Hz to 25KHz Slave Mode PWM Frequency = From 1KHz to 25KHz In Slave Mode some considerations should be taken into accout from 100Hz to 1KHz, please refer to the “Functional Device Operation” Section from the Data Sheet. Since the demo board goes into ‘Default Configuration’ every time it is powered up, the OVP level should be changed to 55V using the Graphical unit interface. This way the device’s performance can be optimized.

EVB Features
• Bridge that Allows control of the EVB
• USB communication through a PC
• Four Layer Board
• Low Noise Design
• Top Layer Placement
• USB to I2C Interface Added
• Terminal Block and Connector for the 10 LED channels
• Terminal Blocks for Input Voltage, Output Voltage, and Control Signals EN, A0SEN, CK, PWM
• Jumper Configuration and resitors arrays for signals Adjusting.
• Test Holes for SW Currrent Measurements

Freescale Semiconductor

EVB Introduction

MC34844 Features
• Input voltage of 7V to 28V
• Output Voltage up to 60V, with auto Vout selection
• 3.0A integrated boost
• Up to 50mA LED current per channel
• 90% efficiency DC:DC
• 10-channel current mirror with ±2% current matching
• I2C/SM-bus interface
• 8-bit programmable current DAC
• PWM frequency programmable or synchronizable from 100 Hz to 25 KHz
• User programmable OVP
• LED failure detection and OTP/OCP/UVLO lockout
• 32-Ld 5x5x0.8mm TQFN Pb-Free packaging

MCU MC9S08JM60 Features - USB & I2C

For this EVB it is important to highlight the following MCU features
• USB - USB2.0 full-speed 12Mbps device controller with dedicated on-chip USB transceiver, 3.3-V
regulator and USBDP pull-up resistor supports control, interrupt, asynchronous, and bulk transfers supports endpoint 0 and up to 6 additional endpoints 5 and 6 can be combined to provide double buffering capability.
• I2C - Inter-integrated circuit BUS module to operate at up to 100kbps with maximum BUS loading multi-master operation programmable slave address interrupt-driven byte-by-byte data transfer 10-bit addressing and broadcast modes support.

Since the loading on the BUS is not significat for this application, it is then possible reach up to 400kbps.

For more information about this MCU please refer to :

GUI Description/Features

This GUI allows the user to control and program all Registers related to the following Functions
• Chip Enable
• OVP Voltage
• PWM Frequency, Duty Cycle
• Channel Enable
• Boost Frequency
• Clear FAIL
• Strobe Mode
• Channel Current Program

Freescale Semiconductor

Required Equipment

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived KIT34844EPEVME Datasheet file may be downloaded here without warranties.

Datasheet ID: KIT34844EPEVME 635428