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[原创] TI CC2650无线连接100W可调光LED驱动器参考设计

关键词:ARM Cortex-M3 MCU 蓝牙 ZigBee 6LoWPAN ZigBee RF4CE LED驱动器

时间:2016-09-08 11:52:38       来源:中电网

TI公司的CC2650是SimpleLink多标准2.4GHz超低功耗无线MCU,包括工作在48MHz的32位ARM Cortex-M3处理器以及丰富外设和独特的超低功率传感器控制器,主要用在蓝牙,ZigBee, 6LoWPAN和ZigBee RF4CE遥控应用.本文介绍了CC2650主要特性,框图,差分和单端应用电路,以及100W DC/DC LED驱动器参考设计TIDA-01095主要特性和指标,电路图,材料清单和PCB设计图.

The CC2650 device is a wireless MCU targeting Bluetooth, ZigBee® and 6LoWPAN, and ZigBee RF4CEremote control applications.

The device is a member of the CC26xx family of cost-effective, ultralow power, 2.4-GHz RF devices. Verylow active RF and MCU current and low-power mode current consumption provide excellent batterylifetime and allow for operation on small coin cell batteries and in energy-harvesting applications.

The CC2650 device contains a 32-bit ARM Cortex-M3 processor that runs at 48 MHz as the mainprocessor and a rich peripheral feature set that includes a unique ultralow power sensor controller. Thissensor controller is ideal for interfacing external sensors and for collecting analog and digital dataautonomously while the rest of the system is in sleep mode. Thus, the CC2650 device is ideal forapplications within a whole range of products including industrial, consumer electronics, and medical.

The Bluetooth Low Energy controller and the IEEE 802.15.4 MAC are embedded into ROM and are partlyrunning on a separate ARM Cortex-M0 processor. This architecture improves overall system performanceand power consumption and frees up flash memory for the pplication.

CC2650主要特性:1

• Microcontroller
– Powerful ARM® Cortex®-M3
– EEMBC CoreMark® Score: 142
– Up to 48-MHz Clock Speed
– 128KB of In-System Programmable Flash
– 8KB of SRAM for Cache
– 20KB of Ultralow-Leakage SRAM
– 2-Pin cJTAG and JTAG Debugging
– Supports Over-The-Air Upgrade (OTA)
• Ultralow-Power Sensor Controller
– Can Run Autonomous From the Rest of theSystem
– 16-Bit Architecture
– 2KB of Ultralow-Leakage SRAM for Code andData
• Efficient Code Size Architecture, Placing Drivers,Bluetooth® Low Energy Controller, IEEE 802.15.4MAC, and Bootloader in ROM
• RoHS-Compliant Packages
– 4-mm × 4-mm RSM VQFN32 (10 GPIOs)
– 5-mm × 5-mm RHB VQFN32 (15 GPIOs)
– 7-mm × 7-mm RGZ VQFN48 (31 GPIOs)
• Peripherals
– All Digital Peripheral Pins Can Be Routed toAny GPIO
– Four General-Purpose Timer Modules(Eight 16-Bit or Four 32-Bit Timers, PWM Each)
– 12-Bit ADC, 200-ksamples/s, 8-Channel AnalogMUX
– Continuous Time Comparator
– Ultralow-Power Analog Comparator
– Programmable Current Source
– UART
– 2× SSI (SPI, MICROWIRE, TI)
– I2C
– I2S
– Real-Time Clock (RTC)
– AES-128 Security Module
– True Random Number Generator (TRNG)
– 10, 15, or 31 GPIOs, Depending on PackageOption
– Support for Eight Capacitive-Sensing Buttons
– Integrated Temperature Sensor
• External System
– On-Chip internal DC-DC Converter
– Very Few External Components
– Seamless Integration With the SimpleLink™CC2590 and CC2592 Range Extenders
– Pin Compatible With the SimpleLink CC13xx in4-mm × 4-mm and 5-mm × 5-mm VQFN
Packages
• Low Power
– Wide Supply Voltage Range
• Normal Operation: 1.8 to 3.8 V
• External Regulator Mode: 1.7 to 1.95 V
– Active-Mode RX: 5.9 mA
– Active-Mode TX at 0 dBm: 6.1 mA
– Active-Mode TX at +5 dBm: 9.1 mA
– Active-Mode MCU: 61 μA/MHz
– Active-Mode MCU: 48.5 CoreMark/mA
– Active-Mode Sensor Controller: 8.2 μA/MHz
– Standby: 1 μA (RTC Running and RAM/CPURetention)
– Shutdown: 100 nA (Wake Up on ExternalEvents)
• RF Section
– 2.4-GHz RF Transceiver Compatible WithBluetooth Low Energy (BLE) 4.2 Specification
and IEEE 802.15.4 PHY and MAC
– Excellent Receiver Sensitivity (–97 dBm for BLEand –100 dBm for 802.15.4), Selectivity, andBlocking Performance
– Link budget of 102 dB/105 dB (BLE/802.15.4)
– Programmable Output Power up to +5 dBm
– Single-Ended or Differential RF Interface
– Suitable for Systems Targeting Compliance WithWorldwide Radio frequency Regulations
• ETSI EN 300 328 (Europe)
• EN 300 440 Class 2 (Europe)
• FCC CFR47 Part 15 (US)
• ARIB STD-T66 (Japan)
• Tools and Development Environment
– Full-Feature and Low-Cost Development Kits
– Multiple Reference Designs for Different RFConfigurations
– Packet Sniffer PC Software
– Sensor Controller Studio
– SmartRF™ Studio
– SmartRF Flash Programmer 2
– IAR Embedded Workbench® for ARM
– Code Composer Studio™

CC2650应用:

• Consumer Electronics
• Mobile Phone Accessories
• Sports and Fitness Equipment
• HID Applications
• Home and Building Automation
• Lighting Control
• Alarm and Security
• Electronic Shelf Labeling
• Proximity Tags
• Medical
• Remote Controls
• Wireless Sensor Networks

图1.CC2650框图

图2.CC2650 5x5外接差分(5XD)应用电路图

图3.CC26504x4外接单端(4XS)应用电路图

100W DC/DC LED驱动器参考设计TIDA-01095

The TIDA-01095 TI design is a tested DC-DC LED driver subsystem for high power, high efficiency dimmable LED luminaires. It is built-on a wireless SoC platform which can enable intensity adjustment through analog, PWM dimming and control using any BLE smart device or ZiBee. High Bay and Low bay LED lighting luminaires are replacing the fluorescent and HID lights as they cut energy consumption in half and nearly eliminate maintenance costs. Daylight harvesting using the dimming feature combined with ambient light sensor, can provide up-to additional 50% energy savings depending on the application. TI design TIDA-01095 provides high efficiency DC-DC conversion, allows dimming, daylight harvesting and enables wireless connected lighting control.

The TIDA-01095 platform uses TPS92641, a synchronous buck controller for a precision dimming LEDdrive. The controller requires two external MOSFETs that must be sized based on the powerrequirements. The TPS92641 is designed for high-speed capability, including an oscillator frequencyrange of up to 1 MHz. The dead time between high-side and low-side gate drivers is optimized to providevery high efficiency over a wide input operating voltage and output power range. The TPS92641 deviceaccepts both analog and pulse width modulation (PWM) input signals, resulting in exceptional dimmingcontrol range. Linear response characteristics between the input command and LED current is achievedwith true zero LED current, using a low off-set error amplifier and proprietary PWM dimming logic. Fordimming control and wireless connectivity, the SimpleLink™ technology, multi-standard, 2.4-GHz ultralow-power wireless MCU CC2650 is used. Besides 2.4-Ghz RF connectivity, the built-in peripherals suchas an analog-to-digital converter (ADC) and PWMs are useful in this lighting application.

The SimpleLinkCC2650 Wireless MCU LaunchPad™ kit generates one PWM for the PWM dimming and another PWM,followed by a four-stage low-pass filter and low-offset operational amplifier (op amp) as a buffer-generatedvariable voltage as IADJ, to enable analog dimming. Dimming through IADJ is more efficient and producesless electromagnetic interference (EMI). However, at very low currents, there is slight variation in the color temperature of the LEDs, which may not be desirable. The PWM dimming method avoids this issue andallows higher resolution dimming. However, both dimming methods can be combined through software toachieve both high efficiency and wider dimming resolution.

The OPT3001 Digital Ambient Light Sensor (ALS) with high-precision human eye response is interfacedwith the CC2650 MCU and thus features, such as constant lumen output and daylight energy harvestingby automatic dimming of LEDs with the presence of sun light, can easily be implemented in the software.

The CC2650 SimpleLink multi-standard, 2.4-GHz ultra-low-power wireless MCU lets the user implementany of the various radio frequency (RF) connectivity standards, such as Bluetooth Smart, ZigBee,6LoWPAN, and ZigBee RF4CE for remote control applications. The LMT84 1.5 V-capable, 10-μA analogoutput temperature sensor in the TO-92 package allows the user to measure the temperature of the LEDheatsink, which enables automatic foldback dimming in the case of overtemperature, and enables LEDstring or LED COB protection.

100W DC/DC LED驱动器参考设计TIDA-01095主要特性:

100W synchronous buck LED driver with average of 97.3% efficiency over 100% to 50% brightness with analog dimming
1:500 contrast ratio with analog dimming and 1:5000 with PWM dimming
Ambient light sensor OPT3001 based light measurement enabling daylight harvesting and constant lumen implementations in software
Overcurrent and over temperature protection for driver and LED module
CC2650 platform enables connected lighting with Bluetooth Smart or ZigBee

100W DC/DC LED驱动器参考设计TIDA-01095应用:

• Indoor LED Lighting (Industrial High-Bay, Low-BayLighting)
• Outdoor LED Lighting (Area Light, Street Light)
• Distributed DC Lighting

图4.100W DC/DC LED驱动器参考设计TIDA-01095外形图
100W DC/DC LED驱动器参考设计TIDA-01095主要指标:


图5.参考设计TIDA-01095框图

图6.参考设计TIDA-01095电路图
参考设计TIDA-01095材料清单:


图7.参考设计TIDA-01095 PCB设计图(1)

图8.参考设计TIDA-01095 PCB设计图(2)

图9.参考设计TIDA-01095 PCB设计图(3)

图10.参考设计TIDA-01095 PCB设计图(4)

图11.参考设计TIDA-01095 PCB设计图(5)

图12.参考设计TIDA-01095 PCB设计图(6)

图13.参考设计TIDA-01095 PCB设计图(7)

图14.参考设计TIDA-01095 PCB设计图(8)

图15.参考设计TIDA-01095 PCB设计图(9)
详情请见:
http://www.ti.com/lit/ds/symlink/cc2650.pdf
http://www.ti.com/lit/ug/tidubw2a/tidubw2a.pdf
以及http://www.ti.com/lit/df/tidrmd9/tidrmd9.pdf
http://www.ti.com/lit/df/tidrme0/tidrme0.pdf
http://www.ti.com/lit/df/tidrme2/tidrme2.pdf
cc2650.pdf
tidrmd9.pdf
tidrme0.pdf
tidrme2.pdf
tidubw2a.pdf

 

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