NXP公司的TDA5051A是用于ASK傳輸的調制解調器,數據速率600波特或1200波特,單電源5V工作,和EN50065-1兼容,主要用在家用電器控制如空調,照明,告警等,能量/熱量控制以及采用家庭動力線網絡的ASK數據傳輸.本文介紹了TDA5051A主要特性和優勢,方框圖,動力線絕緣和不絕緣的應用電路,以及光主從控制板主要特性,方框圖和電路圖.
The TDA5051A is a modem IC, specifically dedicated to ASK transmission by means of the home power supply network, at 600 baud or 1200 baud data rate. It operates from a single 5 V supply.
TDA5051A主要特性和優勢:
Full digital carrier generation and shaping
Modulation/demodulation frequency set by clock adjustment, from microcontroller or on-chip oscillator
High clock rate of 6-bit D/A (Digital to Analog) converter for rejection of aliasing components
Fully integrated output power stage with overload protection
Automatic Gain Control (AGC) at receiver input
8-bit A/D (Analog to Digital) converter and narrow digital filtering
Digital demodulation delivering baseband data
Easy compliance with EN50065-1 with simple coupling network
Few external components for low cost applications
SO16 plastic package
TDA5051A應用:
Home appliance control (air conditioning, shutters, lighting, alarms and so on)
Energy/heating control
Amplitude Shift Keying (ASK) data transmission using the home power network
圖1.TDA5051A方框圖
圖2.動力線不絕緣的TDA5051A應用電路,提高靈敏度(典型68 BμV)
圖3.動力線絕緣的TDA5051A應用電路,提高靈敏度(典型68 BμV)
TDA5051A 光主從控制板
The TDA5051A lighting control demo consists of a master controller and a slave lighting controller. The master controller uses the High-Bay board, which consists of the LPC1114 microcontroller, the TDA5051A PLM IC, and power management circuitry. An AC-DC converter is used to provide +13 V DC supply voltage. The master employs 4 xPCF8883 capacitive proximity switches to provide On/Off, Dim Up, Dim Down, and Select outputs of the remote lighting slave controller. The slave controller consists of the High-Bay board, an AC-DC converter to provide +13 V supply voltage, and an LED array. Both the master and the slave are housed in a plastic box with 110 V AC power cords.
The TDA5051A lighting demo board is designed to let customers evaluate the TDA5051A in a realistic application. The demo board includes a the TDA5051A, an LPC1114 microcontroller, a PCA9632 I2C-bus to PWM converter, and software containing some pre-defined functions to brighten and dim the four available LED outputs from the PCA9632. The parameters used by these functions can be easily changed by changing a configuration header file with parameter values used by the pre-defined functions. To further customize the application, the driver functions used in the demo firmware can be easily modified.
圖4.TDA5051A 光主從控制板外形圖:上圖:主控制板;下圖:從控制板
圖5.主控制板框圖
圖6.從控制板框圖
圖7.連接AC線和開關到主控制板
圖8.連接AC線和LED到從控制板
圖9.TDA5051A光控制板電路圖
圖10.4xPCF8883容性接近傳感器開關電路圖
詳情請見:
http://www.nxp.com/documents/data_sheet/TDA5051A.pdf
和
http://www.nxp.com/documents/user_manual/UM10495.pdf
