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    System Power

    Digital dimming power supply case

    This scheme adopts pl51wt003 chip, which integrates 16kb flash, 256byte true EEPROM, 8 + 8-way 11bit ADC, 6-way PWM and other rich resources. At the same time, pl1166a RF chip is integrated on the chip to realize wireless remote control and other functions; The scheme collects the current of each lamp bead in real time to achieve the accurate closed-loop control of lamp bead current, which can effectively avoid the problem of brightness reduction caused by long-term use of lamp beads;

    1、 Scheme performance characteristics

    1. The main control chip pl51wt003 has rich resources and high integration;

    2. 11bit ADC module to collect the current of each lamp bead in real time;

    3. 6-channel PWM output, configured with AD value to accurately control current output;

    4. 16kb flash program space, which can optimize a variety of compensation algorithms;

    5. Integrate RF chip to optimize design cost.

    2、 Application block diagram

     

    3、 Selection table

    Series

    Part No.

    Flash

    SRAM

    EEPROM

    I/O

    Timer

    Connectivity

    ACMP.

    PWM

    OPA.

    ADC

    Touch Key

    DAC

    T.S.

    RF OSC.

    PLL

    Voltage

    Temp. Range

    2.4G T/RX

    ICP/ICD

    Package

    MoQ

    UART

    SPI

    I2C

    2.4G RF SoC

    PL51WT003B24

    16K

    256+1K

    256

    16

    3*16b

    1

    1

    1

    1

    6*12b

    1

    10*11b

    ~14

    1*5b

    Y

    12M

    /

    2.4-3.6

    -40-105°

    Y

    ICP/ICD

    SSOP24

    2K Tube

    PL51WT003S16

    16K

    256+1K

    256

    9

    3*16b

    1

    1

    1

    1

    4*12b

    0

    4*11b

    ~8

    1*5b

    Y

    12M

    /

    2.4-3.6

    -40-105°

    Y

    ICP/ICD

    SOP16

    2K Tube

    PL51WT020B24

    4K

    256

    128

    15

    3*16b

    1

    1

    1

    1

    4*12b

    /

    8*11b

    ~13

    /

    Y

    12M

    /

    2.0-3.6

    -40-105°

    Y

    ICP

    SSOP24

    2K Tube

    PL51WT020T20

    4K

    256

    128

    13

    3*16b

    1

    1

    1

    1

    4*12b

    /

    8*11b

    ~11

    /

    Y

    12M

    /

    2.0-3.6

    -40-105°

    Y

    ICP

    TSSOP20

    2K Tube

    PL51WT020S16

    4K

    256

    128

    8

    3*16b

    1

    1

    1

    0

    4*12b

    /

    2*11b

    ~6

    /

    Y

    12M

    /

    2.0-3.6

    -40-105°

    Y

    ICP

    SOP16

    2K Tube