Electronic Components Datasheet Search |
|
TCC-206 Datasheet(PDF) 6 Page - ON Semiconductor |
|
TCC-206 Datasheet(HTML) 6 Page - ON Semiconductor |
6 / 33 page TCC−206 www.onsemi.com 6 THEORY OF OPERATION Overview The control IC outputs are directly controlled by programming the six DACs (DAC A, DAC B, DAC C, DAC D, DAC E and DAC F) through the digital interface. The DAC stages are driven from a reference voltage, generating an analog output voltage driving a high−voltage amplifier supplied from the boost converter (see Figure 1 − Control IC Functional Block Diagram). The control IC output voltages are scaled from 0 V to 24 V, with 128 steps of 188 mV ((2 x 24 / 255 V) = 0.188235 V). The nominal control IC output can be approximated to 188 mV x (DAC value). For performance optimization the boost output voltage (VHV) can be programmed to levels between 13 V and 28 V via the DAC_boost register (4 bits with 1 V steps). The startup default level for the boosted voltage is VHV = 24 V. For proper operation and to avoid saturation of the output devices and noise issues it is recommended to operate the boosted VHV voltage at least 2 V above the highest programmed VOUT voltage of any of the six outputs. Operating Modes The following operating modes are available: 1. Shutdown Mode: All circuit blocks are off, the DAC outputs are disabled and placed in high Z state and current consumption is limited to minimal leakage current. The shutdown mode is entered upon initial application of AVDD or upon VIO being placed in the low state. The contents of the registers are not maintained in shutdown mode. 2. Startup Mode: Startup is only a transitory mode. Startup mode is entered upon a VIO high state. In startup mode all registers are reset to their default states, the digital interface is functional, the boost converter is activated, outputs OUT A, OUT B, OUT C, OUT D, OUT E and OUT F are disabled and the DAC outputs are placed in a high Z state. Control software can request a full hardware and register reset of the TCC−206 by sending an appropriate PWR_MODE command to direct the chip from either the active mode or the low power mode to the startup mode. From the startup mode the device automatically proceeds to the active mode. 3. Active Mode: All blocks of the TCC−206 are activated and the DAC outputs are fully controlled through the digital interface, DACs remain off until enabled. The DAC settings can be dynamically modified and the HV outputs will be adjusted according to the specified timing diagrams. Each DAC can be individually controlled and/or switched off according to application requirements. Active mode is automatically entered from the startup mode. Active mode can also be entered from the low power mode under control software command. 4. Low Power Mode: In low power mode the serial interface stays enabled, the DAC outputs are disabled and are placed in a high Z state and the boost voltage circuit is disabled. Control software can request to enter the low power mode from the active mode by sending an appropriate PWR_MODE command. The contents of all registers are maintained in the low power mode. Shutdown Startup (Registers reset) Active Low Power (User Defined) PWR_MODE = 0b10 VDDA = 0 Figure 3. Modes of Operation Battery insertion (User Defined) PWR_MODE = 0b01 automatic VIO = HIGH VIO = LOW VIO = LOW PWR_MODE = 0b00 PWR_MODE = 0b01 |
Similar Part No. - TCC-206 |
|
Similar Description - TCC-206 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |