 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
INA3221-Q1 Datasheet(PDF) 13 Page - Texas Instruments |
|
|
|
|||||||||||||||||||||||||||||
INA3221-Q1 Datasheet(HTML) 13 Page - Texas Instruments |
|
|
13 / 45 page  1.2 V Detected on Channel-1 Bus-Voltage Measurement Measure for 1.2 V on Channel-2 Bus Voltage 1.2 V on Channel 2 Detected 1.2 V on Channel 2 Not Detected Timing Control Output High Low 28.6 ms S Ch 1 S Ch 2 S Ch 3 S Ch 1 S Ch 2 S Ch 3 S Ch 1 S Ch 2 S Ch 3 S Ch 1 S Ch 2 S Ch 3 S Ch 1 S Ch 2 S Ch 3 Signal Channel 1.2 V Detected on Channel-1 Bus-Voltage Measurement Measure For 1.2 V on Channel-2 Bus Voltage 2.2 ms 28.6 ms B B B B B B B B B B B B B B B Power-Valid Detection INA3321 VS PV VPU RPU RPU_ext RDIV (1) 13 INA3221-Q1 www.ti.com SBOS776B – MARCH 2016 – REVISED MARCH 2016 Product Folder Links: INA3221-Q1 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Feature Description (continued) The PV pin allows for a 0-V output that indicates a power-invalid condition. An output equal to the pull-up supply voltage connected to the VPU pin indicates a power-valid condition, as shown in Figure 20. It is also possible to divide down the high power-valid pull-up voltage by adding a resistor to ground at the PV output, thus allowing this function to interface with lower-voltage circuitry, if needed. (1) RDIV can be used to level-shift the PV output high. Figure 20. Power-Valid Output Structure 8.3.2.4 Timing-Control Alert The INA3221-Q1 timing-control alert function helps verify proper power-supply sequencing. At power-up, the default INA3221-Q1 setting is continuous shunt- and bus-voltage conversion mode, and the INA3221-Q1 internally begins comparing the channel-1 bus voltage to determine when a 1.2-V level is reached. This comparison is made each time the sequence returns to the channel-1 bus-voltage measurement. When a 1.2-V level is detected on the channel-1 bus-voltage measurement, the INA3221-Q1 begins checking for a 1.2-V level present on the channel-2 bus-voltage measurement. After a 1.2-V level is detected on channel 1, if the INA3221- Q1 does not detect a 1.2-V value or greater on the bus voltage measurement following four complete cycles of all three channels, the timing control (TC) alert pin pulls low to indicate that the INA3221-Q1 has not detected a valid power rail on channel 2. As shown in Figure 21, this sequence allows for approximately 28.6 ms from the time 1.2 V is detected on channel 1 for a valid voltage to be detected on channel 2. Figure 22 illustrates the state diagram for the TC alert pin. NOTE: The signal refers to the corresponding shunt (S) and bus (B) voltage measurement for each channel. Figure 21. Timing Control Timing Diagram Figure 22. Timing Control State Diagram |
Similar Part No. - INA3221-Q1 |
|
Similar Description - INA3221-Q1 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
