Electronic Components Datasheet Search |
|
TPS65632 Datasheet(PDF) 11 Page - Texas Instruments |
|
TPS65632 Datasheet(HTML) 11 Page - Texas Instruments |
11 / 28 page CTRL VPOS VNEG 10 ms (typ.) EN AVDD TPS65632 www.ti.com SLVSCY2 – MARCH 2015 Figure 6. Start-Up Sequence 8.3.5 Enable (CTRL) The CTRL pin serves two functions: one is to enable and disable the device, and the other is to program the output voltage (VNEG) of the inverting buck-boost converter (see Programming VNEG). If the VNEG programming function is not required the CTRL pin can be used as a standard enable pin for the device, which will start up with its default value of –4.0 V on VNEG. The device is enabled when CTRL is pulled high and disabled when CTRL is pulled low. Note that to ensure proper start up CTRL must be pulled low for a minimum of 200 µs before being pulled high again. 8.3.6 Undervoltage Lockout The device features an undervoltage lockout function that disables it when the input supply voltage is too low for proper operation. 8.3.7 Short-Circuit Protection 8.3.7.1 Short Circuits During Operation The device is protected against short circuits of VPOS and VNEG to ground and short circuit of these two outputs to each other. During normal operation an error condition is detected if VPOS falls below 4.1 V for longer than 3 ms or VNEG is pulled above the programmed nominal output by 500 mV for longer than 3 ms. In either case the device goes into shutdown and the outputs are disconnected from the input. This state is latched, and to resume normal operation, VI has to cycle below the undervoltage lockout threshold, or CTRL has to toggle LOW and then HIGH. 8.3.7.2 Short Circuits During Start Up During start up an error condition is detected in the following cases: • VPOS is not in regulation 10 ms after CTRL goes HIGH • VNEG is higher than threshold level 10 ms after CTRL goes HIGH • VNEG is not in regulation 20 ms after CTRL goes HIGH whitespace If any of the above conditions is met the device goes into shutdown and the outputs are disconnected from the input. This state is latched, and to resume normal operation VI has to cycle below the undervoltage threshold, or CTRL has to toggle LOW and HIGH. 8.3.8 Output Discharge During Shut Down The device discharges outputs during shutdown. Figure 7 shows the discharge control. Copyright © 2015, Texas Instruments Incorporated Submit Documentation Feedback 11 |
Similar Part No. - TPS65632_15 |
|
Similar Description - TPS65632_15 |
|
|
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 |