The part number "TPS22965DSGR" belongs to Texas Instruments (TI). It's a Power -Distribution Switch with configurable on-resistance (RON) and is designed for power management applications. Below is a detailed explanation of the pin functions, packaging information, and frequently asked questions (FAQ) in English.
Part Number: TPS22965DSGR Brand: Texas Instruments Package: 20-VQFN (20 pins) Function: Power-Distribution Switch with configurable on-resistance
Pin Function Description of the TPS22965DSGR (20 pins)
Below is a detailed table of the 20 pins for the TPS22965DSGR, showing the functions of each pin:
Pin Number Pin Name Pin Type Function Description 1 IN Input Input voltage pin, where the input power is applied to the device. The voltage should be within the specified range (typically 1.8V to 5.5V). 2 GND Ground Ground pin. Connect to the system ground. 3 OUT Output Output voltage pin, where the regulated power is supplied to the load. The output follows the input voltage unless turned off. 4 ON Input ON/OFF control pin. Pulling this pin low turns off the switch, pulling it high enables the switch. 5 SENSE Input Current sense pin. Used for monitoring output current and providing feedback for current-limit and overcurrent protection. 6 NC No Connect This pin is not internally connected to the device. Typically left floating. 7 FLT Output Fault indication pin. This pin is driven high when a fault condition (e.g., overcurrent) is detected. 8 EN Input Enable control pin. It is used to enable or disable the switch. Active high for enabling. 9 VDD Power Supply The power supply pin for the device's internal circuitry. Typically connected to a 3.3V or 5V supply. 10 C1+ Input Positive terminal for external capacitor connected to the input voltage. 11 C1- Input Negative terminal for external capacitor connected to the input voltage. 12 PGND Ground Power ground pin, connected to the system ground. It is used for the power section of the device. 13 FLT2 Output Secondary fault output pin. It may be used for secondary fault status monitoring. 14 TSD Input/Output Thermal Shutdown Pin. When the temperature of the device exceeds a certain threshold, it will shut down to prevent thermal damage. 15 IN2 Input Secondary input voltage pin. Used when there is a secondary input voltage rail in certain applications. 16 OUT2 Output Secondary output voltage pin for providing regulated power to other parts of the circuit. 17 GND2 Ground Secondary ground pin for the system ground. 18 VDD2 Power Supply Secondary power supply pin. 19 VSTBY Input Standby control pin. Used for putting the device into a low-power standby mode to reduce power consumption. 20 VDD_CTRL Control Controls the logic voltage level for certain device functions.Packaging Type:
The packaging for the TPS22965DSGR is a 20-pin VQFN (Very Thin Quad Flat No-lead) package, which is compact and ideal for modern surface-mount applications.
FAQs on TPS22965DSGR
1. What is the function of the ON pin in the TPS22965DSGR? The ON pin is used to enable or disable the switch. When this pin is pulled high, the switch is turned on; when pulled low, the switch is turned off.
2. How does the FLT pin work on the TPS22965DSGR? The FLT pin serves as a fault indicator. It is driven high when a fault such as overcurrent or thermal shutdown occurs, alerting the system to an issue.
3. What is the maximum operating voltage for the TPS22965DSGR? The maximum input voltage for the TPS22965DSGR is 5.5V. Ensure that the input voltage stays within this range to avoid damage.
4. Can I use the TPS22965DSGR for 3.3V systems? Yes, the TPS22965DSGR is compatible with 3.3V systems, as its input voltage range includes 3.3V.
5. What does the TSD pin represent? The TSD pin is for thermal shutdown monitoring. It provides an alert if the device’s temperature exceeds safe operating limits, prompting a shutdown to prevent damage.
6. What is the purpose of the SENSE pin? The SENSE pin is used for current-sensing applications. It provides feedback on the current flowing through the switch, useful for overcurrent protection.
7. Can I use the FLT2 pin for another fault condition? Yes, FLT2 is an additional fault output pin. It can be used for monitoring secondary fault conditions or providing an additional fault indicator.
8. Is the TPS22965DSGR capable of power sequencing? Yes, you can use the VSTBY pin to control the standby mode for power sequencing, allowing you to manage the timing of power-up and power-down operations.
9. Can I use the TPS22965DSGR for high-power applications? The TPS22965DSGR is suitable for low to moderate power applications. For higher power, ensure the current ratings match your application requirements.
10. What is the role of the GND pin? The GND pin is the main ground pin for the device. It should be connected to the system’s ground to complete the circuit.
11. What is the purpose of the VDD pin in the TPS22965DSGR? The VDD pin powers the internal logic of the device. It should be connected to an appropriate power supply, typically 3.3V or 5V.
12. Can the TPS22965DSGR be used with external Capacitors ? Yes, the device supports external capacitors for filtering and stabilization. Capacitors can be connected to the C1+ and C1- pins.
13. What happens if the input voltage exceeds the maximum rating? Exceeding the maximum input voltage of 5.5V could damage the device and affect its performance. Always ensure the voltage is within specified limits.
14. Is there any protection against overcurrent or short-circuit in the TPS22965DSGR? Yes, the device features overcurrent protection and will shut down the switch if the current exceeds the rated limit.
15. What is the significance of the NC pin? The NC (No Connect) pin is not internally connected to the device and can be left floating in the circuit.
16. How does the EN pin differ from the ON pin? The EN pin is used to enable the switch, while the ON pin is used to turn it on or off. Both can control the power flow, but EN is typically more direct.
17. Can I connect the VDDCTRL pin to any logic supply? Yes, the VDDCTRL pin controls logic voltage levels for certain internal functions, and it can be connected to an appropriate logic voltage supply.
18. Does the TPS22965DSGR support thermal management? Yes, the thermal shutdown function via the TSD pin provides protection against overheating.
19. Can I cascade multiple TPS22965DSGR devices for higher power distribution? Yes, you can connect multiple TPS22965DSGR devices in parallel for higher power distribution, as long as the current ratings are within limits.
20. What type of load can I connect to the output of the TPS22965DSGR? The output of the TPS22965DSGR can drive low-to-moderate power loads. Ensure that the current rating does not exceed the switch's capabilities.
This detailed explanation should give a complete understanding of the TPS22965DSGR's pin functions, packaging, and frequently asked questions.