The model "TPS563209DDCR" is from Texas Instruments (TI). It is a DC-DC buck converter that typically comes in a VQFN-20 (20-pin) package.
Pin Function Specifications for the TPS563209DDCR:
The TPS563209DDCR has 20 pins in a VQFN-20 package. Below is a detailed pinout and function description:
Pin Number Pin Name Pin Function Description 1 VIN Input voltage pin. It provides Power to the regulator from a DC supply. The typical voltage range is 4.5V to 60V. 2 PGND Power Ground pin. Connects the ground plane of the power stage and is used for the return path of the power switch. 3 SW Switch node. This pin connects to the internal switching node and external inductor, where the switching action takes place. 4 VOUT Output voltage pin. Provides the regulated output voltage to the load. The voltage is adjustable based on the feedback. 5 FB Feedback pin. Used to monitor the output voltage and provide feedback to the internal voltage regulator. 6 COMP Compensation pin. Used to adjust the external compensation network, influencing the stability and response of the regulator. 7 SS Soft-Start pin. It controls the ramp-up time for the output voltage, preventing inrush current during startup. 8 EN Enable pin. A logic-high signal turns on the regulator, and a logic-low signal disables it. 9 VDD Power supply voltage pin for the internal circuitry. It is typically powered by the VIN input voltage. 10 AGND Analog ground pin. Provides a clean return path for the analog circuits within the IC. 11 VDD1 Auxiliary power input. Provides voltage for the internal control circuitry. 12 VSS System ground pin. Used for connecting the system ground to the internal ground of the device. 13 VREF Reference voltage output pin. Provides a stable reference voltage for internal circuits and feedback systems. 14 LDRV Low-side driver pin. Controls the low-side MOSFET within the switch mode power supply. 15 HDRV High-side driver pin. Controls the high-side MOSFET within the switch mode power supply. 16 DNC Do Not Connect pin. This pin should not be used for any signal or connection. 17 VOUT-EN Output enable pin. A logic-high signal enables the output voltage, and a logic-low signal disables it. 18 RST Reset pin. This pin indicates when the output voltage is within regulation, often used for monitoring. 19 OVP Over-voltage protection pin. Provides feedback to the device when the output voltage exceeds a set threshold. 20 LDOOUT LDO output pin. Provides an additional low-dropout regulator output for certain system applications.Circuit Principle of the TPS563209DDCR:
The TPS563209DDCR is a synchronous buck converter with a wide input voltage range. It regulates an input voltage (typically 4.5V to 60V) down to a lower, stable output voltage through the following process:
Input Voltage (VIN) is applied to the SW pin and through the inductor. The internal high-side and low-side MOSFETs alternate switching, transferring energy through the inductor and creating a regulated output voltage at the VOUT pin. The output voltage is monitored using the FB pin, where feedback is provided to adjust the duty cycle of the switching action to maintain the set output voltage. The COMP pin helps with the stability of the regulator by providing compensation. The SS pin ensures a soft-start, ramping up the output voltage gradually to avoid large inrush currents. The EN pin controls the enable/disable state of the device, while the VREF pin provides a reference voltage to the system.FAQs about TPS563209DDCR:
1. What is the input voltage range for the TPS563209DDCR?The input voltage range for the TPS563209DDCR is from 4.5V to 60V.
2. What type of device is the TPS563209DDCR?The TPS563209DDCR is a synchronous buck converter designed to step down DC input voltages to a regulated lower output voltage.
3. How do I enable the TPS563209DDCR?The TPS563209DDCR is enabled by applying a logic-high signal to the EN pin. A logic-low signal will disable the device.
4. **What is the function of the *FB* pin?**The FB pin is used for feedback from the output voltage. It ensures that the output voltage stays within regulation by comparing it to a reference voltage.
5. **What is the purpose of the *SS* pin?**The SS pin is used to control the soft-start time for the output voltage, preventing inrush currents during power-up.
6. **Can I use the *VDD* pin to power the device?**Yes, the VDD pin powers the internal circuitry of the device and is typically supplied from the VIN pin.
7. **What is the role of the *VREF* pin?**The VREF pin provides a stable reference voltage that is used internally for voltage regulation and feedback purposes.
8. How do I adjust the output voltage?The output voltage is adjusted by selecting appropriate feedback components (resistors) that are connected to the FB pin.
9. What is the maximum output current of the TPS563209DDCR?The TPS563209DDCR can support up to 2A of output current, depending on the input voltage and the output voltage configuration.
10. What is the switching frequency of the TPS563209DDCR?The TPS563209DDCR operates at a switching frequency of around 1.5 MHz.
11. How do I calculate the output voltage for the TPS563209DDCR?The output voltage can be calculated using the feedback resistors and the feedback loop. The formula is typically based on the feedback reference voltage and the resistor values connected to the FB pin.
12. **What is the *SW* pin used for?**The SW pin connects to the inductor and is the switching node where the high-side and low-side MOSFETs alternate to create the output voltage.
13. Can the TPS563209DDCR be used in automotive applications?Yes, the TPS563209DDCR can be used in automotive applications due to its wide input voltage range and robust performance.
14. What is the package type for the TPS563209DDCR?The TPS563209DDCR comes in a VQFN-20 package.
15. Is there an over-voltage protection feature in the TPS563209DDCR?Yes, the device includes an OVP pin that detects over-voltage conditions at the output.
16. What is the maximum operating temperature for the TPS563209DDCR?The maximum operating temperature for the TPS563209DDCR is typically 125°C.
17. **What does the *PGND* pin do?**The PGND pin provides a low-impedance ground return for the power switching stage.
18. **Can I use the *LDOOUT* pin to power other devices?**Yes, the LDOOUT pin provides an additional regulated voltage output, which can be used to power other low-power devices.
19. **What is the function of the *DNC* pin?**The DNC pin is a “Do Not Connect” pin, meaning it should not be used for any signal or connection.
20. What is the output voltage range for the TPS563209DDCR?The output voltage range for the TPS563209DDCR is adjustable from 0.8V to 15V, depending on the feedback configuration.
This detailed explanation and FAQ section covers the pin functions, circuit principle, and common user questions about the TPS563209DDCR.
