TPS54360BQDDARQ1 Detailed explanation of pin function specifications and circuit principle instructions

The part number "TPS54360BQDDARQ1" is from Texas Instruments (TI). It is a DC-DC buck converter in a QFN (Quad Flat No-lead) package. The part specifically belongs to TI’s TPS54360 series, which is designed for Power supply applications where efficient voltage conversion is required.

Key Specifications:

Device Family: TPS54360 Package Type: QFN-32 (32 pins) Function: 3.5A output, 60V DC-DC buck converter Input Voltage Range: 4.5V to 60V Output Voltage Range: 0.8V to 15V Peak Efficiency: Up to 95% Operating Frequency: 500kHz

Detailed Explanation of Pin Function Specifications:

The TPS54360BQDDARQ1 comes in a 32-pin QFN package, and each pin has a specific role to play in the operation of the device. Below is the detailed description of the pins.

Pin Function Table for TPS54360BQDDARQ1: Pin Number Pin Name Pin Function 1 VIN Input Voltage Pin: Connect to the input power source (4.5V to 60V). 2 VSS Ground Pin: Connect to the system ground. 3 PGND Power Ground Pin: Connect to the ground of the power stage. 4 COMP Compensation Pin: Used to adjust feedback compensation to control the stability of the converter. 5 FB Feedback Pin: Used to sense the output voltage for regulation purposes. Connect to an external resistor divider to set the output voltage. 6 EN Enable Pin: Logic input for enabling the converter (active high). Connect to logic high to enable operation. 7 SS Soft Start Pin: A capacitor on this pin sets the soft start time to limit inrush current at startup. 8 BOOT Bootstrap Pin: Provides the voltage to the high-side MOSFET gate driver for operation. Connect to the boost capacitor. 9 SW Switch Pin: The switching node, which is connected to the inductor and the high-side MOSFET. 10 PGOOD Power Good Pin: Open-drain output that indicates if the output voltage is within regulation. 11 FREQ Frequency Selection Pin: Selects the switching frequency of the converter. 12 SYNC Synchronization Pin: Used to synchronize the converter to an external clock if desired. 13 VREF Reference Voltage Pin: Provides a stable reference voltage of 0.8V to set output voltage in feedback loop. 14 VOUT Output Voltage Pin: Connect to the load. The output voltage is regulated based on the feedback. 15 VOSENSE Output Voltage Sense Pin: Senses the output voltage at the load. 16 PGND Power Ground Pin: Connect to the power ground to minimize noise in the signal path. 17 CS+ Current Sense Positive Pin: Provides feedback for current sense in the power converter. 18 CS- Current Sense Negative Pin: Provides feedback for current sense in the power converter. 19 ISNS Current Sense Pin: Monitors the current of the inductor for over-current protection. 20 VINS Input Voltage Sense Pin: Used for accurate input voltage sensing. 21 RAMP Ramp Pin: Sets the slope for current limit regulation. 22 SLOPE Slope Compensation Pin: Sets the slope for current mode control to improve stability. 23 PHASE Phase Pin: Provides the phase signal for multiple phase operation, if applicable. 24 DRV Driver Pin: Drives the low-side MOSFET gate to control power flow. 25 GND Ground Pin: General ground connection for all signals. 26 VOS Voltage Sense Pin: Used for precise voltage sensing for feedback. 27 VDD Power Supply Pin: Connect to the main supply for internal regulation. 28 FADJ Feedback Adjustment Pin: Used for fine-tuning feedback loop compensation. 29 CTRL Control Pin: Used to adjust control parameters, such as current limit or voltage scaling. 30 PWRGOOD Power Good Indicator Pin: Indicates whether the output voltage is within regulation limits. 31 VINT Internal Voltage Pin: Provides voltage to internal circuitry for the converter. 32 TST Test Pin: Used for factory testing purposes.

Pin Description Details:

VIN (Pin 1): This is where the input voltage is provided to the converter, ranging from 4.5V to 60V. It connects directly to the source of input power, such as a battery or DC supply. VSS (Pin 2): This is the ground pin for the system, necessary for completing the circuit. PGND (Pin 3): This pin is used to connect to the ground of the power stage, which is typically isolated from the main VSS ground to reduce noise in the high-current paths. COMP (Pin 4): Used for feedback loop compensation. A capacitor can be added here to stabilize the feedback loop and ensure proper operation. FB (Pin 5): The feedback pin is used to regulate the output voltage. It receives a signal from the output voltage divider network to compare it against the reference voltage (0.8V). The output voltage is adjusted accordingly to keep the feedback voltage at the desired level.

Frequently Asked Questions (FAQ):

Q1: What is the input voltage range for TPS54360BQDDARQ1? A1: The input voltage range for the TPS54360BQDDARQ1 is from 4.5V to 60V.

Q2: How can I enable the TPS54360BQDDARQ1? A2: The TPS54360BQDDARQ1 can be enabled by applying a logic-high signal to the EN (Pin 6).

Q3: What is the function of the PGOOD pin? A3: The PGOOD pin (Pin 10) is an open-drain output that indicates whether the output voltage is within the acceptable regulation range.

Q4: How can I adjust the switching frequency of TPS54360BQDDARQ1? A4: The switching frequency can be adjusted by connecting a resistor to the FREQ pin (Pin 11).

Q5: What is the maximum output current for TPS54360BQDDARQ1? A5: The maximum output current for the TPS54360BQDDARQ1 is 3.5A.

Q6: How do I synchronize the TPS54360BQDDARQ1 to an external clock? A6: To synchronize the TPS54360BQDDARQ1 to an external clock, connect the clock signal to the SYNC pin (Pin 12).

Q7: What is the function of the SS pin (Pin 7)? A7: The SS pin is used to set the soft-start time of the converter, limiting inrush current at startup.

Q8: Can I monitor the output voltage directly? A8: Yes, the output voltage can be monitored through the VOUT pin (Pin 14) and the VOSENSE pin (Pin 15).

Q9: What is the purpose of the CS+ and CS- pins? A9: The CS+ and CS- pins (Pins 17 and 18) are used to sense the current through the inductor for current protection and control.

Q10: Can the TPS54360BQDDARQ1 be used for multi-phase operation? A10: Yes, the TPS54360BQDDARQ1 can be used in multi-phase operation. The PHASE pin (Pin 23) is used to provide the phase signal.

This explanation provides detailed information about the pin functions, their corresponding descriptions, and answers to the most common questions about the device. If you need further details on specific aspects of the circuit or usage, feel free to ask!