The TPS54061DRBR is a DC-DC converter from Texas Instruments (TI). Specifically, it is a step-down (buck) regulator. Below is a detailed explanation of its pin functions, the package type, and a FAQ section based on common user questions about this component.
Package and Pin Count
The TPS54061DRBR comes in a QFN-16 package with 16 pins. This package is suitable for surface-mount applications and provides a compact solution for Power management.
Pin Function Specifications
Below is a detailed breakdown of each pin and its function for the TPS54061DRBR in its QFN-16 package.
Pin Number Pin Name Function Description 1 VIN Input voltage pin (typically 3V to 60V). Provides power to the regulator. 2 BOOT Bootstrap pin. Connects to a capacitor (typically 0.1µF to 1µF) to support the high-side MOSFET gate drive. 3 PHASE Connection for the inductor and high-side MOSFET. This pin also connects to the switching node. 4 SWITCH Switching node for the internal MOSFET to drive the inductor and output. 5 GND Ground pin. Provides the reference for all the other voltage levels. 6 PGND Power ground pin. Connect to the ground plane for the power stage. 7 VOUT Output voltage pin. The regulated output of the buck converter is available here. 8 FB Feedback pin. Connect to a resistor divider from the output to set the output voltage. 9 EN Enable pin. Drive high to enable the regulator, or drive low to disable it. 10 COMP Compensation pin. Used for external frequency compensation to stabilize the feedback loop. 11 SS Soft-start pin. This pin is used to program the output voltage rise time to reduce inrush current. 12 DRV Output driver for controlling the internal high-side MOSFET gate. 13 NC No connection. This pin is not used and should be left floating or grounded. 14 SYNC Synchronization pin for external clock synchronization. 15 PG Power good output. Indicates when the output voltage is within tolerance. 16 V5V 5V output. Provides a 5V reference voltage for internal circuitry.Circuit Principle and Application
The TPS54061 is a high-efficiency buck converter designed for output voltages from 0.8V to 15V, with input voltages ranging from 3V to 60V. The device uses an integrated high-side and low-side MOSFET architecture for efficient conversion. The internal feedback loop adjusts the duty cycle to regulate the output voltage.
It operates in Pulse Width Modulation (PWM) mode to efficiently step down higher input voltages to lower, stable output voltages. The internal switch node is used for current flow between the input and output, while the feedback (FB) pin monitors the output voltage and adjusts the regulation accordingly.
Pin Function FAQ (20 Questions and Answers)
Q: What is the purpose of the VIN pin on the TPS54061DRBR? A: The VIN pin is the input voltage pin where the DC supply voltage is applied, typically ranging from 3V to 60V.
Q: How do I use the BOOT pin on the TPS54061DRBR? A: The BOOT pin connects to a bootstrap capacitor to provide voltage for the high-side MOSFET gate drive.
Q: What is the role of the PHASE pin on the TPS54061DRBR? A: The PHASE pin connects to the high-side switch and is used for the inductor connection. It also serves as the switching node.
Q: How should the SWITCH pin be used? A: The SWITCH pin is the switching node of the regulator and should