TPS40210DGQR Detailed explanation of pin function specifications and circuit principle instructions
The part number "TPS40210DGQR" is a Buck Converter manufactured by Texas Instruments (TI). It is typically used for Power regulation applications, providing efficient step-down voltage conversion.
Package:
The "DGQR" suffix denotes a VQFN-24 (Very thin Quad Flat No-lead) package with 24 pins. This means the component has 24 leads and comes in a thin, compact form.
Below is the detailed function of each of the 24 pins and their usage instructions.
Pin Function Table:
Pin Number Pin Name Function Description 1 SW Switch Node: Connect to inductor for power delivery to the load. 2 GND Ground: Connect to the system ground for circuit reference. 3 FB Feedback Pin: Used to set the output voltage with an external resistor divider. 4 VCC Power Supply Pin: Connect to the input voltage (typically 5V-60V). 5 COMP Compensation Pin: For external compensation network for the control loop. 6 DRV Gate Driver Pin: Connect to the external MOSFET gate to drive it for switching. 7 PGND Power Ground: Used for high-current paths, specifically for the power stage. 8 EN Enable Pin: Used to enable or disable the device when pulled low. 9 SS Soft-Start Pin: Connect a capacitor for controlling the startup time of the converter. 10 VOUT Output Voltage Pin: Connects to the output capacitor to stabilize the output voltage. 11 ISEN+ Current Sense Positive Input: Used to sense current in the power MOSFET. 12 ISEN- Current Sense Negative Input: Complements the current sense for monitoring the load. 13 RT/CT Timing Resistor or Capacitor: Sets the switching frequency when connected externally. 14 PGOOD Power Good Output: Indicates whether the output is within the desired voltage range. 15 OUT Output Pin: Provides the output voltage to the load. 16 VDD Internal Voltage Supply Pin: Provides power to the internal logic. 17 VOUTSENSE Output Voltage Sense: Monitors the output voltage for regulation. 18 RT Resistor for Timing: A resistor used for setting the device frequency. 19 CSEL Current Sense Select: Selects different current sense configurations. 20 PGND2 Additional Power Ground Pin for high-current path. 21 BOOST Boost Capacitor Pin: Provides energy to the gate driver for proper MOSFET operation. 22 LD Inductor Driver Pin: Drives the inductor in the power conversion circuit. 23 VCC2 Secondary Voltage Input Pin: Used for an auxiliary power supply to the chip. 24 OUT2 Auxiliary Output Pin: Secondary output for multi-output configurations.FAQs for TPS40210DGQR (Pin Functionality):
What is the purpose of the SW pin in TPS40210DGQR? The SW pin is the switch node of the buck converter and connects to the inductor. It allows for the delivery of power to the load. Why is the GND pin crucial for TPS40210DGQR? The GND pin serves as the reference ground for the entire circuit and provides a common return path for the current. How does the FB pin help in the voltage regulation process? The FB pin is used for feedback regulation. By connecting a resistor divider to this pin, you set the output voltage for the converter. What does the VCC pin supply power to? The VCC pin is where the input voltage (typically between 5V-60V) is applied to the device. What role does the COMP pin play in the TPS40210DGQR? The COMP pin connects to an external compensation network that controls the stability of the feedback loop. What does the DRV pin control? The DRV pin is used to drive the gate of an external MOSFET, which is key to the switching function of the converter. What is the purpose of the PGND pin? PGND is the power ground pin, providing the return path for high-current flows and connecting to the power stage. What is the significance of the EN pin in TPS40210DGQR? The EN pin is the enable pin that allows you to start or stop the converter by pulling it low or high. How does the SS pin affect the operation of the converter? The SS pin connects to a capacitor that controls the soft-start time of the converter, minimizing inrush current during startup.What function does the VOUT pin serve?
The VOUT pin is the output voltage pin, connecting to the output capacitor and stabilizing the output voltage.How does the ISEN+ pin work with the ISEN- pin?
These pins are part of the current sensing mechanism, monitoring the current flowing through the power MOSFET.What is the RT/CT pin used for?
The RT/CT pin is for setting the switching frequency by connecting an external resistor or capacitor.What is the purpose of the PGOOD pin?
The PGOOD pin provides a status signal indicating whether the output voltage is within the desired range.How does the OUT pin function in TPS40210DGQR?
The OUT pin provides the regulated output voltage to the load.What is the role of the VDD pin?
The VDD pin supplies power to the internal circuitry of the chip, necessary for logic operation.Why is the VOUTSENSE pin important?
The VOUTSENSE pin is used to sense the actual output voltage, ensuring regulation.How do I use the RT pin for frequency control?
By connecting an external resistor to the RT pin, you can set the switching frequency of the converter.What does the CSEL pin control in the TPS40210DGQR?
The CSEL pin allows the selection of different current sensing configurations, giving you flexibility in monitoring current.What is the function of the PGND2 pin?
PGND2 is an additional ground pin for the power stage, used to support high-current paths.How does the BOOST pin work in the switching process?
The BOOST pin connects to a capacitor that helps supply the gate driver with sufficient voltage to turn the MOSFET on and off properly.This explanation has covered each pin function in detail for the TPS40210DGQR, including how each pin contributes to the overall operation of the device.
