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edeb
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- Inductor (L): Acts as an energy storage component and smooths out current.
- Capacitors (C1 and C2): One at the input to stabilize the input voltage and one at the output to reduce voltage ripple.
- Diode (D): Ensures current flows in one direction.
- Switching Element (Transistor Q1): Usually a MOSFET or a BJT to control the current flow.
- Control Circuit (IC): To manage the switching behavior, often a PWM controller IC is used.
- Resistors (R): May be used for configuring the feedback network for the control IC.
Suggested Schematic Connections- Inductor (L): Connect one end to the junction of the transistor and diode, and the other end to the input voltage.
- Input Capacitor (C1): Connect between the input voltage source and ground.
- Output Capacitor (C2): Connect between the output voltage and ground.
- Diode (D): Connect anode to the transistor and cathode to the output.
- Switching Element (e.g., MOSFET Q1):
- Connect the drain to the inductor.
- Connect the source to ground.
- Connect the gate to the PWM signal from the control circuit.
- Control Circuit (IC): Connect according to the datasheet to provide appropriate PWM signals.
- Feedback Network: Often includes resistors connected from output to control IC for voltage regulation.
General Steps- Select Components: Use specifications of your desired input and output voltages and current to select your inductor, capacitors, diode, and transistor.
- Control Scheme: Consider using a PWM controller to handle the switching operation.
- Layout and Routing: Plan your PCB layout, keeping power traces short and wide to handle high currents.
Next Stepsedeb
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- Wide Input Voltage Range: Typically handles inputs from 1.8V to 5.5V.
- Adjustable Output Voltage: Can be set via a resistor network.
- High Efficiency: Optimized for efficiency across a range of load conditions.
- Integrated Switching Components: Reduces the number of external components needed for a compact design.
- Protection Features: Includes current limiting and thermal shutdown.
Typical Application Circuit- Inductor (L1, L2) connected to pins 1 L1 and 12 L2.
- Input Capacitor (CIN) connected between pin 2 VIN and pin 4 GND.
- Output Capacitor (COUT) connected to pin 9 VOUT and pin 4 GND.
- Feedback Resistors for setting the desired output voltage, connected to the FB pin FB (pin 8).
Recommended Basic Connections for the TPS63051- Connect TPS63051:2 VIN to your input voltage source.
- Connect TPS63051:4 GND to the ground.
- Connect TPS63051:9 VOUT to your load.
- Connect TPS63051:8 FB to a voltage divider from VOUT for feedback.
- Optionally: Use pins TPS63051:3 EN, TPS63051:5 ILIM0, and TPS63051:6 ILIM1 to enable the chip and set current limits.
Next Steps