8.2.2 Detailed Design Procedure

8.2.2.1 Custom Design With WEBENCH® Tools

Click here to create a custom design using the TLVM13630 device with the WEBENCH® Power Designer.

2. Optimize the design for key parameters such as efficiency, footprint, and cost using the optimizer dial.

3. Compare the generated design with other possible solutions from Texas Instruments.

The WEBENCH Power Designer provides a customized schematic along with a list of materials with real-time

pricing and component availability.

In most cases, these actions are available:

• Run electrical simulations to see important waveforms and circuit performance.

• Run thermal simulations to understand board thermal performance.

• Export customized schematic and layout into popular CAD formats.

• Print PDF reports for the design, and share the design with colleagues.

Get more information about WEBENCH tools at www.ti.com/WEBENCH.

8.2.2.2 Output Voltage Setpoint

The output voltage of the TLVM13630 device is externally adjustable using a resistor divider. The recommended

R

OUT

1.0

1.0

×

R

FBT

(5)

For the desired output voltage of 5 V, the formula yields a value of 2.5 kΩ. Choose the closest available standard

8.2.2.3 Switching Frequency Selection

The recommended switching frequency for standard output voltages can be found in Table 7-1. For a 5-V output,

the recommended switching frequency is 1 MHz. To set the switching frequency to 1 MHz, connect a 13.0-kΩ

resistor between the RT pin and AGND.

8.2.2.4 Input Capacitor Selection

The TLVM13630 requires a minimum input capacitance of 2 × 4.7-µF ceramic type. High-quality ceramic type

capacitors with sufficient voltage and temperature rating are required. The voltage rating of input capacitors must

be greater than the maximum input voltage.

For this design, two 4.7-µF, 50-V, 1210 case size, ceramic capacitors are selected.

8.2.2.5 Output Capacitor Selection

The TLVM13630 requires a minimum of 25 µF of effective output capacitance for proper operation. High-

quality ceramic type capacitors with sufficient voltage and temperature rating are required. Additional output

capacitance can be added to reduce ripple voltage or for applications with transient load requirements.

For this design example, two 47-µF, 10-V, 1210 case size, ceramic capacitors are used, which have a total

effective capacitance of approximately 48 µF at 5 V.

8.2.2.6 Other Connections

VLDOIN is connected to VOUT to improve efficiency.

Place a 1-µF capacitor between the VCC pin and PGND, close to the device.

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TLVM13630

SLVSFT6 – MAY 2021

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Product Folder Links: TLVM13630