TS2515

3A / 380KHz PWM Buck Converter

3/7

Version: A09

Application Circuit

Typical Circuit

1.8V

2.5V

3.3V

5V

L1 Value

15uH

15uH

22uH

22uH

Function Descriptions

PWM Control

The TS2515 consists of DC/DC converters that employ a pulse-width modulation (PWM) system. In converters of the

TS2515, the pulse width varies in a range from 0 to 100%, according to the load current. The ripple voltage produced

by the switching can easily be removed through a filter because the switching frequency remains constant. Therefore,

these converters provide a low-ripple power over broad ranges of input voltage and load current.

Setting the Output Voltage

Application circuit item shows the basic application circuit with TS2515 adjustable output version. The external resistor

sets the output voltage according to the following equation:

Table 1: Resistor select for output voltage setting

R2

R1

5V

5.6K

1.8K

3.3V

5.6K

3.3K

2.5V

1.25K

1.2K

1.8V

2.2K

4.7K

1.5V

1.1K

4.7K