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TPS54202 |
SLVSD26B – APRIL 2016 – REVISED APRIL 2021 |
8 Application and Implementation
Note
Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes, as well as validating and testing their design implementation to confirm system functionality.
8.1 Application Information
The TPS54202 device is typically used as a step down converter, which convert an input voltage from 8 V to 28 V to fixed output voltage 5 V.
8.2Typical Application
8.2.1TPS54202 8-V to 28-V Input, 5-V Output Converter
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U1 |
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TPS54202 |
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C3 |
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VIN = 8V ~ 28V |
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3 VIN |
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6 |
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VIN |
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BOOT |
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L1 15PH |
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0.1PF |
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R4 |
1 |
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2 |
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VOUT = 5V,2A |
VOUT |
C1 |
C2 |
511lQ |
GND |
SW |
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10PF |
0.1PF |
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C4 |
C5 |
R1 |
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5 EN |
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4 |
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22PF |
22PF |
49.9 Q |
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FB |
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R2 |
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C6 |
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100lQ |
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75pF |
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R5 |
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105lQ |
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R3 |
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13.3lQ |
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Copyright © 2016, Texas Instruments Incorporated |
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Figure 8-1. 5-V, 2-A Reference Design
8.2.2 Design Requirements
For this design example, use the parameters in Table 8-1.
Table 8-1. Design Parameters
PARAMETER |
VALUE |
Input voltage range |
8 V to 28 V |
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Output voltage |
5 V |
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Output current |
2 A |
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Transient response, 1.5 A load step |
ΔVOUT = ±5 % |
Input ripple voltage |
400 mV |
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Output voltage ripple |
30 mVpp |
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Switching frequency |
500 kHz |
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Copyright © 2021 Texas Instruments Incorporated |
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