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TPS62933O Datasheet(PDF) 24 Page - Texas Instruments

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Part # TPS62933O
Description  TPS62933 3.8-V to 30-V, 3-A Synchronous Buck Converter in SOT583 Package
PDF  47 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS62933O Datasheet(HTML) 24 Page - Texas Instruments

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9 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.
9.1 Application Information
The TPS62933 is a highly integrated, synchronous, step-down, DC-DC converter. This device is used to convert
a higher DC input voltage to a lower DC output voltage, with a maximum output current of 3 A.
9.2 Typical Application
The application schematic of Figure 9-1 was developed to meet the requirements of the device. This circuit is
available as the TPS62933EVM evaluation module. The design procedure is given in this section.
VIN = 5.5V to 30V
VOUT = 5V/3A
GND
GND
GND
100nF
C3
100nF
C8
100nF
C5
22uF
C6
22uF
C7
VIN
3
BST
6
EN
2
FB
8
RT
1
SS
7
SW
5
GND
4
TPS62933DRLR
U1
10µF
C1
10µF
C2
GND
511k
R1
GND
88.7k
R2
0
R4
10.2k
R7
GND
53.6k
R6
10pF
C9
DNP
49.9
R5
33nF
C4
EN
SS
RT
SW
FB
GND
BST
6.8uH
L1
VIN
VIN
VOUT
GND
1
2
JP2
0
R3
1
2
3
JP1
GND
Figure 9-1. TPS62933 5-V Output, 3-A Reference Design
9.2.1 Design Requirements
Table 9-1 shows the design parameters for this application.
Table 9-1. Design Parameters
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
VIN
Input voltage
5.5
24
30
V
VOUT
Output voltage
5
V
IOUT
Output current rating
3
A
ΔVOUT
Transient response
Load step from 0.5 A→2.5
A→0.5 A, 0.8-A/μS slew rate
±5% ×
VOUT
V
VIN(ripple)
Input ripple voltage
400
mV
VOUT(ripple)
Output ripple voltage
30
mV
FSW
Switching frequency
RT = floating
500
kHz
tSS
Soft-start time
CSS = 33 nF
5
mS
VSTART
Start input voltage (Rising VIN)
8
V
VSTOP
Stop input voltage (Falling VIN)
7
V
TA
Ambient temperature
25
°C
TPS62933
SLUSEA4A – JUNE 2021 – REVISED DECEMBER 2021
www.ti.com
24
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Copyright © 2021 Texas Instruments Incorporated
Product Folder Links: TPS62933



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