IC manufacturers Texas Instruments

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Texas Instruments TPS62821 | Demoboard TIDA-01579

High efficiency, low-output ripple power supply reference design for imaging application

Overview

TopologyBuck Converter
Input voltage5 V
Output 13.3 V
IC revisionE1

Description

The point-of-load power-tree on video surveillance systems is optimized with this reference design. This reference design has a high performance on key parameters such as output voltage accuracy, voltage ripple, and thermal dissipation. This high performance is possible with a small board area and low BOM cost. This design operates from a 5-V supply commonly found in video doorbells, IP network cameras, and wireless cameras.

Features

  • 1% typical output voltage accuracy
  • High system efficiency to 90% at full load
  • Voltage ripple < 60-μV, useful for noise-critical peripherals
  • Thermal hot spot is < 45°C at full load current
  • Power supply spur free dynamic resolution greater than 80dBSmall form factor

Typical applications

  • POL supply in Portable/Battery Powered Devices
  • Mobile Computing, Networking Cards / Solid State Drive / Data Terminal, Point of Sale / Servers, Projectors, Printers
  • Factory and Building Automation

Products

Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
ISAT1
(A)
ISAT2
(A)
RDC max.
(mΩ)
fres
(MHz)
VersionZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR
(A)
Z @ 1 GHz
(Ω)
H
(mm)
Type Samples
74479275210SPEC
8 files WE-PMCI Power Molded Chip Inductor 1 1.55 3.45 75 120 Standard 3.7 1
74279220601SPEC
8 files WE-MPSB EMI Multilayer Power Suppression Bead 80 SMT 600 551 108 MHz 2.1 103 0.9 High Current
Order Code Data­sheet Simu­lation
74479275210SPEC
74279220601SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
ISAT1
(A)
ISAT2
(A)
RDC max.
(mΩ)
fres
(MHz)
VersionZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR
(A)
Z @ 1 GHz
(Ω)
H
(mm)
Type Samples