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Texas Instruments TPS62821 | Demoboard TIDA-01579
High efficiency, low-output ripple power supply reference design for imaging application
Details
| Topologie | Abwärtswandler |
| Eingangsspannung | 5 V |
| Ausgang 1 | 3.3 V |
| IC-Revision | E1 |
Beschreibung
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.
Eigenschaften
- 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
Typische Anwendungen
- 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
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | L(µH) | ISAT1(A) | ISAT2(A) | RDC max.(mΩ) | fres(MHz) | Z @ 100 MHz(Ω) | Zmax(Ω) | Testbedingung Zmax | IR(A) | Z @ 1 GHz(Ω) | H(mm) | Typ | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-PMCI Power Molded Chip Induktivität, 1 µH, 1.55 A | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-PMCI Power Molded Chip Induktivität | Induktivität1 µH | Sättigungsstrom 11.55 A | Sättigungsstrom 23.45 A | Gleichstromwiderstand75 mΩ | Eigenresonanzfrequenz120 MHz | – | – | – | Nennstrom3.3 A | – | Höhe1 mm | – | ||||
 | WE-MPSB EMI Multilayer Power Suppression Bead, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-MPSB EMI Multilayer Power Suppression Bead | – | – | – | Gleichstromwiderstand80 mΩ | – | Impedanz @ 100 MHz600 Ω | Maximale Impedanz551 Ω | Maximale Impedanz108 MHz | Nennstrom2.1 A | Impedanz @ 1 GHz103 Ω | Höhe0.9 mm | TypHochstrom |