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Texas Instruments TPS62821 | Demoboard TIDA-01579
High efficiency, low-output ripple power supply reference design for imaging application
Overview
| Topology | Buck Converter |
| Input voltage | 5 V |
| Output 1 | 3.3 V |
| IC revision | E1 |
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
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | ISAT1 (A) | ISAT2 (A) | RDC max. (mΩ) | fres (MHz) | Version | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR (A) | Z @ 1 GHz (Ω) | H (mm) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 74479275210 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PMCI Power Molded Chip Inductor | 1 | 1.55 | 3.45 | 75 | 120 | Standard | – | – | – | 3.7 | – | 1 | – | ||
 | 74279220601 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-MPSB EMI Multilayer Power Suppression Bead | – | – | – | 80 | – | SMT | 600 | 551 | 108 MHz | 2.1 | 103 | 0.9 | High Current |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 74479275210 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | |
| 74279220601 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | ISAT1 (A) | ISAT2 (A) | RDC max. (mΩ) | fres (MHz) | Version | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR (A) | Z @ 1 GHz (Ω) | H (mm) | Type | Samples |
|---|
