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Texas Instruments LM5155 | Demoboard PMP22151
70-W flyback and 37-W boost power tree reference design
Overview
| Topology | Boost Converter |
| Input voltage | 27-29 V |
| Output 1 | 37 V / 1 A |
| IC revision | B |
Description
This reference design uses two LM5155 devices to make a flyback and boost power stage. The flyback creates an isolated 28 Vdc bus from a 24 +/-10% Vdc bus and the boost creates a 37 Vdc bus from the output of the flyback. The flyback can be loaded up to 70 W and the boost can be loaded up to 37-W. All components are placed on one side of the board to reduce assembly complexity and cost. Both power stages achieve over 90% efficiency across output conditions.
Features
- High efficiency flyback and boost power stage
- Compact size (2" x 3.75") minimizes solution size area
- Single-side assembly and 2-layer PCB for reduced manufacturing costs
Typical applications
- Fire alarm control panel (FACP)
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | ISAT,10% (A) | ISAT,30% (A) | IR,40K (A) | IRP,40K (A) | RDC max. (mΩ) | fres (MHz) | Size | Version | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 7447709390 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PD SMT Power Inductor | 39 | 5 | 6.2 | 4.1 | 5 | 56 | 6 | 1210 | Standard |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 7447709390 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | ISAT,10% (A) | ISAT,30% (A) | IR,40K (A) | IRP,40K (A) | RDC max. (mΩ) | fres (MHz) | Size | Version | Samples |
|---|