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Texas Instruments LM5155 | Demoboard PMP22151
70-W flyback and 37-W boost power tree reference design
Overview
| Topology | Flyback Converter |
| Input voltage | 18-29 V |
| Output 1 | 28 V / 2.5 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 | Application | PCB/Cable/Panel | Modularity | Wire Section | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Mount | Endurance (h) | Operating Temperature | IRIPPLE (mA) | ILeak (µA) | Pitch (mm) | Ø D (mm) | Pins (Value) (pcs) | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 691214110002 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-TBL Series 2141 - 3.50 mm Horiz. Entry Modular | Rising Cage Clamp | PCB | Yes | 24 to 16 (AWG) 0.2 to 1 (mm²) | – | – | – | – | -40 °C up to +105 °C | – | – | – | 7.05 | – | – | – | – | – | – | – | – | THT | – | -40 °C up to +105 °C | – | – | 3.5 | – | 2 | – | – | – | Horizontal | 10 | Box | |
 | 744373240010 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LHMI SMT Power Inductor | – | – | – | – | – | – | – | 4020 | -40 °C up to +125 °C | – | – | – | 4.45 | 4.06 | – | 0.1 | 16.5 | 20.9 | 37.6 | 4 | 323 | SMT | – | -40 °C up to +125 °C | – | – | – | – | 2 | – | 1.8 | – | – | – | – | ||
 | 860080675015 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-ATLI Aluminum Electrolytic Capacitors | – | – | – | – | 220 µF | ±20% | 50 | – | – | 8 | – | – | 16 | – | – | – | – | – | – | – | – | – | 5000 | -55 °C up to +105 °C | 1385 | 110 | 5 | 10 | – | – | – | – | – | – | Ammopack | ||
 | 885012205055 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | 100 pF | ±10% | 50 | 0402 | -55 °C up to +125 °C | 2.5 | 10 GΩ | X7R Class II | 1 | 0.5 | 0.25 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.5 | – | – | – | 7" Tape & Reel | ||
 | 61300211121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | 1000 MΩ | – | 5.08 | – | – | – | – | – | – | – | – | THT | – | – | – | – | 2.54 | – | 2 | Single | – | Pin Header | Straight | 3 | Bag | |
| 750318773 | SPEC | – | – | Active i| Production is active. Expected lifetime: >10 years. | Flyback Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 691214110002 | SPEC | – |
| 744373240010 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | |
| 860080675015 | SPEC | |
| 885012205055 | SPEC | |
| 61300211121 | SPEC | – |
| 750318773 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Application | PCB/Cable/Panel | Modularity | Wire Section | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Mount | Endurance (h) | Operating Temperature | IRIPPLE (mA) | ILeak (µA) | Pitch (mm) | Ø D (mm) | Pins (Value) (pcs) | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Samples |
|---|