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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 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. | 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 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. | |
| 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 |
|---|