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Texas Instruments LM5018MRX/NOPB | Demoboard PMP21943
48-V / 25-A negative-to-positive synchronous buck-boost reference design for power amplifiers
Overview
| Topology | Boost Converter |
| Input voltage | -48 V |
| Output 1 | 48 V / 25 A |
| IC revision | A |
Description
This reference design is a negative- to-positive synchronous buck-boost converter for power amplifier applications. The circuit is powered from the nominal -48 V system source to provide an output voltage of +48 V at 25 A. The design uses two dual synchronous boost controllers for 4-phase operation at a switching frequency of 150 kHz. Output voltage adjustment to +30 V is jumper selectable. 1 through 4 phase operation is also jumper selectable.
Features
- Non-isolated inverting solution for higher power
- Excellent phase current sharing for balanced thermal performance
- Jumper selectable phase control
- Compact design for minimum solution size
- Jumper selectable output voltage control
Typical applications
- Active antenna system mMIMO (AAS)
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 7443641500 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCF SMT High Current Inductor | 15 | 34.95 | 22 | 26 | 2.64 | 11 |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 7443641500 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Samples |
|---|