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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) | Wire Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCF SMT High Current Inductor, 15 µH, 34.95 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCF SMT High Current Inductor | Inductance15 µH | Performance Rated Current34.95 A | Saturation Current @ 10%22 A | Saturation Current @ 30%26 A | DC Resistance2.64 mΩ | Self Resonant Frequency11 MHz | Wire TypeFlat |