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Texas Instruments LM5018 | Demoboard PMP21867
12-V / 100-A negative-to-positive synchronous buck-boost reference design for power amplifiers
Overview
| Topology | Buck-Boost Converter |
| Input voltage | -60 - -36 V |
| Output 1 | 14.5 V / 100 A |
| IC revision | 001 |
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 +12 V at 100 A. The design uses two dual synchronous boost controllers for 4-phase operation at a switching frequency of 100 kHz. Output voltage adjustment to +14.5 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
- Mounting option for bottom-side heat sink
- 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, 6.8 µH, 34.95 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCF SMT High Current Inductor | Inductance6.8 µH | Performance Rated Current34.95 A | Saturation Current @ 10%49.8 A | Saturation Current @ 30%55 A | DC Resistance2.64 mΩ | Self Resonant Frequency17 MHz | Wire TypeFlat |