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Texas Instruments UCC21225 | Demoboard PMP23332
Interleaved and multiphase inverting buck-boost converter reference design
Overview
| Topology | Boost Converter |
| Input voltage | -62 - -36 V |
| Output 1 | 52 V / 14 A |
| IC revision | A |
Description
This reference design uses the UCD3138064A as a digital controller to control inverting buck-boost with the capability of supporting two-phase peak current mode control. The soft-switching technology is used in this design to improve the power efficiency. The input voltage range is -62 V to -36 V. The output voltage range is adjustable from 28 V to 52 V. The default output voltage is 48-V with a maximum current of 14 A.
Features
- High efficiency above 97.1%
- Interleaved two-phase peak current mode (PCM) control
- Three phases with voltage mode (VM) control
- Zero voltage switching of MOSFETs
- Pre-biased start up
- Current balancing between phases
Typical applications
- Non-isolated battery backup unit
- Transformer-based DC/DC converter (100W~400W)
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(nH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC max.(mΩ) | fres(MHz) | Wire Type | LR(nH) | IR(A) | RDC(mΩ) | Material | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCM SMT High Current Flat Wire Inductor, 330 nH, 56 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCM SMT High Current Flat Wire Inductor | Inductance330 nH | Performance Rated Current56 A | Saturation Current @ 10%44.9 A | Saturation Current @ 30%48.9 A | – | Self Resonant Frequency28 MHz | – | Rated Inductance325 nH | Rated Current38 A | DC Resistance0.32 mΩ | MaterialMnZn | ||||
 | WE-HCM SMT High Current Flat Wire Inductor, 400 nH, 54.3 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCM SMT High Current Flat Wire Inductor | Inductance400 nH | Performance Rated Current54.3 A | Saturation Current @ 10%23.8 A | Saturation Current @ 30%28.3 A | – | Self Resonant Frequency25 MHz | – | Rated Inductance345 nH | Rated Current25 A | DC Resistance0.37 mΩ | MaterialMnZn | ||||
 | WE-HCF SMT High Current Inductor, 10000 nH, 34.95 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCF SMT High Current Inductor | Inductance10000 nH | Performance Rated Current34.95 A | Saturation Current @ 10%32.6 A | Saturation Current @ 30%37 A | DC Resistance2.64 mΩ | Self Resonant Frequency13 MHz | Wire TypeFlat | Rated Inductance9500 nH | Rated Current35 A | DC Resistance2.4 mΩ | MaterialMnZn | ||||
| WE-HCF SMT High Current Inductor, 22000 nH, 34.95 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCF SMT High Current Inductor | Inductance22000 nH | Performance Rated Current34.95 A | Saturation Current @ 10%15.5 A | Saturation Current @ 30%18 A | DC Resistance2.64 mΩ | Self Resonant Frequency9 MHz | Wire TypeFlat | Rated Inductance5000 nH | Rated Current35 A | DC Resistance2.4 mΩ | MaterialMnZn |