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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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 744301033 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCM SMT High Current Flat Wire Inductor | 330 | 56 | 44.9 | 48.9 | – | 28 | – | 325 | 38 | 0.32 | MnZn | ||
 | 744308040 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCM SMT High Current Flat Wire Inductor | 400 | 54.3 | 23.8 | 28.3 | – | 25 | – | 345 | 25 | 0.37 | MnZn | ||
 | 7443641000 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCF SMT High Current Inductor | 10000 | 34.95 | 32.6 | 37 | 2.64 | 13 | Flat | 9500 | 35 | 2.4 | MnZn | ||
| 7443642200 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCF SMT High Current Inductor | 22000 | 34.95 | 15.5 | 18 | 2.64 | 9 | Flat | 5000 | 35 | 2.4 | MnZn |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 744301033 | SPEC | |
| 744308040 | SPEC | |
| 7443641000 | SPEC | |
| 7443642200 | SPEC |
| Samples |
|---|
| 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 |
|---|
