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Overview
| Topology | Buck-Boost Converter |
| Input voltage | 9-55 V |
| Output 1 | 12 V / 6 A |
Description
Demonstration circuit 2931A is a buck-boost regulatorfeaturing the LTC®7878. The DC2931A operates from a 9V to 55V input voltage range and generates a 12V, 6A output. The LTC7878 has a precision voltage reference that can generate an output voltage with 1% tolerance over the full operating conditions. The 260kHz switching frequency operation results in a small and efficient circuit. The converter achieves over 97% efficiency with 6A load.The demonstration circuit can be easily modified to regulate output voltages from 1V to 70V.The DC2931A provides a high-performance, cost-effective solution for generating a 12V output. The LTC7878 data sheet gives a complete description of this part, its operation, and application information. Refer to it in conjunction with this demo manual.
Features
- Single Inductor Architecture Allows VIN Above, Below or Equal to the Regulated VOUT
- Synchronous Rectification: Up to 98% Efficiency
- Wide VIN Voltage Range: 5V to 70V
- ±1% Output Voltage Accuracy: 1V ≤ VOUT ≤ 70V n DCR or RSENSE Current Sensing
- Peak Current Mode Control in Buck/Boost/BuckBoost Mode
- Programmable Input or Output Current Regulation n 7V NMOS Gate Drivers
- Phase-Lockable Frequency (100kHz to 600kHz)
- Multiphase/Multi-ICs Parallel Operation
- Selectable Continuous or Pulse-Skipping Mode Operation and Inductor Peak Current Limits
- Small 32-Lead 5mm × 5mm QFN Package
Typical applications
- Distributed DC Power or Battery Systems
- Industrial and Telecom Systems
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Wire Type | Pins (pcs) | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 885012206046 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 16 V(DC) | 100 nF | ±10% | 16 | 0603 | -55 °C up to +125 °C | 3.5 | 5 GΩ | X7R Class II | 1.6 | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | ||
 | 7443630420 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCF SMT High Current Inductor | – | – | – | 2013 | -40 °C up to +125 °C | – | – | – | 20.8 | 20.5 | – | 4.2 | 27 | 34 | 38 | 3.34 | 24 | Flat | 2 | – | 13.5 | – | – | 24 | – | ||
 | 60800213421 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.00 mm Jumper with Test Point | – | – | – | – | -25 °C up to +105 °C | – | 1000 MΩ | – | – | – | – | – | – | – | – | – | – | – | 2 | – | – | Jumper | – | 3 | Bag | |
 | 62000311121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.00 mm THT Pin Header | – | – | – | – | -40 °C up to +105 °C | – | 1000 MΩ | – | 6 | – | – | – | – | – | – | – | – | – | 3 | Single | – | Pin Header | Straight | 2 | Bag |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 885012206046 | SPEC | |
| 7443630420 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | |
| 60800213421 | SPEC | – |
| 62000311121 | SPEC | – |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Wire Type | Pins (pcs) | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Samples |
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