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Analog Devices LTC7060 | Demoboard EVAL-LTC7872-AZ
EVAL-LTC7872-AZ User Guide: LTC7872/LTC7060 | 48V-to-14V, 4-phase, 1.7kW Bidirectional Supply
Overview
| Topology | Buck Converter |
| Input voltage | 30-75 V |
| Output 1 | 14 V / 120 A |
Description
The evaluation board EVAL-LTC7872-AZ is a high power, high efficiency, four-phase bidirectional converter featuring the LTC7872 and LTC7060. The terminals labeled VHIGH and VLOW are either inputs or outputs depending on the direction of power flow. When the switch SW1 is set to the BUCK position, VLOW provides a 14V output and VHIGH is the input with a range of 30V to 75V with a maximum load current of 120A. When the switch SW1 is in the BOOST position, VHIGH provides a 48V output and VLOW is the input with a range of 10V to 14V with a maximum load current of 34A at a 14V input voltage. The maximum ILOW current is 120A in both directions. The maximum output power is 1.7kW when operating as a buck within the input voltage range. When operating as a boost, the maximum output power is 1.6kW when the input voltage is 14V. External airflow is required when operating at maximum power in either direction of power flow. The MOSFETs in each phase are driven by the LTC7060 half-bridge driver.
Features
- SPI-Compatible Port
- Pin-Selectable, Light-Load Operating Modes
- Buck: FCM, DCM, and Burst Mode Operation
- Boost: FCM and DCM
- Optional Jumper to Enable Spread-Spectrum Modulation
- Footprints for Optional PG-HSOF-8-1 MOSFETs and Coupled Inductors
- Optional UVLO Circuits for VHIGH and VLOW
- SYNC, CLKOUT, RUN, FAULT, PGOOD, and PWMEN Pins
- A DC2026C Linduino Board and QuikEval Software
- Increasing or Decreasing the VLOW/VHIGH Regulation Voltage When SW1 Switch Is in Buck/Boost Position
- Changes to the DC Current Limit Using the SETCUR Pin
- Making Adjustments to the Frequency Spread and Modulation Rate of the Spread Spectrum Circuit When Spread Spectrum Is Enabled
- Monitoring the Operational Status and Faults of the LTC7872
Typical applications
- Automotive and Industrial Power Systems, Telecommunication Power Systems, Half-Bridge and Full-Bridge Converters
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(mm) | f(mm) | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | DF(%) | RISO | Ceramic Type | W(mm) | H(mm) | Fl(mm) | Packaging | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC max.(mΩ) | fres(MHz) | Wire Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 16 V(DC), 1.6 mm, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 16 V(DC) | Length1.6 mm | – | Capacitance100 nF | Capacitance±10% | Rated Voltage16 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor3.5 % | Insulation Resistance5 GΩ | Ceramic TypeX7R Class II | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | |||||
 | WA-SNSR Self-Retaining Spacer, 6.4 mm, 4.8 mm | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWA-SNSR Self-Retaining Spacer | Length6.4 mm | Drilling in Panel4.8 mm | – | – | – | – | Operating Temperature -30 °C up to +85 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |||
 | WE-HCF SMT High Current Inductor, 27 mm, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCF SMT High Current Inductor | Length27 mm | – | – | – | – | Size2818 | Operating Temperature -40 °C up to +125 °C | – | – | – | Width28 mm | Height18.5 mm | – | – | 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 |