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Overview
| Topology | Boost Converter |
| Input voltage | 8-36 V |
| Switching frequency | 100-3000 kHz |
| Output 1 | 48.3 V / 18 A |
Description
The evaluation circuit EVAL-LTC7893-AZ is a single output synchronous step-up converter that drives GaN field effect transistors (FETs). The EVAL-LTC7893-AZ evaluation board features 100V GaN FETs.The EVAL-LTC7893-AZ features the LTC®7893: a low quiescent current, high frequency (programmable fixed frequency from 100kHz up to 3MHz), step-up DC/DC synchronous controller, with a dedicated driver feature for GaN FETs, which can also be used to drive logic-level silicon FETs.The EVAL-LTC7893-AZ operates over an input voltage range from 8V to 36V and produces a 48V output with load current up to 18A (without heatsink). A mode selector allows the EVAL-LTC7893-AZ to operate in forced continuous operation, pulse-skipping or Burst Mode® operation during light loads. The EVAL-LTC7893-AZ is set to 500kHz switching frequency, which results in a small and efficient circuit.
Features
GaN Drive Technology Fully Optimized for GaN FETsOutput Voltage Up to 100VWide VIN Range: 4V to 60V and Operates Down to 1V after Start-UpNo Catch, Clamp, or Bootstrap Diodes NeededInternal Smart Bootstrap Switches Prevent Overcharging of High-Side Driver SupplyResistor-Adjustable Dead TimesSplit-Output Gate Drivers for Adjustable Turn On and Turn Off Driver StrengthsAccurate Adjustable Driver Voltage and UVLOLow Operating IQ: 15μAProgrammable Frequency (100kHz to 3MHz)Synchronizable Frequency (100kHz to 3MHz)Spread Spectrum Frequency Modulation28-Lead (4mm × 5mm), Side Wettable, QFN PackageAEC-Q100 Qualified for Automotive Applications
Typical applications
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) | L (mm) | Ti | Ø OD (mm) | Ø ID (mm) | Qty. | Pins (Value) (pcs) | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 7443630310 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCF SMT High Current Inductor | 3.1 | 33.15 | 41 | 45 | 2.3 | 29 | 20.8 | – | – | – | 100 | 2 | – | 13.5 | – | – | 33.1 | – | ||
 | 9774010243R | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WA-SMSI SMT Steel Spacer with internal Thread M2 | – | – | – | – | – | – | 1 | M2 | 4.35 | 2.8 | 1500 | – | – | – | – | – | – | Tape and Reel | |
 | 62000621121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.00 mm THT Dual Pin Header | – | – | – | – | – | – | 6 | – | – | – | 1000 | 6 | Dual | – | Pin Header | Straight | 2 | Bag |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 7443630310 | SPEC | |
| 9774010243R | SPEC | – |
| 62000621121 | SPEC | – |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | L (mm) | Ti | Ø OD (mm) | Ø ID (mm) | Qty. | Pins (Value) (pcs) | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Samples |
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