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Analog Devices LT8210 | Demoboard DC2814A-C
100V VIN and VOUT Synchronous 4-Switch Buck‑Boost DC/DC Controller with PassThrug
Overview
| Topology | Buck-Boost Converter |
| Input voltage | 26-80 V |
| Switching frequency | 80-400 kHz |
| Output 1 | 56 V / 2 A |
Description
The LT8210 is a 4-switch synchronous buck-boost DC/DC controller that can operate in passthru, forced continuous, pulse-skipping and Burst Mode® operation. PassThru is a feature that passes the input directly to the output when the input is within a user programmable window. PassThru mode eliminates switching losses and EMI along with maximizing efficiency. For input voltages above or below the passthru window, the buck or boost regulation loops maintain the output at the set maximum or minimum values, respectively.The GATEVCC driver supply is regulated to 10.6V allowing the use of standard-level MOSFETs and can be powered through the EXTVCC pin for improved efficiency. The GATEVCC regulator is back-drive-protected to ride through input brownouts while maintaining regulation. Optional reverse input protection down to –40V can be implemented with the addition of a single N-channel MOSFET. The LT8210 includes a precision current sense amplifier that can accurately monitor and limit output or input average current.
Features
- Pin-Selectable PassThru or Fixed Output CCM, DCM, Burst Mode® Operation
- Programmable Non-Switching PassThru Window
- 18μA PassThru Mode IQ with 99.9% Efficiency
- VIN Range: 2.8V to 100V (4.5V for Start-Up)
- VOUT Range: 1V to 100V
- Reverse Input Protection to –40V
- ±1.25% Output Voltage Accuracy (–40°C to 125°C)
- ±3% Accurate Current Monitoring
- ±5% Accurate Current Regulation
- 10V Quad N-Channel MOSFET Gate Drivers
- EXTVCC LDO Powers Drivers from VOUT/External Rail
- ±20% Cycle-by-Cycle Inductor Current Limit
- No Top MOSFET Refresh Noise in Buck or Boost
- Fixed/Phase-Lockable Frequency: 80kHz to 400kHz
- Spread Spectrum Frequency Modulation for Low EMI
- Power Good Output Voltage/Overcurrent Monitor
- Available in a 38-Lead TSSOP and 40-Lead (6mm x 6mm) QFN Packages
Typical applications
- Automotive, Industrial, Telecom, Avionics Systems, Automotive Start-Stop, Emergency Call Applications
- ISO 7637, ISO 16750, MIL-1275, DO-160 Applications
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IR(A) | ISAT(A) | fres(MHz) | Mount | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | Material | Qty. | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR 2(mA) | RDC max.(mΩ) | Type | SamplesAvailability & Sample | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | SPECWE-HCI SMT Flat Wire High Current Inductor, 3.3 µH, – | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance3.3 µH | – | – | Self Resonant Frequency65 MHz | MountSMT | Performance Rated Current10.9 A | Saturation Current @ 10%3.2 A | Saturation Current @ 30%8 A | DC Resistance9 mΩ | MaterialSuperflux | Packaging Unit1000 | – | – | – | – | DC Resistance9.9 mΩ | – | –Check availability | |||
 | SPECWE-CHSA SMT High Current Inductor, 12 µH, 7.1 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CHSA SMT High Current Inductor | Inductance12 µH | Rated Current7.1 A | Saturation Current10.3 A | Self Resonant Frequency28 MHz | MountSMT | – | – | – | – | – | Packaging Unit200 | – | – | – | – | DC Resistance21.5 mΩ | – | –Check availability | |||
 | SPECWE-CBF SMT EMI Suppression Ferrite Bead, –, 1.5 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | – | Rated Current1.5 A | – | – | MountSMT | – | – | – | – | – | Packaging Unit3000 | Impedance @ 100 MHz600 Ω | Maximum Impedance650 Ω | Maximum Impedance80 MHz | Rated Current 22500 mA | DC Resistance70 mΩ | TypeHigh Current | –Check availability |
Availability Forecast
WE item number Packaging unitsLead time
––– weeks
| Expected Availability | Opening inventory | Quantity |
|---|---|---|
| Current Availability | – | – |
There is no forecast for this quantity request.
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