Analog Devices LTC7821EUH#PBF Hybrid Step-Down Synchronous Controllers feature a proprietary architecture that combines a soft-switching charge pump topology with a synchronous step-down converter to offer exceptional efficiency and EMI performance compared to traditional switching architectures. The LTC7821EUH#PBF Hybrid Controllers operate with a 3x higher switching frequency, can achieve up to a 3% higher efficiency, and reduce the DC-DC converter solution size up to 50% compared to traditional step-down solutions. In addition, the LTC7821EUH#PBF Hybrid Controllers have low EMI and reduced MOSFET stress due to a soft-switched front end. The LTC7821EUH#PBF Hybrid Controllers are ideally suited for next-generation non-isolated intermediate bus applications in power distribution, datacom and, telecom as well as emerging 48V automotive systems.
Feature
- Wide VIN Range: 10V to 72V (80V ABS Max)
- Soft Switching for Low Noise Operation
- Phase-Lockable Fixed Frequency 200kHz to 1.5MHz
- ±1% Output Voltage Accuracy
- RSENSE or DCR Current Sensing
- Programmable CCM, DCM, or Burst Mode® Operation
- CLKOUT Pin for Multiphase Operation
- Short Circuit Protected
- EXTVCC Input for Improved Efficiency
- Monotonic Output Voltage Start-Up
- Optional External Reference
- 32-Pin (5mm × 5mm) QFN
Applications
- Intermediate Bus Converters
- High Current Distributed Power Systems
- Telecom, Datacom, and Storage Systems
