Analog Devices Inc. LT8705/4 스위치 벅 부스트 DC/DC 컨트롤러
Linear Technology/Analog Devices LT8705/A 4 스위치 벅 부스트 DC/DC 컨트롤러는 고성능이며 출력 전압 위, 아래 또는 동등 수준의 입력 전압에서 작동합니다. LT8705/A에는 입력 전류, 입력 전압, 출력 전류 및 출력 전압 피드백 루프가 통합되어 있습니다. LT8705/A는 대부분의 태양광, 자동차, 전기 통신 및 배터리 구동식 시스템과 호환됩니다. 이 컨트롤러는 폭넓은 2.8V~80V의 입력 범위와 1.3V~80V의 출력 범위를 제공합니다.
The Analog Devices LT8705A includes a MODE pin to select among Burst Mode® operation, discontinuous or continuous conduction mode at light loads. Additional features include a 3.3V/12mA LDO, a synchronizable fixed operating frequency, and onboard gate drivers.
특징
- Single inductor allows VIN above, below, or equal to regulated VOUT
- VIN range 2.8V (need EXTVCC > 6.4V) to 80V
- 1.3V to 80V VOUT range
- Quad N-channel MOSFET gate drivers
- Up to 98% efficiency for synchronous rectification
- Input and output current monitor pins
- Integrated input current, input voltage, output current, and output voltage feedback loops
- 100kHz to 400kHz synchronizable fixed frequency
- Clock output usable to monitor die temperature
- Available in 38-lead (5mm × 7mm) QFN and TSSOP
- Packages with the TSSOP modified for improved high voltage operation
애플리케이션
- High voltage buck-boost converters
- Input or output current limited converters
Additional Resources
Eliminate Switching Noise with 4-Switch Buck-Boost Controller with Pass-Thru Capability
There are several dc-to-dc converter topologies that can perform both step-up and step-down operations, from SEPIC to 4-switch topologies, but none of these solutions pass the input voltage directly to the output without actively switching — until now, that is.
Typical Application
게시일: 2017-04-26
| 갱신일: 2022-03-11