ADI Launches High-Efficiency Single-Inductor Synchronous Buck-Boost Controller
Published2017.09.06 17:09
Analog Devices announced the launch of LTC3779, a new high-efficiency (up to 99%) 4-switch single-inductor synchronous buck-boost DC/DC controller that operates when the input voltage is lower than, higher than, or equal to the regulated output voltage.
Designed with an input voltage range of 4.5V to 150V to operate from high input voltage sources or high input surge conditions, it features no need for external surge suppression devices and is ideal for transportation, industrial, and military applications.
Output voltage can be set within the range of 1.2V to 150V, and depending on external component selection, it can supply output current of 10A or more. The LTC3779's robust 1.3Ω N-channel MOSFET gate driver is adjustable from 6V to 10V, allowing the use of logic-level or standard-threshold MOSFETs.
The LTC3779 includes an NDRV pin to prevent significant on-chip power consumption in high input voltage applications. This pin drives the gate of an optional external N-channel MOSFET that functions as a low-dropout linear regulator to supply IC bias power. Additionally, the LTC3779 can be powered up to 36V through the EXTVCC pin from the output of a switching regulator or other available sources, reducing power consumption and improving efficiency.
The LTC3779 can deliver up to 500W of output power as a single device. When multiple circuits are configured in parallel, higher output power can be provided. Operating frequency can be selected between 50kHz and 600kHz, and external clock synchronization is possible for the same range. The LTC3779 employs a proprietary current-mode control architecture for fixed-frequency operation in buck or boost mode. Users can select between forced continuous mode or discontinuous mode to maximize light-load efficiency.
Related news
ADI Launches Step-up DC/DC Converter with Built-in 60V Switch
Analog Devices has announced the launch of LT8362, a new current mode 2MHz step-up DC/DC converter with integrated 2A, 60V switch. The new product operates in an input voltage range of 2.8V to 60V and can be utilized in applications using a variety of input power supplies, ranging from single-cell lithium-ion batteries to automotive and industrial inputs. The LT8362 can be configured as a boost, SEPIC, or inverting converter. The switching frequency is programmable between 300kHz and 2MHz, enabling designers to minimize the size of external components and avoid critical frequency bands such as AM radio. It delivers conversion efficiency of over 90% at a switching frequency of 2MHz.
2017.08.22by 김지혜 기자
ADI Launches GaN Power Amplifier with Maximum Power Density Level
Analog Devices (ADI) has launched two high-performance gallium nitride (GaN) power amplifier modules. These products boast the highest power density level compared to competing power amplifiers in the same class, thereby minimizing the size and weight of subsystems. The two broadband modules introduced this time, HMC7885 and HMC7748, have been developed for applications operating in the 2GHz to 6GHz frequency range, including test and measurement, communications, traveling wave tube (TWT) replacement, military/aerospace surveillance and countermeasures, and radar. ADI has expanded its existing portfolio of GaN-based power amplifier products through these fully integrated and fully solid-state devices, enabling designers to reduce prototyping and system design time through ease of use.
2017.08.24by 김지혜 기자
ADI Launches Digital Signal Processor to Support Automotive Audio Algorithms
Analog Devices (ADI) has launched four fixed-point digital signal processors (DSPs) for automotive applications. The ADAU1466 and ADAU1467 SigmaDSP processors are designed to address the growing demand for new and advanced audio algorithms, delivering industry-leading fixed-point DSP performance by increasing internal program memory by 3x and internal data memory by 2x compared to existing products. The ADAU1463 and ADAU1467 utilize 88-pin LFCSP packaging and also provide eight pins that can be configured for serial data input or output. This significantly increases design flexibility in amplifier or head unit applications and enables support for applications such as hands-free, active noise control, and acoustic noise reduction.
2017.09.04by 김지혜 기자
Intel Unveils Next-Generation 'Core Ultra Series 3' and vPro Platform for Enterprise PCs
Intel has officially unveiled the "Intel Core Ultra Series 3" for next-generation enterprise PCs and the latest vPro platform, addressing a wide range of demands from enterprise notebooks to high-performance workstations.
2026.03.26by 배종인 기자
ROHM Launches ESD Protection Diode Compatible with High-Speed Interfaces of 10Gbps or Higher
Semiconductor specialist ROHM has developed the 'RESDxVx series' of ESD (electrostatic discharge) protection diodes capable of responding to next-generation high-speed data communication environments exceeding 10Gbps, simultaneously enhancing both signal quality maintenance required in high-speed interfaces and IC protection performance.
2026.03.26by 배종인 기자
