DC/DC converters integrate 50V, 2A internal switches
1 min read
Linear Technology has announced the LT8471, a dual DC/DC converter that utilises two internal 2A, 50V switches and an additional 500mA switch to facilitate step-down, step-up and inverting conversions.
Each 2A channel can be independently configured as a buck, boost, SEPIC, flyback, ZETA or inverting DC/DC converter. The LT8471 operates from an input voltage range of 2.6 to 50V, making it suitable for applications with input sources ranging from a single-cell Li-ion to automotive batteries.
The converter's 50V internal switches can accommodate applications with inputs and outputs as high as 45V. The device is capable of generating both positive and negative outputs from a single converter. A small, integrated 500mA boost converter facilitates both buck and single inductor inverting applications at optimal efficiencies.
The LT8471's switching frequency is programmable and synchronisable from 100kHz to 2MHz, which keeps externals very small. Efficiencies of up to 85% are possible for buck and inverting applications.
From a 6 to 32V input, the LT8471 delivers up to 1.5A at 5V and 650mA at -5V. A power good pin on each channel is offered for ease of use when event based sequencing is required.
The LT8471's switching frequency can be programmed via a single resistor or synchronized to an external clock between 100kHz and 2MHz, minimising external component size and avoiding noise critical frequency bands.
