概览
描述
The ISL8215MEVAL1Z evaluation board features the ISL8215M 15A 42V single-channel DC/DC step-down power module. The ISL8215M is a single channel synchronous step-down power supply, capable of delivering up to 15A of continuous current and optimized for high power density applications without the need for airflow or heatsink.
The ISL8215MEVAL1Z evaluation board is a 1.8in x 3in 4-layer FR4 board with 2oz. copper on all layers. Operating from a single 7V to 42V wide input power rail, the ISL8215MEVAL1Z evaluation board offers adjustable output voltages down to 0.6V and efficiencies of up to 96.5%. It is based on a valley current mode PWM control scheme with VIN feed forward, which provides a fast transient response and excellent loop stability. The ISL8215MEVAL1Z is designed to program switching frequencies up to 2MHz, with the additional option of synchronizing to an external clock through the SYNC pin. A selectable pulse skipping mode (PSM) with diode emulation mode (DEM) can be enabled easily to improve light-load efficiency for battery-related applications. The evaluation board also features output voltage tracking which can be implemented through the SS/TRK pin.
By default, the board is set to a 3.3V output voltage with a 300kHz switching frequency.
特性
- Wide input voltage range from 7V to 42V
- Adjustable output voltage from 0.6V to 12V with ±1.5% accuracy over line, load, and temperature
- Up to 96.5% conversion efficiency
- High light-load efficiency with pulse skipping DEM operation
- Programmable soft-start with output voltage tracking
- Prebias output start-up
- External frequency synchronization up to 1MHz
- Dedicated enable pin and power-good (PGOOD) indicator
- UVLO, programmable overcurrent, overvoltage, and over-temperature
- Thermally enhanced 19mm x 13mm x 5.3mm HDA package
