Analog Devices (ADI) has introduced a high-efficiency multiphase synchronous automotive boost controller that reduces solution cost and Class-D audio amplifier space by up to 36 percent with programmable current-limit blanking time.

ADI announced on the 21st the 'MAX25203', a high-efficiency multiphase synchronous boost controller that controls high-power Class D amplifiers in automotive infotainment systems.

The MAX25201 and MAX25202 single/dual boost controllers are new additions to ADI's automotive boost controller family, designed for low-power applications.

The MAX25203 features programmable gate drive voltage and current limit blanking times, as well as accurate current balancing, and operates at high switching frequencies to reduce bill of materials and PCB space by up to 36 percent.

Factory-programmable gate drive voltages range from 5.5 V to 10 V, reducing MOSFET Rdson losses for high efficiency and cost savings.

Programmable current limit blanking time reduces solution cost by supporting short peak current events without overdesigning the power supply.

It also improves EMI and eliminates external components with programmable resistor switching frequency up to 2.1 MHz.Reduces the size and number of nodes.

The MAX25203 controller operates from a battery input voltage of 4.5V to 42V and then operates until the input voltage drops to 1.8V.

It features an absolute maximum output voltage (AMR) of up to 70 V and a low shutdown current of 5 μA.

Utilized for backlight and Class D audio amplifier voltages, the MA25203 enhances system reliability with I2C bus diagnostics including die temperature, phase current monitoring, and optional full shutdown.

The output voltage can be adjusted via PWM input or I2C interface, and the sync-out function supports additional phases for high-power systems.

+/- 5 percent phase-to-phase current sharing accuracy allows for reduced inductor size.

More information about the MAX25203 can be found on our website.