72V, 1A, Automotive Synchronous Step-Down DC-DC Converter

The MAX20059 is a high-efficiency, high-voltage, synchronous step-down DC-DC converter IC with integrated MOSFETs that operates over a 4.5V to 72V input. The converters can deliver up to 1A current. Output voltage is programmable from 0.8V to 90%VIN. The feedback voltage-regulation accuracy over -40&degC to +125°C is ±1.5%.

The IC features a peak-current-mode-control architecture and can be operated in the pulse-width modulation (PWM) or pulse-frequency modulation (PFM) control schemes.

The MAX20059 is available in a 12-pin (3mm x 3mm) side-wettable TDFN package with an exposed pad for thermal heat dissipation.

Applications

* 48V Systems * Mild Hybrid Applications

* Synchronous DC-DC Converters with Integrated FETs

* 72V Input for 48V Systems

* Internal Compensation

* Flexibility

* Output Adjustable from 0.8V to 90%VIN

* 200kHz to 2200kHz Adjustable Frequency with External Clock Synchronization

* Programmable Peak Current Limit (1.14A or 1.6A)

* Active-Low RESET Output and EN Input (26V max) Simplify Power Sequencing

* Protection Features and Operating Range Ideal for Automotive Applications

* Programmable EN/UVLO Threshold

* Adjustable Soft-Start and Prebiased Power-Up

* Thermal Shutdown

* -40&degC to +125&degC Automotive Temperature Range

* AEC-Q100 Qualified