EVQ4317-R-01A

EVQ4317-R-01A evaluation board is designed to demonstrate the capabilities of the MPQ4317, a synchronous, step-down switching regulator with a configurable frequency and integrated, internal high-side MOSFETs and low-side MOSFETs. It provides up to 7A of highly efficient output current, with current mode control for fast loop response. The wide 3.3V to 45V input voltage range accommodates a variety of step-down applications in automotive input environments. A 1.7µA quiescent current in shutdown mode allows the device to be used in battery-powered applications. High power conversion efficiency across a wide load range is achieved by scaling down the switching frequency under light-load conditions to reduce the switching and gate driver losses. Frequency foldback helps prevent inductor current runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation. The MPQ4317 is available in a QFN-20 (4mmx4mm) wettable flank package, and is AEC-Q100 Grade 1 qualified.

• 18μA sleep mode quiescent current
• Internal 48mohm high-side MOSFET and 20mohm low-side MOSFET
• 350kHz to 1000kHz configurable switching frequency for car battery applications
• Synchronizable with external clock
• Out-of-phase synchronized clock output
• Fixed output options: 3.3V, 5V
• Frequency Spread Spectrum (FSS) for low EMI
• Symmetric VIN for low EMI
• Power good (PG) output, external soft start (SS), 100ns minimum on time
• Selectable advanced asynchronous modulation (AAM) mode or forced continuous conduction mode (FCCM)