MP4572 High-Efficiency, 2A, 60V, Fully Integrated Synchronous Buck Converter DESCRIPTION FEATURES The MP4572 is a fully integrated, fixed- Wide 4.5V to 60V Operating Input Range frequency, synchronous step-down converter. It 2A Continuous Output Current can achieve up to 2A of continuous output High-Efficiency Synchronous Mode Control current with peak current control for excellent 250m/45m Internal Power MOSFETs transient response. Configurable Frequency Up to 2.2MHz 180 Out-of-Phase SYNCO Clock The wide 4.5V to 60V input voltage range 40A Quiescent Current accommodates a variety of step-down Low Shutdown Mode Current: 2A applications in an automotive input environment. A 2A shutdown mode quiescent current makes FB Tolerance: 1% at Room Temp, 2% at the MP4572 ideal for battery-powered Full Temp applications. Selectable AAM or Forced CCM Operation at Light Load The MP4572 integrates internal high-side and Internal 0.45ms Soft Start low-side power MOSFETs for high efficiency Remote EN Control without an external Schottky diode. Power Good (PG) Indicator The device employs advanced asynchronous Low-Dropout Mode modulation (AAM), which achieves high efficiency Over-Current Protection (OCP) during light load by scaling down the frequency to Short-Circuit Protection with Hiccup Mode reduce the switching and gate driver losses. V Under-Voltage Lockout (UVLO) IN Standard protection features include built-in soft Thermal Shutdown start, enable control, and a power good Available in a QFN-12 (2.5mmx3mm) indicator. High duty cycle and low-dropout Package mode are provided for automotive cold crank APPLICATIONS conditions. In addition, the chip provides over- current protection with valley current detection, Automotive Infotainment which helps prevent current runaway. It also has Automotive Lamps and LEDs hiccup short-circuit protection (SCP), input under- Automotive Motor Control voltage lockout (UVLO), and auto-recovery Industrial Power Systems thermal protection. All MPS parts are lead-free, halogen-free, and adhere to the RoHS With internal compensation, the MP4572 offers directive. For MPS green status, please visit the MPS website under Quality Assurance. MPS, the MPS logo, and Simple, Easy Solutions are a very compact solution with a minimal number of trademarks of Monolithic Power Systems, Inc. or its subsidiaries. readily available standard external components. It is available in a QFN-12 (2.5mmx3mm) package. MP4572 Rev. 1.0 www.MonolithicPower.com 1 3/9/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved. MP4572 60V, 2A, SYNCHRONOUS STEP-DOWN CONVERTER TYPICAL APPLICATION Efficiency vs. Load Current 4.5V to 60V V = 5V, L = 15H, f = 400kHz, AAM OUT SW BST VIN IN 100 1.60 VIN=8V VIN=12V VIN=24V SW 90 1.40 GND GND VOUT VIN=36V Vin=48V VIN=60V MP4572 80 1.20 VCC FREQ 70 1.00 GND 60 0.80 EN FB EN 50 0.60 40 0.40 CCM/ PG SYNCO PG 30 0.20 20 0.00 1 10 100 1000 LOAD CURRENT (mA) MP4572 Rev. 1.0 www.MonolithicPower.com 2 3/9/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved. EFFICIENCY (%) POWER LOSS (W)