EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX20412 Automotive Low-Voltage, 2-Channel Step-Down Controller General Description Benefits and Features The MAX20412 is a dual-output, high-efficiency, synchro- 2-Channel, High-Efficiency DC-DC Controller in a nous step-down controller IC that operates with a 3.0V to Small Solution Size 5.5V input voltage range and provides a 0.25V to 1.275V 3.0V to 5.5V Operating Supply Voltage output voltage range. The controller architecture enables OUT1 Supports 60A (with Two Phases) up to 30A of load current per phase. Channel one has an OUT2 Supports 30A option to operate with two phases to deliver higher load High-Precision Regulator for Applications Processors current, making this device ideal for automotive point-of- 2% Output-Voltage Accuracy load (PoL) and post-regulation applications. Differential Remote-Voltage Sensing 2 I C-Controlled Output Voltage: 0.25V to 1.275V in The IC achieves 2% output error over load, line, and 6.25mV Steps temperature ranges. The IC features a 2.2MHz/1.1MHz Excellent Load-Transient Performance fixed-frequency PWM mode for better noise immunity Programmable Compensation and load-transient response, and a pulse-frequency modulation mode (skip) for increased efficiency during Low-Noise Features Reduce EMI light-load operation. The 2.2MHz frequency operation 2.2MHz or 1.1MHz Operation allows the use of all-ceramic capacitors and minimizes Spread-Spectrum Option external components. The programmable spread-spectrum Frequency-Synchronization Input/Output frequency modulation minimizes radiated electromagnetic Current-Mode, Forced-PWM, and Skip Operation emissions. Robust for the Automotive Environment The MAX20412 is offered with factory-preset output Individual Enable Inputs and PGOOD Outputs 2 Low R External MOSFETs voltages (see the Selector Guide for options). The I C DS(ON) interface supports dynamic voltage adjustment with pro- Overtemperature and Short-Circuit Protection 32-Pin (5mm x 5mm) TQFN with Exposed Pad grammable slew rates for each channel. Other features -40C to +125C Operating Temperature Range include programmable soft-start, overcurrent, and over- AECQ-100 Qualified temperature protections. Applications Ordering Information appears at end of data sheet. Automotive 19-100339 Rev 4 2/20MAX20412 Automotive Low-Voltage, 2-Channel Step-Down Controller Typical Operating Circuit ND OPTIONAL 2 PHASE VSUP MAX15492B 5V 4 x 10F 0 VSUP VDD DH1 BST 0.1 BST1 80nH 4 x 10F GND V OUT1 DH 0.1 LX1 80nH PWM PWM1X V OUT1 LX DL1 3.48k 4.75k 5V 3.48k 4 x 47F DL SKIP CS1+ 4.75k 15n CS1- 15n RS1+ CS1X+ 6 x 47F RS1- VSUP MAX20412 4 x 10F DH2 VSUP PV, PV2 0.1 1F BST2 EN1, EN2 80nH V OUT2 2k PGND1, PGND2 LX2 /2 SCL, SDA 3.48k DL2 VSUP PV 4.75k 1F 10 GND CS2+ 15n CS2- SYNC 20k RS2+ 6 x 47F RS2- /2 PG1, PG2 Maxim Integrated 2 www.maximintegrated.com