The MAX17558 is a dual-output, synchronous step-down controller that drives nMOSFETs. The device features a peak-current-mode, constant-frequency architecture, allowing it to operate up to 2.2MHz. The device can be configured as two single-phase, independent 10A power supplies or as a dual-phase, single-output 20A power supply. The device also provides the ability to run two controllers 180° out-ofphase to reduce the power loss and noise due to the input-capacitor ESR. The IC supports current sensing using either an external current-sense resistor for accuracy or an inductor DCR for improved system efficiency. Current foldback limits MOSFET power dissipation under short-circuit conditions. The IC provides independent adjustable soft-start for each output and can start up monotonically into a prebiased output. The IC can be configured in either PWM or DCM modes of operation, depending on whether constant-frequency operation or light-load efficiency is desired. The IC operates over the -40°C to +125°C temperature range and is available in a lead(Pb)-free, 32-pin TQFN, 5mm x 5mm package with an exposed pad. Applications * Computerized Numerical Control * Distributed DC Power Systems * Industrial Power Supplies * Motion Control * Programmable Logic Controllers * Wide Range of Operation * Wide 4.5V to 60V Input Voltage Range * Wide 0.8V to 24V Output Voltage Range * RSENSE or Inductor DCR Current-Sensing * Selectable In-Phase or 180° Out-of-Phase Operation * Adjustable 100kHz to 2.2MHz Switching Frequency * Independent Enable and PGOOD * Available in a Lead(Pb)-Free 32-Pin, 5mm x 5mm TQFN-EP Package * Enhances Power Efficiency * Low Impedance Gate Drives for High Efficiency * DCM Operation at Light Loads * Auxiliary Bootstrap LDO * Operates Reliably in Adverse Industrial Environments * Independent Adjustable Soft-Start or Tracking * Current Foldback Limits MOSFET Heat Dissipation During a Short-Circuit Condition * Operates Over the -40°C to +125°C Temperature Range * Output Overvoltage and Overtemperature Protections https://elecena.pl/product/22318919/60v-dual-output-synchronous-step-down-controller 2022-12-27 https://elecena.pl/product/22318919/60v-dual-output-synchronous-step-down-controller 2024-11-03 https://elecena.pl/product/22318919/60v-dual-output-synchronous-step-down-controller 2024-11-09 https://elecena.pl/product/22318919/60v-dual-output-synchronous-step-down-controller 2025-01-19