|Input Type||VIN (MIN)
The MAX17509 integrates two 3A internal switch stepdown regulators with programmable features. The device can be configured as two single-phase 3A power supplies or as one dual-phase, single-output 6A power supply. It operates from a 4.5V to 16V input and generates independently adjustable output voltage in the ranges of 0.904V to 3.782V and 4.756V to 5.048V, with ±2% system accuracy. This device provides maximum flexibility to the end-user by allowing to choose multiple programmable options by connecting resistors to the configuration pins. Two key highlights of the device are the self-configured compensation for any output voltage and the ability to program the slew rate of LX switching nodes to mitigate noise and EMI concerns. Noise-sensitive applications, such as high-speed multi-gigabit transceivers in FPGAs, RF, and audio applications, can benefit from this unique slew-rate control. SYNC input is provided for synchronized operation of multiple devices with system clocks.
The MAX17509 offers output overvoltage (OV) and undervoltage (UV) protection, as well as overcurrent (OC) and undercurrent (UC) protection with a selectable hiccup/latch option.
A dual-phase buck converter using MAX17509 is demonstrated for a 1.1V DC output application. The power supply delivers up to 6A at 1.1 V. Table 1 shows an overview of the design specification.
This document describes the hardware shown in Figure 1. It provides a detailed systematic technical guide to design in a dual-phase buck converter using Maxim’s MAX17509 step-down DC-DC converter. The power supply has been built and tested, details of which follow later in this document.