MAXREFDES1182: 3.5W 3.3V offline flyback converter using MAX17595

The MAX17595 is a peak-current-mode controller for designing wide input-voltage flyback regulators.

MAXREFDES121#: Isolated 24V to 3.3V 33W power supply

The MAXREFDES121# reference design is a high-efficiency, high-precision, isolated DC-DC forward converter with an active clamp, current-mode PWM controller. The converter accepts 24V (18V to 36V) DC input and delivers output current up to 10A at 3.3V. Test results and hardware files provide complete documentation for the design. The board is also available for purchase.

Schematic PCB

MAXREFDES125#: Non-isolated 24V to 5.1V, 20W power supply

MAXREFDES125# is an efficient, synchronous buck topology, non-isolated power supply design with 24V input, and a 5.1V output at 20W of power (4A). The design achieves over 96% efficiency and features the MAX17536, a high-efficiency, high-voltage, synchronous step-down controller optimized for industrial supplies. This entire circuit fits on a 20mm x 35mm board.

Schematic PCB

MAXREFDES150#Pocket IO PLC Development Platform

Schematic PCB

MAXREFDES124#: Isolated 12V to 5.5V 22W optocoupler-less flyback power supply

MAXREFDES116#: Isolated 24V to 5V 40w power supply

MAXREFDES116# is an efficient, active clamp topology, isolated power supply design with 24V input, and a 5V output at 40W of power (8A). The design features the MAX17599, an active clamp, current-mode PWM controller optimized for industrial supplies. This entire circuit fits on a 20mm x 70mm board.

Schematic PCB

MAXREFDES101#: Health Sensor Platform 2.0

Maxim health sensor (hSensor) platform helps customers evaluate Maxim's complex and innovative medical and high-end fitness solutions faster and easier. The hSensor platform supports the measurement of motion, precision skin temperature, biopotential measurements, and reflective photo plethysmography measurements, etc.

MAXREFDES1036: 20.25W offline flyback converter

The MAX17595 is a peak-current-mode controller for designing wide input-voltage flyback regulators. The MAX17595 offers optimized input thresholds for universal input AC-DC converters and telecom DC-DC (36V to 72V input range) power supplies. It contains a built-in gate driver for an external n-channel MOSFET. The MAX17595 houses an internal error amplifier with 1% accurate reference, eliminating the need for an external reference.

MAXREFDES1012: 10.6W, no optocoupler, flyback DC-DC converter

The MAX17690 is a peak current mode, fixed-frequency switching controller specifically designed for the isolated flyback topology operating in Discontinuous Conduction Mode (DCM). The device senses the isolated output voltage directly from the primary-side flyback waveform during the off-time of the primary switch.

MAXREFDES1130: Low output voltage ripple design using MAX17509 integrated switch, 0.9V/2A and 1.2V/2A dual-output step-down DC-DC converter

The MAX17509 integrates two internal switch step-down regulators with programmable features. The device can be configured as two single-phase independent power supplies or as a dual-phase, single-output power supply. The device operates from 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. The MAX17509 provides maximum flexibility to end-users by allowing them 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 concerns. Noise-sensitive applications, such as high-speed multigigabit transceivers in FPGAs, RF, and audio, benefit from this unique slew-rate control. SYNC input is provided for synchronized operation of multiple devices with system clocks.

Health sensor platform

Maxim health sensor (hSensor) platform helps customers evaluate Maxim's complex and innovative medical and high-end fitness solutions faster and easier. The hSensor platform supports the measurement of motion, precision skin temperature, biopotential measurements, and reflective photo plethysmography measurements, etc. The hSensor comes with a PC graphical user interface (GUI) application and Android application for customers to evaluate the sensors and other devices on the board. Hardware files and firmware source code provide complete documentation for the design. The board is also available for purchase.

MAXREFDES132#: 1-Wire Platform

MAXREFDES132# is an Arduino form factor compatible shield for the rapid development of 1-Wire, or iButton, projects.

MAXREFDES131#: 1-Wire Grid-EYE Sensor

MAXREFDES131# is a sensing solution featuring the Panasonic AMG8833 Grid-EYE® and the Maxim 1-Wire® bus, enabled by the DS28E17. The system enables presence sensing, people counting, and gestures while tethered up to 100m along the 1-Wire bus. The board features RJ-11 connectors and convenient mounting holes for quick evaluation and implementation.

MAXREFDES1015: Using MAX5971B, the PSE controller with the fewest components supports detection of IEEE 802.3af/at devices

The MAX5971B is a single-port power controller designed for use in IEEE 802.3af/at-compliant power-sourcing equipment (PSE). This reference design provides a detailed technical guide to designing the MAX5971B PSE controller for DC-disconnect.

MAXREFDES1171: Low Power Fault Indicator

The MAXREFDES1171 uses Maxim® low-power chips for power grid fault indicators based on the low-power Arm® Cortex®-M4 processor.

Schematic PCB

MAXREFDES1149: 12V/1A, synchronous, no optocoupler, isolated POE DC-DC converter

Power over Ethernet (PoE) is a technology that allows network cables to deliver power to a powered device (PD) via power-sourcing equipment (PSE) or midspan, and has many advantages over traditional methods of delivering power. The MAXREFDES1149 reference design is a 36V~57V input to 12V/1A output flyback PoE PD power module to be used in Ethernet equipment that needs the 12V power supply to be isolated from the primary Ethernet power.

Schematic PCB

MAXREFDES220#: Smart fingertip heart rate meter and pulse oximeter with signal processing function

The MAXREFDES220# reference design provides everything you need to quickly prototype your product to measure finger-based heart rate and blood oxygen saturation level (SpO2).

Schematic PCB

MAXREFDES161#: Frequency synthesizer

MAXREFDES161# is an Arduino form factor-compatible shield for synthesizing frequencies from 23.5 MHz to 6 GHz. Based on the MAX2871, no additional hardware is required to operate over the entire frequency range.

MAXREFDES145#: 8-channel IO-Link master

The MAXREFDES145# is a fully IO-Link®-compliant, 8-port IO-Link master reference design. This design uses TEConcept's IO-Link master stack and is both an IO-Link master reference design as well as an IO-Link sensor /actuator development and test system. Eight IO-Link ports allow for simultaneous testing of up to eight different sensors (or actuators).

Schematic PCB

MAXREFDES155#: DeepCover IoT Embedded Security Reference Design: Public Key Secure Data Path

The MAXREFDES155# is an internet-of-things (IoT) embedded-security reference design, built to authenticate and control a sensing node using elliptic-curve-based public-key cryptography with control and notification from a web server.