CN0290

Extending the low-frequency range of high-performance phase-locked loops

Schematic PCB

Sub-1GHz and 2.4GHz Antenna Reference Designs

This antenna board reference design contains multiple low-cost antenna solutions for sub-1 GHz and 2.4 GHz short-range wireless systems.

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MAXREFDES27#: IO-LINK proximity detection light sensor

Maxim's MAXREFDES27# reference design is a tiny, low-power IO-Link ^® optical proximity sensor compliant with IEC 61131-9. It contains an infrared (IR) receiver, matching IR LED driver, IO-Link transceiver, and efficient step-down converter. The entire design fits on an 8.2mm x 31.5mm printed circuit (PC) board.

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CN0240

Bidirectional Isolated High-End Current Sense Module with 270 V Common-Mode Rejection

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FRDM33771BTPLEVB: MC33771 evaluation board with isolated daisy chain communication

CN0164

Low power consumption, long range ISM wireless measurement node

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CN0153

Build a USB-based temperature monitor using the ADuC7122 precision analog microcontroller and an external thermistor

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DER-879 - 10W isolated flyback power supply, using LinkSwitch-TNZ to generate AC zero-crossing signal and X capacitor discharge losslessly

10 W isolated flyback power supply with lossless generation of AC zero-crossing signal and X capacitor discharge using LinkSwitch-TNZ (LNK3317D)

Schematic PCB

24V dual-channel brushless DC motor driver reference design for dishwasher water pumps

TIDA-00447 is a 24V, dual brushless DC (BLDC) motor drive reference design that can be used to drive circulating water pumps and drain pumps in dishwashers. The circulating water pump and drainage pump drive stages are designed for continuous operation of 100W and 30W respectively. The drain pump driver is based on a single-chip, low external component count three-phase motor driver with integrated power MOSFETs and provides a proprietary sensorless control scheme enabling continuous sine wave drive. In addition, it features an integrated buck/linear regulator that efficiently reduces the supply voltage to 5V or 3.3V to power internal and external circuitry. The circulating water pump is implemented using a discrete solution with MCU, external MOSFET driver with protection mechanism and current sensing function, and external power MOSFET. This architecture allows the flexibility to adjust drive power levels as needed. The MCU is programmed through the InstaSPIN-BLDC software, which enables sensorless trapezoidal control of the BLDC motor using an anti-EMF integration approach, and can also be used to configure and control the speed of the drainage pump stage. A separate UART interface allows the drive unit to communicate with the main user interface controller. This reference design has been fully tested with current and motor stop protection mechanisms operating at full load.

Schematic PCB

Smart charger design based on MAX1898 C program project file source code and circuit diagram

Smart charger design based on MAX1898 C program project file source code and circuit diagram

Schematic PCB

1200W switching power supply design schematic diagram and PCB design information

Schematic PCB

MAXREFDES1202: Dual-phase buck converter using MAX17558 for inductor DCR current sensing

The MAXREFDES1202 is a dual-phase, buck converter reference design developed using the MAX17558, MAX15019A, and MAX17552. This reference design is rated to operate over a wide input voltage range from 15V to 55V. The design can deliver an output power of 360W at 12V.

Schematic PCB

MAXREFDES41#: 24V to 12V, 40W isolated power supply with planar transformer

The MAXREFDES41# reference design is a high-efficiency, high-precision, isolated DC-DC forward converter with an active clamp, current-mode PWM controller. The converter accepts 18V to 36V DC input and delivers output current up to 3.5A at 12V . Test results and hardware files provide complete documentation for the design. The board is also available for purchase.

Schematic PCB

Bidirectional non-isolated buck-boost converter

This design implements a bidirectional, non-isolated buck-boost power converter suitable for solar microconverters, hybrid electric vehicles (HEV), and battery charging applications.

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400VDC input, 28V/9A output, compact high-efficiency CLL resonant converter reference design

PMP9750 is a CLL resonant converter reference design with an input voltage of 400VDC and an output voltage of 28V/9A. Unlike the LLC series of resonant converters, the CLL resonant converter used in the PMP9750 utilizes its output inductor to minimize the size of the resonant tank. With the resonant controller UCC25600 and bridge driver UCC27714, the PMP9750 achieves a peak efficiency of 95.7%.

Schematic PCB

Headphone charging compartment schematic design

The schematic diagram of the charging box, the basic functions are as follows: 1. Charge the battery inside the charging box 2. The charging box charges the earphones 3. The charging box communicates with the earphones

Schematic PCB

CC2531 Zlight2 Reference Design

This reference design provides a complete set of color RGBW LED lights controlled by ZigBee Light Link. The light has four colors of LEDs (red, green, blue, white) and is powered via USB. These LEDs are controlled by a CC2531 device running the ZigBee Light Link software stack. In order to save space and cost, the circuit board is equipped with a half-wave dipole PCB antenna.

Schematic PCB

CN0319

14-bit, 4-20mA loop-powered thermocouple temperature measurement system using ARM Cortex-M3

Schematic PCB

MAXREFDES1051: 18V to 36V input, 24V/2A output, active-clamped forward isolated power supply

The MAX17599 low IQ active clamp current mode pulsewidth modulation (PWM) controller contains all the control circuitry required for the design of isolated forward converter power supplies. The MAX17599 is optimized for low-voltage industrial (4.5VDC to 36VDC) power supply applications.

Abdominal breathing training trainer

The design is based on the SensorTile.Box kit, which is set to expert mode for direction change detection (using a gyroscope), close to the practitioner's lower abdomen; the LIS25BA bone conduction sensor collects and identifies the vibration signal of the user's breathing status at the nostrils. The signal output is also connected to the central main control circuit. The optimal compliance judgment for monitoring the breathing process coordination during the entire exercise process and the corresponding voice prompt information broadcast are made by the central main control circuit.