The MAX77859 is a high-efficiency, high-performance buck-boost converter targeted for systems requiring a wide input voltage range (2,5 to 22 V). The IC can supply up to 6 A of output current in buck mode and up to 4 A in boost mode (VIN = 3,7 V, VOUT = 5 V). The IC allows systems to change the output voltage dynamically through its I2C serial interface.
The MAX77859A features I2C-adjustable output current limit with resolutions of 50 mA/step (with 10 mΩ sense resistance) to support USB-C PPS requirements. The MAX77859B is a non-PPS version and is optimised for low quiescent current. Systems equipped with the MAX77859 can provide fast-charging peripheral devices with higher output voltage, minimising power loss across cable/connector and reducing charging time.
The IC operates either in SKIP mode or in forced-PWM (FPWM) mode, depending on the operating conditions, to optimise efficiency. The default output voltage is 5 V when using internal feedback resistors. The IC can also be configured to any default output voltages between 3 and 20 V when using external feedback resistors. The output voltage is adjustable dynamically (DVS) between 3,2 and 16 V in 20 mV steps when using internal feedback resistors or between 3 to 20 V when using external feedback resistors (with the step-size dependent on the external feedback resistor ratio) by programming the internal reference voltage through the I2C serial interface.
MAX77859A features output current limiting: Using a 10 mΩ sense resistor, the output current limit threshold is adjustable dynamically between 1 and 5 A in
50 mA steps via the I2C serial interface, with a 3 A default value.
NXP has expanded its MCX A Series Altron Arrow
AI & ML
NXP has significantly expanded its MCX A Series of Arm Cortex-M33 microcontrollers, doubling the portfolio with six new families aimed at industrial and IoT edge applications.
Read more...Four-quadrant regenerative grid simulator Conical Technologies
Power Electronics / Power Management
The IT7900EP series high-performance regenerative grid simulator from ITECH is a full four-quadrant AC grid simulator capable of both sourcing and sinking power.
Read more...90 W PSU with 150% boost capability Brabek
Power Electronics / Power Management
RECOM’s cost effective REFIN2U-S90/CL DIN rail AC/DC boasts a 90 W rating with a boost capability of 150% for 4,5 seconds to allow for surge loads.
Read more...Exploring Bluetooth Channel Sounding Altron Arrow
Telecoms, Datacoms, Wireless, IoT
NXP has enabled BCS on the MCX W72 multi-protocol wireless MCU, which supports Bluetooth Low Energy 6.0, Thread, Zigbee, and Matter.
Read more...Standalone USB PD controller Future Electronics
Power Electronics / Power Management
The STUSB4531 from STMicroelectronics is a standalone USB Power Delivery sink controller designed to streamline the implementation of USB-C power negotiation in sink devices without requiring a full software stack on a host microcontroller.
Read more...Dual-band Wi-Fi 6 companion module Altron Arrow
Telecoms, Datacoms, Wireless, IoT
The SimpleLink Wi-Fi CC33xx family of devices from Texas Instruments are dual-band Wi-Fi 6 companion modules enabling engineers to connect more applications with confidence.
Read more...MIL-Spec DC-DC power converters Vepac Electronics
Power Electronics / Power Management
PowerGood has introduced a range of 15 W to 600 W military DC-DC power converters engineered for mission critical defence applications.
Read more...Compact power MOSFET for high current switching Future Electronics
Power Electronics / Power Management
onsemi’s NTMFSC2D6N08X is a high-performance 80 V N-channel power MOSFET engineered for demanding switching and power conversion applications.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version