Power management ICs combine discrete functions to provide compact solutions
7 September 2005Power Electronics / Power Management
Fire & Safety
Microchip has introduced a series of power management ICs that combine a synchronous buck switching regulator, low dropout (LDO) regulator and power-good function into single-chip solutions.
The TC1303/TC1304 and TC1313 include the 500 mA buck regulator, and the 300 mA LDO. The differences between the five devices relate to the power-good function.
* The TC1303A power-good operates on the buck regulator output.
* The TC1303B power-good operates on the LDO output.
* The TC1303C power-good operates on both the buck regulator and LDO outputs.
* The TC1304 power-good is used to provide a power sequencing function.
* The TC1313 does not feature a power-good function.
These devices provide a low-power, low-cost, minimal board space solution for a variety of battery-operated and dual output voltage systems, says the company. Package options include low-profile (0,9 mm) 3 x 3 mm 10-pin DFN package.
The synchronous buck regulator is a very efficient switching DC-DC converter. Under heavier loads, the converter operates in PWM mode at a fixed 2,0 MHz switching frequency. For lighter loads, such as in a standby mode, the converter switches to a power-saving pulse frequency modulation (PFM) mode. The regulator has adjustable and fixed output voltage options.
The low-noise linear LDO regulator supports up to a 300 mA load with a very low dropout voltage (137 mV at 200 mA typical), and is stable with a single, 1,0 µF ceramic capacitor on the output. All the devices offer a number of protection features, including under-voltage lockout, over-temperature protection and output short circuit protection.
The TC1303/TC1313 devices offer individual shutdown controls for the two regulators, while the TC1304 uses the power-good function together with the SHDN pin to provide a power-sequencing function (where, during power-up, the LDO must be operating within specification before the buck regulator is activated, and, during power-down, the buck regulator output is disabled prior to the LDO output).
To help demonstrate the effectiveness of these power management solutions, the company's TC1303BDM-DDBK1 demonstration board is available.
Rugged railway-grade DC-DC power modules iCorp Technologies
Power Electronics / Power Management
iCorp Technologies has introduced the AIPUPOWER ZCD100 and ZCD150 Series, a family of rugged DC-DC converters designed to meet the demanding electrical and environmental requirements of railway and transportation systems.
Read more...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.
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