New from Coilcraft is a line of ultra-miniature step-up transformers that are ideal for use with energy harvesting ICs. The LPR6235 family offers turns ratios as high as 1:100 and a coupling coefficient (k) of 0,95 or more in a surface mount package measuring just 6 mm square by 3,5 mm high.
The LPR6235 was chosen by Linear Technology for use with its new LTC3108 ultra-low-voltage step-up converter and power manager. Because of their high efficiency, low DCR and 1:100 turns ratio, Coilcraft’s transformers allow the IC to operate from input voltages as low as 20 mV.
Four models are available with primary-to-secondary turns ratios of 1:100, 1:90, 1:50 and 1:20. Lower ratios are designed for use with energy sources such as thermopiles that output higher voltages. Coilcraft can produce versions with custom turns ratios and also offers the LPR4012 family of transformers with ratios from 1:10 to 1:1,5 in an even smaller package.
The efficiency of the LPR6235 transformers comes from their >0,95 coupling factor and primary winding DC resistance of 0,08 to 0,2. They feature 100 V winding-to-winding isolation and primary winding inductance values from 7,5 to 25 µH. Current ratings range from 1,6 to 0,7 A.
The parts are RoHS compliant and are built for operating temperatures from -40°C to +85°C and storage temperatures from -40°C to +125°C.
Analysis of switch-mode power supply: inductor violations Altron Arrow
Editor's Choice Power Electronics / Power Management
Common switch-mode power supply (SMPS) design errors are discussed, and their appropriate rectification is specified, with details on complications that arise with the power stage design of DC-DC switching regulators.
Read more...Compact PCB-mount SMPS RS South Africa
Power Electronics / Power Management
Traco Power’s 5W PCB-mount switch mode power supply (SMPS) offers high efficiency, and is well suited for a variety of applications in the automation, electronics, electrical and mechanical industries.
Read more...AC-DC brick PSU Conical Technologies
Power Electronics / Power Management
These PSUs have a typical efficiency of up to 92%, and a power factor value of up to 0,99. They are available in 12, 24, 28, 48 and 54 V output versions.
Read more...5 kW switching PSU range Conical Technologies
Power Electronics / Power Management
Mornsun has released a new switching power supply range, the LMF5000-25Bxx, which has a 5000 W capacity, and features universal AC input configurations.
Read more...Reliable charging range Current Automation
Power Electronics / Power Management
Whether you’re powering essential electronics, keeping emergency equipment operational, or maintaining the performance of critical machinery, the need for dependable charging solutions cannot be overstated.
Read more...SiP supports LTE/NB-IoT and GNSS RF Design
DSP, Micros & Memory
The nRF9151 from Nordic Semiconductor is an integrated System-in-Package that supports LTE-M/NB-IoT, DECT NR+ and GNSS services.
Read more...Microchip expands its mSiC solutions EBV Electrolink
Power Electronics / Power Management
The highly integrated 3,3 kV XIFM plug-and-play digital gate driver is designed to work out-of-the-box with high-voltage SiC-based power modules to simplify and speed system integration.
Read more...Nordic expands nRF91 series RF Design
DSP, Micros & Memory
Nordic Semiconductor has announced the expansion of its nRF91 series cellular IoT devices with the introduction of the nRF9151 System-in-Package (SiP).
Read more...Dual-port USB-C power delivery solution Altron Arrow
Power Electronics / Power Management
Infineon’s CYPD7272-68LQXQ is the tray packing option of the company’s dual-port USB-C power delivery solution and features an integrated dual-port USB-C PD + DC-DC controller.
Read more...LEXI-R10 series cellular module RF Design
Telecoms, Datacoms, Wireless, IoT
The LEXI-R10 Series from u-blox are LTE Cat 1 bis modules that support multi-band LTE-FDD, and are designed for size-constrained devices.
printer friendly version