Power Electronics / Power Management


Accurate current measurement at low cost

23 January 2008 Power Electronics / Power Management

Zetex Semiconductors has developed a low cost current monitor producing a current output signal with an accuracy as high as 1%. Housed in the 5-pin SOT23 package and with a wide 2,5 V to 20 V common mode voltage range, the ZXCT1020 provides a versatile current measurement solution for a wide range of applications from low voltage portables through to automotive circuitry. Converting the voltage developed across a sense resistor into a ground referenced current output, this high side current monitor is simply configured using low cost external resistors. As a result, the device output can be scaled independently of the sense resistor, using one resistor to set the transconductance and another to set the overall gain and output impedance. The ZXCT1020's very low on-chip offset trimming provides high performance for very small sense voltages at high current levels. For such conditions, accuracy is further enhanced by the device's very low minimum operating current consumption, typically 25 μA.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

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...
Microsoft Windows IoT on ARM
Altron Arrow Computer/Embedded Technology
This expansion means that the Windows IoT ecosystem can now harness the power of ARM processors, known for their energy efficiency and versatility.

Read more...
Accelerating the commercialisation of the 5G IoT markets
Altron Arrow Editor's Choice Telecoms, Datacoms, Wireless, IoT
Fibocom unveils Non-Terrestrial Networks (NTN) module MA510-GL, enabling satellite and cellular connectivity to IoT applications.

Read more...
Microchip introduces ECC608 TrustMANAGER
Altron Arrow Circuit & System Protection
To increase security on IoT products and facilitate easier setup and management, Microchip Technology has added the ECC608 TrustMANAGER with Kudelski IoT keySTREAM, Software as a Service (SaaS) to its Trust Platform portfolio of devices, services and tools.

Read more...
xG26 sets new standard in multiprotocol wireless device performance
Altron Arrow AI & ML
Silicon Labs has announced its new xG26 family of Wireless SoCs and MCUs, which consists of the multiprotocol MG26 SoC, the Bluetooth LE BG26 SoC, and the PG26 MCU.

Read more...
SolidRun unveils new SoM
Altron Arrow AI & ML
SolidRun and Hailo has unveiled a game-changer for engineers and AI product developers with the launch of their market-ready SoM, which packs the cutting-edge capabilities of the Hailo-15H SoC.

Read more...
An evolutionary step in customisable logic
Altron Arrow DSP, Micros & Memory
Microchip Technology is offering a tailored hardware solution with the launch of its PIC16F13145 family of microcontrollers, which are outfitted with a new Configurable Logic Block module.

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...