In the design of high-precision power management,current monitoring chip is the basic device to ensure the reliable operation of servers,industrial equipment and new energy systems.For a long time,TI-INA226 has become the default choice for many engineers with its I2C digital output and high integration.With the maturity of the local supply chain,GXI340U introduced by GXCAS provides a smooth domestic alternative path for the existing design in a way that the pin definition is compatible with the register mapping.
First,GXI340U and TI-INA226 parameter benchmarking
GXI340U is also a high-side voltage,current and power consumption monitoring chip with a built-in 16-bit ADC,which supports I2C/SMBus interface and 16 programmable slave addresses.The power supply range is 2.7-5.5V,which is in the same order as INA226.In the core range,the shunt input of both of them is±81.92mV,and the offset voltage is 2.5μV(maximum 10μV),with similar accuracy.Measurement error of GXI340U in full temperature range<:0.2%,temperature drift<30ppm,the maximum gain error of INA226 is 0.1%,both of which are high-precision files.In terms of power consumption,the working current of GXI340U is typically 300μA,which is the same as that of INA226.
Second,the key points of alternative design
The two packages have different body sizes(GXI340U is MSOP10L 3.0×3.0mm,INA226 is VSSOP-10 3.0×4.9mm).Although they are both 10 pins,with 0.5mm pitch and compatible pin arrangement,PCB pads should be drawn separately according to their respective packages.This is"the pin definition is compatible with the register mapping,which can smoothly replace the original design",rather than the zero change of the pad.
Third,the applicable scenario
Relying on the above compatibility,wide common-mode range of 40V,minimum conversion time of 140μs,and programmable alarm of ALERT pin,GXI340U is suitable for server multi-channel power rail monitoring,industrial automation,energy storage and photovoltaic inverter,robot battery pack sampling and other scenarios.RAMSUN,as a first-class agent of GXCAS and a local supplier of current monitoring chips,can provide stable domestic supply options on the basis of the existing INA226 design and reduce the dependence on a single source of goods.If you are evaluating the alternative of INA226,please contact us to get the details of GXCAS GXI340U and the evaluation board information.
Keywords:GXI340U
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