Systems such as laptop computers and other devices that have internal charge circuitry require a precise bi-directional current-sense amplifier to monitor accurately the battery''s current regardless of polarity. The MAX4377 (a dual low-cost current-sense) can be used to produce a bi-directional current monitor. Figure 1.
This paper shows a circuit configuration of the bidirectional current sensor, and the principle of the bidirectional current detection of the sensor is analyzed. The validity of this analysis is
The low-side bidirectional current-shunt monitor solution illustrated in the following image can accurately measure currents from –4A to 4A, and the design parameters can easily be
Systems such as laptop computers and other devices that have internal charge circuitry require a precise bi-directional current-sense amplifier to monitor accurately the battery''s current regardless of polarity. The MAX4377 (a dual
Bidirectional Power Directing Switches (CSD88539ND) TI Designs High Efficiency, Versatile Bidirectional Power Converter for Energy Storage and DC Home Solutions TI Designs Design Features The TIDA-00476 TI Design consists of a single DC-DC • Single Bidirectional Power Stage Functions as Both power stage, which can work as a synchronous buck Synchronous
In many battery-current monitoring applications, bidirectional current sensing is required to measure both charge and discharge currents in the battery. This application note describes how to connect two unidirectional current-output,
This low-power, low-side, bidirectional current sensing method uses two nano-power, zero-drift amplifiers (LPV821) and one micro-power comparator with an integrated, precision reference
Battery monitoring and over-current detection circuit Figure 1. Typical monitoring and Over-current detection circuit in a BMS Typical monitoring circuits consist of a shunt resistor in series with the system load. The voltage drop across this shunt resistor in indicative of the load current. The signal from the shunt resistor gets amplified and converted to digital signal before being fed to
An on-chip wide range bidirectional current sensor for monitoring Li-ion battery model 18650 is proposed in this paper. In order to detect the bidirectional current, two feedback sensing loops
In many battery-current monitoring applications, bidirectional current sensing is required to measure both charge and discharge currents in the battery. This application note describes how to connect two unidirectional current-output, current-sense amps, such as the MAX4172 and MAX4173, to form one bidirectional current-sense amplifier.
This investigation demonstrates a high-accuracy bidirectional high-voltage (HV) current sensor fabricated by CMOS technology. Besides Noise filter, Sense stage, and Controller, the proposed current sensor is featured with a Switching Network composed of transmission gates, which is able to steer the direction of the current. A digital feedback loop comprises Controller
This paper shows a circuit configuration of the bidirectional current sensor, and the principle of the bidirectional current detection of the sensor is analyzed. The validity of this analysis is verified through an experiment with the
The low-side bidirectional current-shunt monitor solution illustrated in the following image can accurately measure currents from –4A to 4A, and the design parameters can easily be changed for different current measurement ranges. Current-shunt monitors from the INA21x family have integrated precision gain resistors
The growing adoption of batteries with high voltages (HV), ranging from 400V to 800V, in Electric Vehicles (EV), coupled with the high load demand, necessitates enhanced circuit protection against over-current events and short-circuit faults. This is crucial to prevent damage to the connected wiring harness, battery, and loads. Conventional approaches like
The invention discloses a high-precision bidirectional current detection circuit applied to battery charging and discharging and a method thereof, wherein the circuit detection...
To resolve all the mentioned problems, a bidirectional current sensor using the fully-differential amplifier (FDA) with digital auxiliary circuits is proposed in this investigation. More specifically,
The invention discloses a high-precision bidirectional current detection circuit applied to battery charging and discharging and a method thereof, wherein the detection circuit...
In order to improve the electromagnetic compatibility performance of electric vehicle bidirectional chargers, the authors propose a main circuit topology and electromagnetic interference of the
1 Introduction. With the improvement of power electronics technology and energy storage, the DC microgrid has also been developed rapidly. As one of the cores, the bidirectional DC/DC converters are widely
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Because the INA181 can sense bidirectional current with the reference voltage, a single-channel device can replace the conventional way of using inverting and noninverting topology with general-purpose op amps. This application note also lists error calculations of the solution with reference voltage generated from the TL431 and TLV431 devices.
An on-chip wide range bidirectional current sensor for monitoring Li-ion battery model 18650 is proposed in this paper. In order to detect the bidirectional current, two feedback sensing loops are employed. The feedback sensing loops generate differential sensed current signals.
Because the INA181 can sense bidirectional current with the reference voltage, a single-channel device can replace the conventional way of using inverting and noninverting topology with general-purpose op amps. This application note also lists error calculations of the solution with
This low-power, low-side, bidirectional current sensing method uses two nano-power, zero-drift amplifiers (LPV821) and one micro-power comparator with an integrated, precision reference (TLV3012). This circuit is well-suited for battery powered devices where charging current and system current need to be monitored accurately. The gain of U1 and
A current detection circuit of a bidirectional switch according to a second aspect of the invention is provided so that, in the current detection circuit of a bidirectional switch according to the first aspect, the feedback amplifying unit is formed of an operational amplifier (OP 1), which is provided with two input terminals of positive and
To resolve all the mentioned problems, a bidirectional current sensor using the fully-differential amplifier (FDA) with digital auxiliary circuits is proposed in this investigation. More specifically, the proposed sensor is featured with a digital feedback loop, where the sensed output voltage is sampled and converted into digital codes to
A current observer-based digital critical conduction mode control of a bidirectional DC–DC converter with full-range soft switching for battery charging/discharging applications is proposed in
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