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33 Threads found on Side Rail
An application that comes to mind is high side current sensing, where the inputs have to go to the rail.
Almost certainly you have burned out the rectifier on the -12V rail. It has probably gone short circuit and the extra load on the supply it is creating is shutting the rest of it down. Follow the -12V wire back to the PSU. In most cases it will lead to a capacitor to ground and a wire-wound choke. On the other side of the choke will be a second c
i recomend the highly secret, but actually easy, "cascaded buck using sic mosfets" It just uses one controller, but two high side fets, with an intermediary rail. You have a high side CST current sense at the upstream fet. There is other posts on this forum about it...i will link them here for you, let me go and seek them.. [SI
Connection Problem: IC 74LS83A 4-Bit Binary Full Adder Set-up Description I am a volunteer in schools trying to create an electronics project for Middle School children titled "How A Computer Really, Really, Really Works," and am having difficulty getting the IC 4-bit adder to work. The setup I am using and the problems I am having are descr
I need some advice on how to connect the feedback from a high-side current source. Circuit design requirements: - 48V supply voltage - LED string length will vary, but can be as long as a ~40V string or more - LED string must be connected directly to ground to work with an existing system - Current is controllable from a DAC voltage or simi
LT6220 is probably not first choice for a high side current monitor. You are right that CMRR and PSRR are unspecified for common mode voltage near the positive rail. Also the input offset is increased. But in most cases, resistor mismatch will be the dominant source of power supply power supply dependency. Respectively, the best way to achiev
I imagine is there is an open fault, the voltage will rise above 50V on the high side.
You should also consider this circuit. R1 is calculated to give you 0.1mA at max load current. R2 is voltage for the uC divided by 0.1mA.
Regarding current sense options. I presume Tunelabguy meaned to place the shunt at the +24V side of solenoid, which avoids large common mode AC and swing above supply rail. We should ask however about the purpose of the current sense. Sensing the total solenoid current may be necessary if you want to measure the current exactly. The low (...)
He needs a charge pump, a separate (isolated) power supply or a 24V rail to feed the bootstrap capacitor of the high side driver.
I need to drive a load with PWM using a P-Channel MOSFET and I need to supply current enough to drive the gate at high frequency whithout having too much loss. The circuit is as follows: 110947 As faster as I can turn ON/OFF as less loss I'll have on the MOSFET. The P Mosfet should be ON when the Vgs(th) > 2.5V but t
plz tell me any high side current sensing opamp , which is easily available in market? task is to sense a current ranging from 0 to 10 ampere and voltage is 12v.
Depending on geometry, they may be just the cheapest possible resistor-like element (here you'd see very long L, near minimum W). Or sometimes, you just want a "diode" that is not pinned to one rail or the other, at one end or the other (well diode, not too useful except for one side of an ESD clamp). I don't work on stuff that's that cost sensiti
An example of a 0.2A/15V current limiter using a rail-to-rail OP. Dimensioning has to be adjusted respectively, MOSFET Vgs rating might require additional voltage limiting or limited OP supply range. Voltage input is on the right circuit side.
PMOS can be easier to control (no need for a precharged bootstrap supply, no limitations on duty cycle to charge same, etc.). PMOS can be driven from within the rails, on the high side; NMOS needs a supply above the rail. NMOS will also have a leak-back issue when Vout > Vin, the drain-body diode would be forward biased. That "leak" could (...)
Each of the NMOSFETs wants to be driven, relative to its source terminal, by about 10V (unless these are some "logic level" FETs). The low side FET wants -70 (off) and -60 (on). Its source is pinned to the -70V rail. The high side FET wants -70 (off) and +80 (on) because the source is flying and the drain is pinned. Driving it +/- 90V (...)
I need a rail-mount terminal block to run a local DC ground to one side of a number of relays, for use with a dry (ground/open) digital input module. One terminal to power supply ground, the rest to relay contacts. Should the terminal block be orange (data collection), blue (safe DC), or green (ground)? Thanks, J
The application demands for a dedicated highside shunt measurement amplifier IC or any kind of self designed high side measurement with level translation, typically using a current source to bridge the 100V potential difference with low common mode effect. To design it yourself, think of a low power rail-to-rail OP, (...)
Check connection for 100k resistor on the left side circuit (must be connected to pin 3).
I have a problem in IR2110 gate driver. I have given PWM at Hin(in phase) and Lin(out phase). The IC is working on the high side(Pin no1) but it is not working on the low side of the IC(Pin no 7). I have tried all the configurations but it is still not working. Please suggest me any remedy to my problem..