The LMHV/LMHV are adjustable 3-terminal positive voltage regulators capable of supplying in excess of A over a V to 57V output range. They are . The LMHV/LMHV are adjustable 3-terminal semiconductor products and disclaimers thereto appears at the end of this data sheet. The LMHV/LMHV are adjustable 3-terminal positive voltage regulators capable of supplying in Details, datasheet, quote on part number: LMHV.

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National Semiconductor

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. As the voltage input I will be using a V unregulated input voltage from a rectifier.

If so, is there anything that I have to be careful such as power ratings, Vmax, Vce, etc. Here is the datasheet: Datasheet says, ” Since the regulator is floating and sees only the input-to-output differential voltage, supplies of several hundred volts can be regulated as long as the maximum input to output datasheeh is not exceeded, or in other words, do not short the output to ground.

Also, what should be the power ratings of the resistors R5 and R4. Could you help me to calculate the required power rating?

For V, I calculate it as around 5W. It is possible but not this way. In a word – NO.

【LMHV CHMC】Electronic Components In Stock Suppliers in 【Price】【цена】【Datasheet PDF】USA

It is rated for 60 volts input, but output has resistors and capacitors to ground. The difference between input and output can be 60 volts minus 1. Lm31h7v is why in the application images it shows a output of 50 volts with an input of 60 volts or less. Since the output has resistors and loads connected to ground, the device is essentially referenced to ground for voltage adjust and loads.

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You can use a beefy zener diode datashet raise ddatasheet up volts or more, but this becomes your new ‘ground’ reference and if it shorts the LM will short out as well. It can be done if you accept the risk Below is an ‘Active’ zener diode using a bjt to boost the load ,m317hv. For high voltage and high current Q1 becomes a bit expensive.

First, zener in series with capacitor C1 and C3, as shown in EDIT2 will not work – where is no path for discharge current until voltage of “-” pin drops to zero. Use caps rated for Vin and Vout, and connect them directly.

【LM317HV CHMC】Electronic Components In Stock Suppliers in 2018【Price】【Datasheet PDF】USA

Second, in case of output overload, voltage drop across LM may become as high as Vin, which will breake it. This is why I think using this dafasheet IC in such configuration is not a good idea.

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Home Questions Tags Users Unanswered. Yes but NOT like this.

What are you trying to achieve with this power supply? What’s the load look like? Is this for a bench supply of some kind? Or are you trying to power a Nixie?

I am going to drive a piezo actuator with this. The actuator has around 4uF capacitance. There is a switching circuit at the tail of the regulator that charges and discharges the piezo actuator. C2 could be a problem too. Tony EE rocketscientist 62k 2 21 How can I add some extra protection to limit the current demand of the load?

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What if I run 30 Amps for micro seconds? You can follow the App Notesdatasheet but remember if the input short circuits for any reason the chip must be protected with a reverse diode. Design requries thought about ESR C with several caps say from 0.

power supply – Can I get a V DC output LMHV-MIL – Electrical Engineering Stack Exchange

Ferrite chokes, etc ertc. Why not buy a PSU from Meanwell? But the power of 3kW for 0. But a phase controlled triac or variac supply will drop from dataheet load to full load depends on Pd wasted power and Vmin for LDO so power is a premium for rep rate of pulse.

Dwtasheet variac bridge can decay, unless you sync, load pulse during charge peak. This is a limit set forth in section 6. Sparky 11k 2 15 So, I understand that as long as the input-to-output differential is within l3m17hv given limits LM’s and 2N should be fine in terms of Vce.

LM is a differential regulator so you can regulate 1kV in theory as long as input does not vary more than 40V. Eugene K 2 6. Sign up or log in Sign up using Google.

Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that dtasheet have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.