At this time, ADI does not have a MIL-STD-1275D LTC7862 reference design. The input voltage of the LTC7862 is limited to 140V which will accommodate the 100V surge requirement, but not the 250V, 15mJ spike requirement. While it is likely possible to extend…
Is the spice model available yet?
I am using LTC7862 to make surge stopper. My circuit schematics attached.
LTC7862 is distorted over 34 volts supply voltage. Can you see something wrong on the schematics?
What do you suggest? Thanks..
Attached the schematic for reference
原本選用LTC7860, P-MOSFET 250V以上的RDSon都很大, 使用的話MOSFET功耗太大 後來改找LTC7862, 因為LTC7862是用 N-MOS但LTC7862的Datasheet裡面沒有提到關於Floating Ground的說明與如何設計 (LTC7860有)
1. LTC7862目前有符合MIL-STD-1275D規範的參考設計嗎?2. LTC7862 Floating Ground設計的部分有沒有一些設計的建議…
The LTC7862 model is available. Please update your LTspice (Tools, Sync Release) to the latest release.
LTC7862 can't be started with load, but it can be loaded after no-load start.The schematic is as follows（The schematic is a reference chip manual）
Hi Mett, Both LTC4366 and LT4363 are used in the MIL-STD-1275D reference design (DC2150A) to split the stress between the two series MOSFETs. Due to threshold voltage differences, parallel MOSFETs may not share current (i.e., stress) during current or…
D1's leakage appears be the issue. Please see page 22 of the LTC7862 Data Sheet "A Schottky diode should not be used between DRVCC and BOOST, as the reverse leakage of the Schottky diode at hot will be more current than the charge pump can provide." Hope…