Hi apson,
1. Please review 150uF cap at output and 100K soft-start resistor plus output current. Make sure current-limit is not violated during start-up and steady-state. You may use this as reference: www.analog.com/.../preventing-start-up-issues-due…
I have a +5V to -15.5V inverter based on the ADP5073. Design based on the Design Tool. I used an output current of 100mA and the tool indicated ADP5073. Though the effective current on steady state is only around 20mA, the startup current is high due…
As previously with eval kit of the ADP5075, documentation is missing in the web page. Came on folks, that sends a negative message to prospective users of the part. At list to me it does.
Anyway, can you provide documentation. I am considering testing…
I have implemented a -6V and -15V power with the ADP5074. neither will turn on. I am including a snip of the schematic with these 2 devices. Show me the fatal error.
EN can shut down the IC completely or not (no any output voltage in VOUT)?
Hi Balkis,
Please check ADP5074 for VIN 3.3V and 0.5A output current. https://www.analog.com/en/products/adp5074.html#product-evaluationkit
You may also check LT3959: www.analog.com/.../lt3959.html
Hi,
You need ADP5074 to get higher output current. Even then, ADP5074 at your input and output voltages can only provide up to around 0.8A. At 0.8A, efficiency will be about 72%.
Hi SuzanneR,
Please refer to Design Resources section of the ADP5074 product page. www.analog.com/.../LFCSP_16lds_3X3(CP-16-22).pdf
You may want to check other inverting DC/DC products like ADP5073/ADP5074/ADP5075. We have an available design tool in excel that can be downloaded from website. https://www.analog.com/en/products/adp5073.html#product-tools
Hi jeff_jiang,
The VOUT went slightly positive before going down. That's not expected. Can you try isolating the load to see if this going positive is gone by using resistive load instead of an E-load? It may also help if you probe the VIN and SW…
