Hello,
We wish to make a constant off time controller for an SMPS. We wish to do this by using an MCP1630 PWM controller and a LTC6993 Monostable.
We will simply feed the gate drive output of the MCP1630 into the LTC6993, as well as driving the FET …we will then feed the output of the LTC6993 back to the OSC_IN pin of the MCP1630.
Can you see any potential problems with this?
LTC6993 monostable
http://cds.linear.com/docs/en/datasheet/69931234fc.pdf
MCP1630 PWM controller
http://ww1.microchip.com/downloads/e...Doc/21896C.pdf
The PIC16F785 has a fast internal comparator that could do the source current sense function, but it has loads of pins which we do not need….it also does not have an on-chip gate driver.
PIC16F785 Datasheet...
http://ww1.microchip.com/downloads/e...Doc/41249E.pdf
We wish to make a constant off time controller for an SMPS. We wish to do this by using an MCP1630 PWM controller and a LTC6993 Monostable.
We will simply feed the gate drive output of the MCP1630 into the LTC6993, as well as driving the FET …we will then feed the output of the LTC6993 back to the OSC_IN pin of the MCP1630.
Can you see any potential problems with this?
LTC6993 monostable
http://cds.linear.com/docs/en/datasheet/69931234fc.pdf
MCP1630 PWM controller
http://ww1.microchip.com/downloads/e...Doc/21896C.pdf
The PIC16F785 has a fast internal comparator that could do the source current sense function, but it has loads of pins which we do not need….it also does not have an on-chip gate driver.
PIC16F785 Datasheet...
http://ww1.microchip.com/downloads/e...Doc/41249E.pdf