Post History
I would like to save some costs with ideal diode controllers. Basic requirement is for the diode controller to block overcurrents (short circuits) in both directions. The MAX16141A IC can do it a...
#2: Post edited
by
kellogs
·
2023-08-04T11:22:12Z (over 1 year ago)
- I would like to save some costs with ideal diode controllers.
- Basic requirement is for the diode controller to block overcurrents (short circuits) in both directions.
[This IC](https://ro.mouser.com/datasheet/2/609/MAX16141_MAX16141A-3127602.pdf) can do it and the datasheet openly discusses it, i.e with two back to back MOSFETs and a sense resistor[This other IC](https://www.ti.com/lit/ds/symlink/lm5069.pdf?HQS=dis-mous-null-mousermode-dsf-pf-null-wwe&ts=1691048044255&ref_url=https%253A%252F%252Fwww.mouser.de%252F) I think can also do the same, just that its datasheet does not mention a second anti-series MOSFET at all. Its cost is half of the first IC, so I would want to use it. Would it be fine, and if so, could I use two different MOSFET types or do they have to be of the same kind ?
- I would like to save some costs with ideal diode controllers.
- Basic requirement is for the diode controller to block overcurrents (short circuits) in both directions.
- [The MAX16141A IC](https://ro.mouser.com/datasheet/2/609/MAX16141_MAX16141A-3127602.pdf) can do it and the datasheet openly discusses it, i.e with two back to back MOSFETs and a sense resistor
- [Thie LM5069 IC](https://www.ti.com/lit/ds/symlink/lm5069.pdf?HQS=dis-mous-null-mousermode-dsf-pf-null-wwe&ts=1691048044255&ref_url=https%253A%252F%252Fwww.mouser.de%252F) I think can also do the same, just that its datasheet does not mention a second anti-series MOSFET at all. Its cost is half of the first IC, so I would want to use it. Would it be fine, and if so, could I use two different MOSFET types or do they have to be of the same kind ?
- -----
- **edit** - New user here, can't comment on other's answers.
- So, among the dozen features or so supported by LM5069 there is also "Circuit breaker function for severe overcurrent events".
- Could I add in a second mosfet, placed back-to-back with the mosfet in their example diagrams, controlled by the same GATE pin, and get the circuit breaking feature - this time in both ways ? Would other features fail / be impacted if I did that ?
#1: Initial revision
by
kellogs
·
2023-08-03T13:06:36Z (over 1 year ago)
Two way circuit breaking capability for ideal diode controllers
I would like to save some costs with ideal diode controllers. Basic requirement is for the diode controller to block overcurrents (short circuits) in both directions. [This IC](https://ro.mouser.com/datasheet/2/609/MAX16141_MAX16141A-3127602.pdf) can do it and the datasheet openly discusses it, i.e with two back to back MOSFETs and a sense resistor [This other IC](https://www.ti.com/lit/ds/symlink/lm5069.pdf?HQS=dis-mous-null-mousermode-dsf-pf-null-wwe&ts=1691048044255&ref_url=https%253A%252F%252Fwww.mouser.de%252F) I think can also do the same, just that its datasheet does not mention a second anti-series MOSFET at all. Its cost is half of the first IC, so I would want to use it. Would it be fine, and if so, could I use two different MOSFET types or do they have to be of the same kind ?