Hi,
I’m looking for a pin-pin compatible replacement for Diode Inc AP61100.
A replacement that can perform 100% duty cycle in order to produce 3V (or 2.8V) from battery (until 3.2V)
Seems MP1601 and MP2141 can (duty cycle claimed to be 100%), but datasheet have very few information on that.
Do you confirm that both these parts can?
When using design tool Off Time Limit is reached
Is that off time required for bootstrap recharge?
I do not see the point of being 100% duty cycle if off time is required (sory for my lack of knbowledge on DCDC…)
Also, why MP1601 and MP1601A are so difficult to buy? There is no availability at all…
BR
Would there be an MPS guy to help me please?
Hello,
Yes, both of the MP1601 / MP2141N are capable of 100% dutycycle. One of the main advantages is lower RDson for MP2141N.
Regarding off-time, I believe you referring to min-off time. This is accounted for in high dutycycle operation.
Regards,
Nouman
Thanks for this answer.
What would be then the expexted behavior at high duty-cycle, between 90% and 100% duty-cycle, how do the device operate?
Appart from the 100% line in the abstract, there is nothing describing the behavior, and "the dcdc design tool raises min off time error.
Also, why MP1601 and MP1601A are so difficult to buy? There is no availability at all…
BR
Hi,
There are certain points to consider for the high duty cycle operation, I was referring to dead time between fets, however, we can hit limits of the device based on how the external components are sized and what frequency the device is operating at.
Regarding purchasing, please contact mpsnow@monolithicpower.com.
What is your application? would LDO fit best?
Best,
Nouman
Is there a way to simulate the behavior?
How can we estimate how component will behave if there is so few data in the datasheet?
LDO could maybe fit, depending on efficiency.
Hi,
You may utilize MPSmart to simulate for MP1601.
MPSmart | Design Tools | MPS | Monolithic Power Systems
Best,
Nouman
Thanks, I will try this.
BR