Other Parts Discussed in Thread: TPS61230
Hi support team,
The TPS61232 has a fixed 5V output.
Does it work even with 5V input?
The input source is a 5V battery.
If it works, is it due to "Zero Duty Cycle Mode"?
Regards,
Dice-K
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Hi Dice,
It can work with VIN=VOUT.
TPS6123x is using COT control, there is so called "zero duty cycle mode", and hence can support VIN>=VOUT.
Here is the test result when VIN>=VOUT of TPS61230, which is adjustable version of TPS61232.
Regards,
Nathan
Hi Nathan,
Thank you for your reply.
I believe "Zero Duty Cycle Mode" has the condition that VIN is less than "VOUT + 0.24V".
Is it not possible if VIN exceeds 5.24V?
In Figure 32, I am concerned because VIN is operating even if it is "VOUT + 0.7V".
Best regards,
Dice-K
Hi Dice,
I think 'VOUT + 0.24V' here, the VOUT means the real output voltage, not target output voltage. So it can support VIN > VOUT_target + 0.24V.
But be careful that VIN can't exceed 5.5V as ROC table shows.
Regards,
Nathan