Part Number: TPS22912C
Hi
Now we are considering the following charger system.
If the charger is connected, Li-ion battery would be charged. (Figure 1)
Then, when the charger is disconnected VOUT voltage (voltage of Li-ion) appears…
Other Parts Discussed in Thread: TPS22912C Dear support member,
My customer used TPS22912C.
TPS22912C include Reverse Current Protection.
What is the circuit configuration of Reverse Current Protection? Could you teach equivalent circuit?
VRCP…
Other Parts Discussed in Thread: TPS22912C Hello,
When using TPS22912C, does a 3 Meg resistor from ON to GND provide sufficient pull-down strength? Or should a lower resistance value be used (and if so, what is the maximum acceptable value)?
Thanks…
Other Parts Discussed in Thread: TPS22912C Hello,
Aside from the addition of quick output discharge and a slightly faster rise time, are there any other notable differences between TPS22912C and TPS22913C?
Thanks,
Jonathan
Hi William,
This device can be powered from both input and output. The reverse current blocking will still work as long as the input voltage is 0V.
I think an issue could arise with the input floating as when it floating, there is no guarantee than…
Hi Alek,
Our first order of TPS22910A-EVM was acting as enable high. Component stuffing option was different per datasheet, and the unit was acting as enable high instead of enable low eventually the board became unresponsive (Vin = 5V, nEN = High/Low…
Hi Arthur,
the TPS22912C is only 2A, we need 4.5A and up. I think we will need an external comparator with hysteresis + load switch.
Best Regards,
David.
Hi Andy,
How is the TPS22912C configured here? Is the enable pin of the device high when you are looking for RCB to take effect? When enabled, the TPS22912C relies on measuring a voltage difference between VOUT and VIN to enable reverse current blocking…
Hi Yamamoto-san,
Got it, so 115us is the minimum turn on time.
Would the TPS22912C or the TPS22913C work? The devices are a little larger (0.9mm *0.9mm), but both have a slower rise time.
Thanks,
Arthur Huang
Hey David,
Unfortunately, I don't think this configuration will work. Taking a look at Table 1 in the LM66100 datasheet, the device will either pass 3.3V to the output when on, or the device will enter "diode mode" when off. Therefore, there will still…
