TPS63001: TPS63001DRCR

Hi Karam,

What's the battery voltage during your test? Is the 35mA refer to the total current out of the battery?

Regards

Lei

Hi Lei, I tested another prototype of my card and found that the TPS63001DRCR circuit consumes about 4mA. Is there an explanation for this?

Hi Karam,

Again what's the battery voltage during your test? Is the 5mA refer to the total current out of the battery?

Regards

Lei

The battery voltage during the test is 4.2 V. Yes the 5mA refer to the total current out of the battery, for information the charge consume 0,17uA

Hi Karam,

Sorry for one more question, is the 4mA (not 5mA) was consumed when there is no load at the Vout? 

Regards

Lei

Yes exactly is between 3.65 mA and 4mA

Hi Karam,

Yes now the consumed current is clear between 3.65 mA and 4mA. 

During this test, what's the load at the TPS63001 output? No load? Or for example 1mA Iout? 

Regards

Lei

there is a load that consume 0.17uA..

Hi Karam,

When PS pin is connected to Vin and the power-save mode is disabled, this input current is possible, especially if the current is read directly from the Vin supply and not so accurate. 

For the confirmation, on your board, could you set the PS pin to low, enable the power-save mode, and make the load (Iout) to 1mA and 10mA, then measure the total input current or the efficiency? With so we can have the data to compared with the efficiency data in datasheet to check whether there is some thing wrong on your board.

Regards

Lei 

When the Power Save (PS) pin is set to low with an output load (Iout) of 99.15 µA, the input current (Iin) drawn from the battery is 347.17 µA. This means the TPS63001 regulator circuit itself consumes 248.02 µA.

Under different conditions:

• If Vbat = 4.2V and Iout = 1.7mA, Iin is 347.17 µA.

• If Vbat = 3.3V and Iout = 1.7mA Iin is 7mA 

Hi Karam,

Let me check and reply to you today.

Regards

Lei

Hi Karam,

Sorry I can't found an EVM to confirm whether the Iin you observed is normal, especially when Vbat = 3.3V. For Vbat = 4.2V, I think it's reasonable. 

I suggest that you can configure the device in IQ test condition (please bias the FB a little higher, such as Vref + 100mV when test IQ), measure the IQ and compare with the spec in datasheet. If they match, then the device should be OK.

Regards

Lei