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TPS62811-Q1: TPS6281120QWRWYRQ1

Part Number: TPS62811-Q1

Hello TI,

Currently I'm testing TPS6281120QWRWYRQ1, when i test for current that flowing  through inductor with the following conditions 

Vin = 6V DC (keysight E36231A)

Load current - 265mA (scientfic SME1701)

Inductor peak current(I_L max) is going to 818.3mA

I_L min  is going to -274.4mA

1)Since the convertor is operating in CCM mode why the inductor current is going to negative 

2) why the ripple current is very high  (delta I_L ) that  is 1.0927A,Could you please help me on these two