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SN6501-MULXFMR-EVM: Extreme poor efficiency in light load

Part Number: SN6501-MULXFMR-EVM
Other Parts Discussed in Thread: SN6501, SN6505A

Hi TI team,

I am in middle of developing a product using SN6501.

When I evaluate the part using SN6501- MULXFMR evaluation board, I've noticed the very poor efficiency in light load (etc 2mA)

My design requirement:
VIN: 5V
VOUT: 10V
Vout accuracy: ±5%
IOUT: 2mA minimum (Continuous); 40mA maximum (occurred at 1 second pulse)

When load is only 2mA, the current consumption at the input is 20mA. It is equivalent to 10% efficiency, It is unacceptable for my application as the input power is very limited.

Could you advise me, please?

Regards

Alan