BQ51013B: Thermal performance at light load

Mason Noh

Expert 2490 points

Part Number: BQ51013B

Hi TI,

Please let me know thermal performance when output current value is 20mA.

BQ51013BEVM userguide shows data at 1A.

Is there any thermal issue because of ultra low load?

Battery: 30mAh, Ichg: 20mA

over 6 years ago

0 Bill Johns over 6 years ago

TI__Guru* 76446 points

Hello

During low current, 20mA the RECT voltage will be higher due to Dynamic Rectifier Control, this will increase loss at low load. But should not lead to thermal problems at low current. See Figure 4.

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BQ51013B: Thermal performance at light load