DRV110: DRV110APWR

Boris Ivanic

Part Number: DRV110

Hi,
I need information about Ipeak tolerances which is made by choose of Rpeak resistor. According the data sheet on page 6 in Electrical char. Current controller internal settings says that if I ground the PEAK then the variation of Ipeak is 270mA to 330mA with nominal 300mA. Whats happen if I use a Rpeak instead? Is variation dependent of Rpeak (1%) or should I get 10% variation of Ipeak independent of Rpeak? What is tolerance I can expect over temperature range?
Best regards Boris Ivanic

over 6 years ago

0 James Lockridge19 over 6 years ago

TI__Genius 14485 points

Hello Boris,

The variation due to the Rpeak and Rhold resistors will only depend on resistor tolerance. The main source of variation for current regulation is the comparator in the sense pin. I think the variation in the datasheet is part-to-part process tolerance rather than temperature. Let me check with our design team on that.

0 James Lockridge19 over 6 years ago in reply to James Lockridge19

TI__Genius 14485 points

Boris,

I confirmed with design. The variation in the spec is due to process tolerance among devices. The variation due to temperature is small.

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DRV110: DRV110APWR