The TPSM83102, for example, is a buck-boost converter in a µSiP module that delivers 1.5-A outputs at 1.2 to 5.5 V. It automatically operates in buck or boost mode depending on the input voltage ...
This increases the rise and fall times of the LED current. Open loop control of the boost converter to control the LED current (as in the case of an HV9910-based buck control) is not possible. Closed ...
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