TPS61199EVM-598

EVAL MODULE FOR TPS61199-598

Thisuser'sguidedescribes thecharacteristics, operation, anduseof theTPS61199evaluationmodule (EVM). ThisEVMcontains theTexas InstrumentsTPS61199, aWLEDpower solutionprovidingup to eight independently regulated current outputs usinga single inductor step-up (boost) converter. The current outputsare ideal fordrivingaWLEDbacklight innotebook/laptopcomputers.Thisuser'sguide includesEVMspecifications,recommendedtestsetup,billofmaterials,andaschematicdiagram.

1 Applications

The TPS61199 is an excellent solution for computer notebook and monitor LCD display backlighting

2 TPS61199EVM-598 Electrical Performance Specifications

Table 1 provides a summary of the TPS61199EVM-598 performance specifications. All specifications are given for an ambient temperature of 25°C.

3 Modifications

See the data sheet (SLVSAN3) when changing components such as R6 to set the LED current or R2 and R3 to set the OVP threshold. To aid in such customization of the EVM, the board was designed with devices having 0603 or larger footprints. A real implementation likely occupies less total board space. 

Note that changing components can improve or degrade EVM performance. For example, using inductors with larger saturation current rating allows the use of lower input voltages

4 SchematicandBillofMaterials