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EVB74190 Datasheet(PDF) 11 Page - Melexis Microelectronic Systems |
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EVB74190 Datasheet(HTML) 11 Page - Melexis Microelectronic Systems |
11 / 26 page EVB74190 MLX74190 Evaluation Board Manual 3 Power Management In any case JP12 and JP13 have to be set to connect the MLX74190 supply pins to generate the suppliesVDD and VS.There are different possibilities to supply the Evaluation Board, as explained below. 3.1 VDD Supply • Direct Supply: VDD can be supplied directly via CON13. In this case the jumpers JP1 and JP2 should NOT be set. Note that minimum and maximum applied voltages on VDD are 4.5V and 5.5V • Use of regulator : By setting the jumpers JP1 and JP2 the 5V supply for VDD can be generated by the regulator L7805 (U1) from the battery voltage VBAT applied on connector CON11. In such case no external supply must be connected to CON13 Note: The embedded regulator L7805 can support 35V max on its input, so that the DC level applied on VBAT (CON11) should not overpass 35V. 3.2 VS Supply • Default supply (VBAT through D1,L1, D3) By setting the jumper JP3 and connecting an external power supply on VBAT via connector CON11, the VS supply will establish itself at: VS = VBAT - Vdrop_D1 - Vdrop_D3. • Direct supply: The VS line, i.e. all the HV pins (VS_DRV56_0 …), can be supplied directly via the connector CON17. In that case JP3 should NOT BE set it could provoke damage to the components of the Hardware. In every cases the voltage applied on VS should remain in range 6 to 40V 3.3 Default Supply Configuration The EVB74190 is provided with the following Hardware setup: - JP12 is set: the VDD supply line is connected to VDD pin of MLX74190 - JP13 is set: the VS Supply line is connected to VS_DRV pins of MLX74190 - JP1 and JP2 are set: the regulator L7805 is connected - JP3 is set: VBAT is connected to VS line via D1, L1 and D3 In this HW configuration, applying VBAT = 12V allows to cover every features MLX74190 Note that the maximum voltage allowed on VBAT will be 35V due to the use of the 5V regulator 390127419001 Page 11 of 26 EVB74190 Rev 007 Sept-2014 |
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