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L6712D Folha de dados(PDF) 7 Page - STMicroelectronics |
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L6712D Folha de dados(HTML) 7 Page - STMicroelectronics |
7 / 29 page 7/29 L6712A L6712 (*) Pin not reported in QFN column have to be considered as Not Connected, not internally bonded. Figure 4. Reference Schematic 20 to 22 22 to 24 VID0-2 Voltage IDentification pins. These input are internally pulled-up. They are used to program the output voltage as specified in Table 1 and to set the PGOOD, OVP and UVP thresholds. Connect to GND to program a ‘0’ while leave floating to program a ‘1’. 23 25 PGOOD This pin is an open collector output and is pulled low if the output voltage is not within the above specified thresholds and during soft-start. It cannot be pulled up above 5V. If not used may be left floating. 24 27 BOOT2 Channel 2 HS driver supply. This pin supplies the relative high side driver. Connect through a capacitor (100nF typ.) to the PHASE2 pin and through a diode to VCC (cathode vs. boot). 25 28 UGATE2 Channel 2 HS driver output. A little series resistor helps in reducing device-dissipated power. 26 29 PHASE2 Channel 2 HS driver return path. It must be connected to the HS2 mosfet source and provides the return path for the HS driver of channel 2. 27 30 LGATE2 Channel 2 LS driver output. A little series resistor helps in reducing device-dissipated power. 28 31, 32 PGND LS drivers return path. This pin is common to both sections and it must be connected through the closest path to the LS mosfets source pins in order to reduce the noise injection into the device. PAD THERMAL PAD Thermal pad connects the silicon substrate and makes a good thermal contact with the PCB to dissipate the power necessary to drive the external mosfets.Connect to the GND plane with several vias to improve thermal conductivity. Table 6. Pin Function (continued) N. (*) Name Description SO VFQFPN PGOOD PGND PGNDS2 ISEN2 LGATE2 VSEN PHASE2 UGATE2 BOOT2 VCC SGND OSC / INH VID0 VID1 VID2 REF_IN/OUT PGNDS1 ISEN1 LGATE1 PHASE1 UGATE1 BOOT1 VCCDR FBR FBG Rg Rg LS2 HS2 L2 C IN C OUT S1 S0 S2 Rg LS1 L1 HS1 Vin GNDin PGOOD L6712 L6712A LOAD Rg FB COMP DROOP R FB R F C F |
Nº de peça semelhante - L6712D |
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Descrição semelhante - L6712D |
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