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L6759DTR Datasheet(PDF) 9 Page - STMicroelectronics |
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L6759DTR Datasheet(HTML) 9 Page - STMicroelectronics |
9 / 51 page L6759D Pin description and connection diagrams Doc ID 023240 Rev 1 9/51 2 Pin description and connection diagrams Figure 4. Pin connection (top view) 2.1 Pin description 48 47 46 45 44 43 42 41 40 39 38 37 13 14 15 16 17 18 19 20 21 22 23 24 36 35 34 33 32 31 302928 27 26 25 12 3 4567 8 910 11 12 TM SPWM VR_HOT TCOMP SCSP ILIM SRGND SFBR SVSEN SFB SCOMP SCSN ENDRV SVR_RDY IMON REF RGND LTB FBR VSEN FB COMP VDRV GDC L6759D Table 2. Pin description Pin# Name Function 1 to 3 PWM3 to PWM1 PWM outputs. Connect to multi-phase external drivers PWM input. These pins are also used to configure HiZ levels for compatibility with drivers and DrMOS. During normal operations the device is able to manage the HiZ status by setting and holding the PWMx pin to a pre-defined fixed voltage. Connect PWM3 to 5 V through 1 kW resistor to program 2-phase opera- tion. 4 PHASE Connect through resistor divider to Channel1 multi-phase switching node. 5 VR_RDY VR ready. Open drain output set free after SS has finished in multi- phase and pulled low when triggering any protection on the multi-phase section. Pull up to a voltage lower than 3.3 V (typ.), if not used it can be left floating. 6CS3P Channel 3 current sense positive input. Connect through an R-C filter to the phase-side of the channel 3 inductor. When working at 2-phase, short to the regulated voltage. 7CS3N Channel 3 current sense negative input. Connect through an Rg resistor to the output-side of the channel inductor. When working at 2-phase, still connect through Rg to CS3P and then to the regulated voltage. Fil- ter the output-side of Rg with 100 nF (typ.) to GND. |
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