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L6751CTR Datasheet(PDF) 9 Page - STMicroelectronics |
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L6751CTR Datasheet(HTML) 9 Page - STMicroelectronics |
9 / 57 page DocID025037 Rev 1 9/57 L6751C Pin description and connection diagrams 57 A4 CS6N A Channel 6 current sense negative input. Connect through an Rg resistor to the output-side of the channel inductor. When working at < 6 phases, still connect through Rg to CS6P and then to the regulated voltage. Filter the output-side of Rg with 100 nF (typ.) to GND. B4 CS6P A Channel 6 current sense positive input. Connect through an R-C filter to the phase-side of the channel 6 inductor. When working at < 6 phases, short to the regulated voltage. A5 CS5P A Channel 5 current sense positive input. Connect through an R-C filter to the phase-side of the channel 5 inductor. When working at < 5 phases, short to the regulated voltage. B5 CS5N A Channel 5 current sense negative input. Connect through an Rg resistor to the output-side of the channel inductor. When working at < 5 phases, still connect through Rg to CS5P and then to the regulated voltage. Filter the output-side of Rg with 100 nF (typ.) to GND. A6 CS4N A Channel 4 current sense negative input. Connect through an Rg resistor to the output-side of the channel inductor. When working at < 4 phases, still connect through Rg to CS4P and then to the regulated voltage. Filter the output-side of Rg with 100 nF (typ.) to GND. B6 CS4P A Channel 4 current sense positive input. Connect through an R-C filter to the phase-side of the channel 4 inductor. When working at < 4 phases, short to the regulated voltage. A7 CS3P A Channel 3 current sense positive input. Connect through an R-C filter to the phase-side of the channel 3 inductor. When working at < 3 phases, short to the regulated voltage. B7 CS3N A Channel 3 current sense negative input. Connect through an Rg resistor to the output-side of the channel inductor. When working at < 3 phases, still connect through Rg to CS3P and then to the regulated voltage. Filter the output-side of Rg with 100 nF (typ.) to GND. A8 CS2N A Channel 2 current sense negative input. Connect through an Rg resistor to the output-side of the channel inductor. Filter the output-side of Rg with 100 nF (typ.) to GND. B8 CS2P A Channel 2 current sense positive input. Connect through an R-C filter to the phase-side of the channel 2 inductor. A9 CS1P A Channel 1 current sense positive input. Connect through an R-C filter to the phase-side of the channel 1 inductor. D2 CS1N A Channel 1 current sense negative input. Connect through an Rg resistor to the output-side of the channel inductor. Filter the output-side of Rg with 100 nF (typ.) to GND. A10 SOSC A Oscillator pin. It allows the switching frequency FSSW to be programmed for the single-phase section. The pin is internally set to 1.02 V, frequency for single-phase is programmed according to the resistor connected to GND or VCC with a gain of 11.5 kHz/µA. Leaving the pin floating programs a switching frequency of 230 kHz. See Section 10 on page 44 for details. Table 2. Pin description (continued) Pin no. Name Type Function |
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