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L6759D Datasheet(PDF) 10 Page - STMicroelectronics |
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L6759D Datasheet(HTML) 10 Page - STMicroelectronics |
10 / 51 page Pin description and connection diagrams L6759D 10/51 Doc ID 023240 Rev 1 8CS2N 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. 9CS2P Channel 2 current sense positive input. Connect through an R-C filter to the phase-side of the channel 2 inductor. 10 CS1P Channel 1 current sense positive input. Connect through an R-C filter to the phase-side of the channel 1 inductor. 11 CS1N 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. 12 SOSC Oscillator pin. It allows the programming of the switching frequency FSSW for the sin- gle-phase section. The pin is internally set to 1.02 V, frequency for sin- gle-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 for details. 13 TM Thermal monitor sensor. Connect with the proper network embedding NTC to the multi-phase power section. The IC senses the power section temperature and uses the information to define the VR_HOT signal and temperature zone reg- ister. By programming proper TCOMP gain, the IC also implements load-line thermal compensation for the multi-phase section. In JMode, the pin disables the single-phase section if shorted to GND. Pull up to VCC5 with 1 k Ω to disable the thermal sensor. See Section 6 for details. 14 SPWM / SEN PWM output. Connect to single-phase external driver PWM input. During normal operations the device is able to manage HiZ status by setting and hold- ing the SPWM pin to a fixed voltage defined by PWMx strapping. Connect to VCC5 with 1 k Ω to disable the single-phase section. 15 VR_HOT Voltage regulator HOT. Open drain output, this is an alarm signal asserted by the controller when the temperature sensed through the TM pin exceeds TMAX (active low). See Section 6 for details. 16 TCOMP Thermal monitor sensor gain. Connect the proper resistor divider between VCC5 and GND to define the gain to apply to the signal sensed by TM to implement thermal com- pensation for the multi-phase section. Short to GND to disable tempera- ture compensation (but not thermal monitor). See Section 6 for details. 17 SCSP Single-phase section current sense positive input. Connect through an R-C filter to the phase-side of the channel 1 inductor. 18 SCSN Single-phase section 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. Table 2. Pin description (continued) Pin# Name Function |
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