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ISL62773HRZ Datasheet(PDF) 10 Page - Renesas Technology Corp |
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ISL62773HRZ Datasheet(HTML) 10 Page - Renesas Technology Corp |
10 / 37 page ISL62773 FN8263 Rev 1.00 Page 10 of 37 Dec 16, 2015 37 UGATEX High-side MOSFET gate driver portion of the programmable internal driver used for either Channel 3 of the Core VR or Channel 1 of the Northbridge VR based on the configuration state selected by the FCCM_NB resistor. Connect the UGATEX pin to the gate of the high-side MOSFET(s) for either Phase 3 of the Core VR or Phase 1 of the Northbridge VR based on the configuration state selected. 38 PHASEX Phase connection of the programmable internal driver used for either Channel 3 of the Core VR or Channel 1 of the Northbridge VR based on the configuration state selected by the FCCM_NB resistor. Current return path for the high-side MOSFET gate driver of the floating internal driver. Connect the PHASEX pin to the node consisting of the high-side MOSFET source, the low-side MOSFET drain and the output inductor of either Phase 3 of the Core VR or Phase 1 of the Northbridge VR based on the configuration state selected. 39 LGATEX Low-side MOSFET gate driver portion of floating internal driver used for either Channel 3 of the Core VR or Channel 1 of the Northbridge VR based on the configuration state selected by the FCCM_NB resistor. Connect the LGATEX pin to the gate of the low-side MOSFET(s) for either Phase 3 of the Core VR or Phase 1 of the Northbridge VR based on the configuration state selected. 40 PWM2_NB PWM output for Channel 2 of the Northbridge VR. Disabled when ISEN2_NB is tied to +5V. 41 FCCM_NB Diode emulation control signal for Intersil MOSFET Drivers. When FCCM_NB is LOW, diode emulation at the driver this pin connects to is allowed. A resistor from FCCM_NB pin to GND configures the PWM_Y and floating internal gate driver [BOOTX, UGATEX, PHASEX, LGATEX pins] to support Phase 3 of the Core VR and Phase 1 of the Northbridge VR. The FCCM_NB resistor value also is used to set the slew rate for the Core VR and Northbridge VR. 42 PGOOD_NB Open-drain output to indicate the Northbridge portion of the IC is ready to supply regulated voltage. Pull up externally to VDDP or 3.3V through a resistor. 43 COMP_NB Northbridge VR error amplifier output. A resistor from COMP_NB to GND sets the Northbridge VR offset voltage and is used to set the switching frequency for the Core VR and Northbridge VR. 44 FB_NB Output voltage feedback to the inverting input of the Northbridge controller error amplifier. 45 VSEN_NB Output voltage sense pin for the Northbridge controller. Connect to the +sense pin of the microprocessor die. 46 ISUMN_NB Inverting input of the transconductance amplifier for current monitor and load line of the Northbridge VR. 47 ISUMP_NB Noninverting input of the transconductance amplifier for current monitor and load line of the Northbridge VR. 48 ISEN1_NB Individual current sensing for Channel 1 of the Northbridge VR. If ISEN2_NB is tied to +5V, this pin cannot be left open and must be tied to GND with a 10kΩ resistor. If ISEN1_NB is tied to+5V, the Northbridge portion of the IC is shutdown. GND (Bottom Pad) Signal common of the IC. Unless otherwise stated, signals are referenced to the GND pin. Pin Descriptions (Continued) PIN NUMBER SYMBOL DESCRIPTION Ordering Information PART NUMBER (Notes 1, 2, 3) PART MARKING TEMP. RANGE (°C) PACKAGE (RoHS Compliant) PKG. DWG. # ISL62773HRZ ISL62773 HRZ -10 to +100 48 Ld 6x6 QFN L48.6x6B ISL62773IRZ ISL62773 IRZ -40 to +85 48 Ld 6x6 QFN L48.6x6B NOTES: 1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications. 2. Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL62773. For more information on MSL please see tech brief TB363. |
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