(ISL6612B / ISL6613B) Advanced Synchronous Rectified Buck MOSFET Drivers

® ISL6612B, ISL6613B Data Sheet July 27, 2006 FN9205.3 Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP The ISL6612B and ISL6613B are high frequency MOSFET drivers specifically designed to drive upper and lower power N-Channel MOSFETs in a synchronous rectified buck converter topology. These drivers combined with HIP63xx or ISL65xx Multi-Phase Buck PWM controllers and N-Channel MOSFETs form complete core-voltage regulator solutions for advanced microprocessors. The ISL6612B drives the upper gate to above rising VCC POR (7V), while the lower gate can be independently driven over a range from 5V to 12V. The ISL6613B drives both upper and lower gates over a range of 5V to 12V. This drivevoltage provides the flexibility necessary to optimize applications involving trade-offs between gate charge and conduction losses. These drivers are optimized for POL DC/DC Converters for IBA Systems. An advanced adaptive zero shoot-through protection is integrated to prevent both the upper and lower MOSFETs from conducting simultaneously and to minimize the dead time. These products add an overvoltage protection feature operational before VCC exceeds its turn-on threshold, at which the PHASE node is connected to the gate of the low side MOSFET (LGATE). The output voltage of the converter is then limited by the threshold of the low side MOSFET, which provides some protection to the microprocessor if the upper MOSFET(s) is shorted during initial start-up. These drivers also feature a three-state PWM input which, working together with Intersil’s multi-phase PWM controllers, prevents a negative transient on the output voltage when the output is shut down. This feature eliminates the Schottky diode that is used in some systems for protecting the load from reversed output voltage events. Features • Pin-to-pin Compatible with HIP6601 SOIC family • Dual MOSFET Drives for Synchronous Rectified Bridge • Low VCC Rising Threshold (7V) for IBA Applications. • Advanced Adaptive Zero Shoot-Through Protection - Body Diode Detection - Auto-zero of rDS(ON) Conduction Offset Effect • Adjustable Gate Voltage (5V to 12V) for Optimal Efficiency • 36V Internal Bootstrap Schottky Diode • Bootstrap Capacitor Overcharging Prevention • Supports High Switching Frequency (up to 2MHz) - 3A Sinking Current Capability - Fast Rise/Fall Times and Low Propagation Delays • Three-State PWM Input for Output Stage Shutdown • Three-State PWM Input Hysteresis for Applications With Power Sequencing Requirement • Pre-POR Overvoltage Protection • VCC Undervoltage Protection • Expandable Bottom Copper Pad for Enhanced Heat Sinking • Dual Flat No-Lead (DFN) Package - Near Chip-Scale Package Footprint; Improves PCB Efficiency and Thinner in Profile • Pb-Free Plus Anneal Available (RoHS Compliant) Applications • Optimized for POL DC/DC Converters for IBA Systems • Core Regulators for Intel® and AMD® Microprocessors • High Current DC/DC Converters • High Frequency and High Efficiency VRM and VRD Related Literature • Technical Brief TB363 “Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs)” • Technical Brief TB417 for Power Train Design, Layout Guidelines, and Feedback Compensation Design 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005-2006. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ISL6612B, ISL6613B Ordering Information PART NUMBER ISL6612BCB ISL6612BCB-T ISL6612BCBZ (Note) ISL6612BCBZ-T (Note) ISL6612BCR ISL6612BCR-T ISL6612BCRZ (Note) ISL6612BCRZ-T (Note) ISL6612BECB ISL6612BECB-T ISL6612BECBZ (Note) ISL6612BECBZ-T (Note) ISL6612BEIB ISL6612BEIB-T ISL6612BEIBZ (Note) ISL6612BEIBZ-T (Note) ISL6612BIB ISL6612BIB-T ISL6612BIBZ (Note) ISL6612BIBZ-T (Note) ISL6612BIR ISL6612BIR-T ISL6612BIRZ (Note) ISL6612BIRZ-T (Note) ISL6613BCB ISL6613BCB-T ISL6613BCBZ (Note) ISL6613BCBZ-T (Note) ISL6613BCR ISL6613BCR-T ISL6613BCRZ (Note) ISL6613BCRZ-T (Note) ISL6613BECB ISL6613BECB-T ISL6613BECBZ (Note) ISL6613BECBZ-T (Note) ISL6613BEIB ISL6613BEIB-T ISL6613BEIBZ (Note) ISL6613BEIBZ-T (Note) PART MARKING 6612BCB 6612BCB 6612BCBZ 6612BCBZ 12BC 12BC 12BZ 12BZ 6612BECB 6612BECB 6612BECBZ 6612BECBZ 6612BEIB 6612BEIB 6612BEIBZ 6612BEIBZ 6612BIB 6612BIB 6612BIBZ 6612BIBZ 12BI 12BI 2BIZ 2BIZ 6613BCB 6613BCB 6613BCBZ 6613BCBZ 13BC 13BC 13BZ 13BZ 6613BECB 6613BECB 6613BECBZ 6613BECBZ 6613BEIB 6613BEIB 6613BEIBZ 6613BEIBZ TEMP. RANGE (°C) 0 to 85 8 Ld SOIC Tape and Reel 0 to 85 8 Ld SOIC (Pb-free) M8.15 PACKAGE 8 Ld SOIC M8.15 PKG. DWG. # 8 Ld SOIC Tape and Reel (Pb-free) 0 to 85 10 Ld 3x3 DFN Tape and Reel 0 to 85 10 Ld 3x3 DFN (Pb-free) L10.3x3 10 Ld 3x3 DFN L10.3x3 10 Ld 3x3 DFN Tape and Reel (Pb-free) 0 to 85 8 Ld EPSOIC Tape and Reel 0 to 85 8 Ld EPSOIC (Pb-free) M8.15B 8 Ld EPSOIC M8.15B 8 Ld EPSOIC Tape and Reel (Pb-free) -40°C to 85°C 8 Ld EPSOIC Tape and Reel -40°C to 85°C 8 Ld EPSOIC (Pb-free) M8.15B 8 Ld EPSOIC M8.15B 8 Ld EPSOIC Tape and Reel (Pb-free) -40°C to 85°C 8 Ld SOIC Tape and Reel -40°C to 85°C 8 Ld SOIC (Pb-free) M8.15 8 Ld SOIC M8.15 8 Ld SOIC Tape and Reel (Pb-free) -40°C to 85°C 10 Ld 3x3 DFN Tape and Reel -40°C to 85°C 10 Ld 3x3 DFN (Pb-free) L10.3x3 10 Ld 3x3 DFN L10.3x3 10 Ld 3x3 DFN Tape and Reel (Pb-free) 0 to 85 8 Ld SOIC Tape and Reel 0 to 85 8 Ld SOIC (Pb-free) M8.15 8 Ld SOIC M8.15 8 Ld SOIC Tape and Reel (Pb-free) 0 to 85 10 Ld 3x3 DFN Tape and Reel 0 to 85 10 Ld 3x3 DFN (Pb-free) L10.3x3 10 Ld 3x3 DFN L10.3x3 10 Ld 3x3 DFN Tape and Reel (Pb-free) 0 to 85 8 Ld EPSOIC Tape and Reel 0 to 85 8 Ld EPSOIC (Pb-free) M8.15B 8 Ld EPSOIC M8.15B 8 Ld EPSOIC Tape and Reel (Pb-free) -40°C to 85°C 8 Ld EPSOIC Tape and Reel -40°C to 85°C 8 Ld EPSOIC (Pb-free) M8.15B 8 Ld EPSOIC M8.15B 8 Ld EPSOIC Tape and Reel (Pb-free) 2 FN9205.3 July 27, 2006 ISL6612B, ISL6613B Ordering Information (Continued) PART NUMBER ISL6613BIB ISL6613BIB-T ISL6613BIBZ (Note) ISL6613BIBZ-T (Note) ISL6613BIR ISL6613BIR-T ISL6613BIRZ (Note) ISL6613BIRZ-T (Note) PART MARKING 6613BIB 6613BIB 6613BIBZ 6613BIBZ 13BI 13BI 3BIZ 3BIZ TEMP. RANGE (°C) -40°C to 85°C 8 Ld SOIC Tape and Reel -40°C to 85°C 8 Ld SOIC (Pb-free) M8.15 PACKAGE 8 Ld SOIC M8.15 PKG. DWG. # 8 Ld SOIC Tape and Reel (Pb-free) -40°C to 85°C 10 Ld 3x3 DFN Tape and Reel -40°C to 85°C 10 Ld 3x3 DFN (Pb-free) L10.3x3 10 Ld 3x3 DFN L10.3x3 10 Ld 3x3 DFN Tape and Reel (Pb-free) NOTE: 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. Contact the factory for availability. Pinouts ISL6612BCB, ISL6613BCB (SOIC) ISL6612BECB, ISL6613BECB (EPSOIC) TOP VIEW UGATE BOOT PWM GND 1 2 3 4 GND 8 7 6 5 PHASE PVCC VCC LGATE ISL6612BCR, ISL6613BCR (10L 3x3 DFN) TOP VIEW UGATE BOOT N/C PWM GND 1 2 3 4 5 GND 10 PHASE 9 PVCC 8 7 N/C VCC 6 LGATE Block Diagram ISL6612B AND ISL6613B UVCC VCC +5V 10K PWM POR/ CONTROL 8K LOGIC PRE-POR OVP FEATURES BOOT UGATE PHASE (LVCC) PVCC UVCC = VCC FOR ISL6612B UVCC = PVCC FOR ISL6613B LGATE SHOOTTHROUGH PROTECTION GND PAD FOR DFN AND EPSOIC-DEVICES, THE PAD ON THE BOTTOM SIDE OF THE PACKAGE MUST BE SOLDERED TO THE CIRCUIT’S GROUND. 3 FN9205.3 July 27, 2006 ISL6612B, ISL6613B Typical Application - 3 Channel Converter Using ISL65xx and ISL6612B Gate Drivers +7V to +12V +5V TO 12V VCC PVCC BOOT UGATE PHASE PWM ISL6612B LGATE GND +5V TO 12V +7V to +12V +5V VCC VFB VSEN PGOOD VCC COMP PVCC PWM1 PWM2 PWM3 LGATE MAIN CONTROL ISL65xx GND PWM ISL6612B UGATE PHASE BOOT +VCORE VID ISEN1 ISEN2 FS ISEN3 GND +5V TO 12V +7V to +12V VCC PVCC BOOT UGATE ISL6612B PWM PHASE LGATE GND 4 FN9205.3 July 27, 2006 ISL6612B, ISL6613B Absolute Maximum Ratings Supply Voltage (VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15V Supply Voltage (PVCC) . . . . . . . . . . . . . . . . . . . . . . . . . VCC + 0.3V BOOT Voltage (VBOOT-GND). . . . . . . . . . . . . . . . . . . . . . . . . . . .36V Input Voltage (VPWM) . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 7V UGATE. . . . . . . . . . . . . . . . . . . VPHASE - 0.3VDC to VBOOT + 0.3V VPHASE - 3.5V (<100ns Pulse Width, 2µJ) to VBOOT + 0.3V LGATE . . . . . . . . . . . . . . . . . . . . . . GND - 0.3VDC to VPVCC + 0.3V GND - 5V (<100ns Pulse Width, 2µJ) to VPVCC + 0.3V PHASE. . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3VDC to 15VDC GND - 8V (<400ns, 20µJ) to 30V (<200ns, VBOOT-GND<36V) ESD Rating Human Body Model . . . . . . . . . . . . . . . . . . . . Class I JEDEC STD Thermal Information Thermal Resistance θJA (°C/W) θJC (°C/W) SOIC Package (Note 1) . . . . . . . . . . . . 100 N/A EPSOIC Package (Notes 2, 3). . . . . . . 50 7 DFN Package (Notes 2, 3) . . . . . . . . . . 48 7 Maximum Junction Temperature (Plastic Package) . . . . . . . . 150°C Maximum Storage Temperature Range . . . . . . . . . . . -65°C to 150°C Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300°C (SOIC - Lead Tips Only) Recommended Operating Conditions Ambient Temperature Range . . . . . . . . . . . . . . . . . . . .-40°C to 85°C Maximum Operating Junction Temperature . . . . . . . . . . . . . . 125°C Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V to 13.2V Supply Voltage Range, PVCC . . . . . . . . . . . . . . . . 5V to 12V ±10% CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stre