DATASHEET ISL6558 FN9027 Rev 13.00 Multi-Purpose Precision Multi-Phase PWM Controller With Optional Active Voltage August 28, 2015 Positioning The ISL6558 is a multi-phase PWM controller, which in Features combination with the HIP6601B, HIP6602B, HIP6603B, or Pb-Free Plus Anneal Available (RoHS Compliant) ISL6605 companion gate drivers form a complete solution Multi-Phase Power Conversion for high-current, high slew-rate applications. The ISL6558 - 2-, 3-, or 4-Phase Operation regulates output voltage, balances load currents and provides protective functions for two to four synchronous Optional Output Voltage Droop rectified buck converter channels. Precision Channel-Current Balance A novel approach to current sensing is used to reduce Lossless Current Sensing overall solution cost and improve efficiency. The voltage Precision Reference Voltage developed across the lower MOSFET during conduction is - 0.8V 1.5% Over -40C - 85C Range sampled and fed back to the controller. This lossless - 0.8V 1.0% Over 0C - 70C Range current-sensing approach enables the controller to maintain Fast Transient Response phase-current balance between the power channels, provide Overcurrent and Overvoltage Protection overcurrent protection, and permit droop compensation. Digital Soft-start Optional output voltage droop or active voltage positioning Power Good Indication is supported via the DROOP pin. Taking advantage of this High Ripple Frequency (80kHz to 1.5MHz) feature reduces the size and cost of the output capacitors required to support a load transient. QFN Package - Compliant to JEDEC PUB95 MO-220 QFN-Quad Flat In the event of an overvoltage, the controller monitors and No Leads-Product Outline responds to reduce the risk of damage to load devices. - Near Chip-Scale Package Footprint Improves PCB Undervoltage conditions are indicated through a PGOOD Efficiency and Thinner in Profile transition. Overcurrent conditions cause the converter to shutdown limiting the exposure of load devices. These Applications integrated monitoring and protection features provide a safe environment for microprocessors and other advanced low Power Supply Control for Microprocessors voltage circuits. Low Output Voltage, High Current DC-DC Converters Voltage Regulator Modules Servers and Workstations Memory and Accelerated Graphics Port Supplies Communication Processor and Personal Computer Peripherals Pinouts ISL6558 (20 LEAD 5X5 QFN) ISL6558 (16 LEAD SOIC) TOP VIEW TOP VIEW V 1 16 PWM4 CC 20 19 18 17 16 PGOOD 2 15 ISEN4 COMP 3 14 ISEN1 COMP 1 15 ISEN1 DROOP 4 13 PWM1 14 N/C 2 PWM1 FB 5 12 PWM2 VSEN 6 11 ISEN2 DROOP 3 13 PWM2 FS/EN 7 10 ISEN3 FB 4 12 ISEN2 GND 8 9 PWM3 VSEN 5 11 ISEN3 67 89 10 FN9027 Rev 13.00 Page 1 of 17 August 28, 2015 N/C PGOOD FS/EN VCC GND VCC GND PWM4 PWM3 ISEN4ISL6558 Ordering Information TEMP. PKG. PART NUMBER (C) PACKAGE DWG. ISL6558CBZA (Note) 0 to 70 16 Ld SOIC (Pb-free) M16.15 ISL6558CBZA-T (Note) 16 Ld SOIC Tape and Reel (Pb-free) M16.15 ISL6558CRZ (Note) 0 to 70 20 Ld 5x5 QFN (Pb-free) L20.5x5 ISL6558CRZ-T (Note) 20 Ld 5x5 QFN Tape and Reel L20.5x5 (Pb-free) ISL6558CRZA (Note) (No longer 0 to 70 20 Ld 5x5 QFN (Pb-free) L20.5x5 available, Recommended Replacement ISL6558CRZ) ISL6558CRZA-T (Note) (No longer 20 Ld 5x5 QFN Tape and Reel L20.5x5 available, Recommended (Pb-free) Replacement ISL6558CRZ) ISL6558IBZ (Note) -40 to 85 16 Ld SOIC M16.15 (No longer available, Recommended (Pb-free) Replacement ISL6558CBZA) ISL6558IBZ-T 16 Ld SOIC Tape and Reel M16.15 (Note) (No longer available, (Pb-free) Recommended Replacement ISL6558CBZA) ISL6558IRZ (Note) -40 to 85 20 Ld 5x5 QFN (Pb-free) L20.5x5 ISL6558IRZ-T (Note) 20 Ld 5x5 QFN Tape and Reel L20.5x5 (Pb-free) ISL6558IRZA (Note) -40 to 85 20 Ld 5x5 QFN (Pb-free) L20.5x5 ISL6558IRZA-T (Note) 20 Ld 5x5 QFN Tape and Reel L20.5x5 (Pb-free) ISL6558EVAL2Z Evaluation Board 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. FN9027 Rev 13.00 Page 2 of 17 August 28, 2015