ISL6596IRZ Renesas

DATASHEET ISL6596 FN9240 Rev.3.00 Synchronous Rectified MOSFET Driver May 30, 2018 The ISL6596 is a high frequency, MOSFET driver optimized to Features drive two N-Channel power MOSFETs in a synchronous buck Drives two N-Channel MOSFETs converter topology. Combine this driver with the Renesas Multi-Phase Buck PWM controllers to form a complete Adaptive shoot-through protection single-stage core-voltage regulator solution with high 0.4 on-resistance and 4A sink current capability efficiency performance at high switching frequency for Supports high switching frequency advanced microprocessors. Fast output rise and fall time The IC is biased by a single low voltage supply (5V), minimizing driver switching losses in high MOSFET gate capacitance and Low tri-state hold-off time (20ns) high switching frequency applications. Each driver can drive a Supports 3.3V and 5V PWM inputs 3nF load with less than 10ns rise/fall time. Bootstrapping of Low quiescent supply current the upper gate driver is implemented with an internal low forward drop diode, reducing implementation cost, complexity, Power-On reset and allowing the use of higher performance, cost effective Expandable bottom copper pad for heat spreading N-Channel MOSFETs. Adaptive shoot-through protection is Dual Flat No-Lead (DFN) package integrated to prevent both MOSFETs from conducting simultaneously. - Compliant to JEDEC PUB95 MO-220 QFN-Quad Flat No Leads - product outline The ISL6596 features 4A typical sink current for the lower gate - Near chip-scale package footprint improves PCB driver, enhancing the lower MOSFET gate hold-down capability efficiency and is thinner in profile during the PHASE node rising edge and preventing power loss caused by the self turn-on of the lower MOSFET due to the high Pb-Free (RoHS compliant) dV/dt of the switching node. The ISL6596 also features an input that recognizes a high-impedance state, working with Renesas multi-phase 3.3V or 5V PWM controllers to prevent negative transients on the controlled output voltage when operation is suspended. This feature eliminates the need for the Schottky diode that may be used in a power system to protect the load from negative output voltage damage. Applications Core voltage supplies for Intel and AMD microprocessors High frequency low profile high efficiency DC/DC converters High current low voltage DC/DC converters Synchronous rectification for isolated power supplies Related Literature For a full list of related documents, visit our website ISL6596 product page FN9240 Rev.3.00 Page 1 of 13 May 30, 2018ISL6596 Typical Application V IN +5V +3.3V BOOT VCC +3.3V FB COMP VCTRL R UGPH VCC UGATE VSEN PWM PWM1 ISL6596 PGOOD PWM2 PHASE LGATE PWM CONTROLLER (ISL69XX) VID ISEN1 +V CORE (OPTIONAL) +5V V ISEN2 IN BOOT VCC FS/EN R VCTRL UGPH GND UGATE PWM ISL6596 PHASE LGATE R IS REQUIRED FOR SPECIAL POWER SEQUENCING APPLICATIONS UGPH FIGURE 1. MULTI-PHASE CONVERTER USING ISL6596 GATE DRIVERS (SEE APPLICATION INFORMATION ON PAGE 9) Block Diagram VCC BOOT VCTRL UGATE PHASE SHOOT- THROUGH 7k PROTECTION CONTROL VCC PWM LOGIC LGATE 7k GND VCTRL = CONTROLLER VCC FIGURE 2. BLOCK DIAGRAM FN9240 Rev.3.00 Page 2 of 13 May 30, 2018