ISL6617AFRZ-T Renesas

DATASHEET ISL6617A FN7844 Rev.2.00 PWM Doubler with Output Monitoring Feature Jun 9, 2017 The ISL6617A uses Intersils proprietary Phase Doubler Features scheme to modulate two-phase power trains with single PWM Proprietary phase doubler scheme input. It doubles the number of phases that 3.3V multiphase controllers can support. Enhanced light- to full-load efficiency The ISL6617A is designed to minimize the number of analog Double or quadruple phase count signals that interface between the controller and drivers in Patented current balancing with DCR current sensing and high phase count scalable applications. The common COMP adjustable gain signal, which is usually seen in conventional cascaded Current monitoring output (I ) to simplify system interface OUT configurations, is not required this improves noise immunity and layout and simplifies the layout. Furthermore, the ISL6617A provides low part count and low cost advantage over the conventional Triple-level enable input for mode selection cascaded technique. Dual PWM output drives for two synchronous rectified bridges with single PWM input By cascading the ISL6617A with another ISL6617 or ISL6611A, it can quadruple the number of phases that 3.3V Channel synchronization and two interleaving options multiphase controllers can support. Support 3.3V PWM input The ISL6617A also features tri-state inputs and outputs that Support 5V PWM output recognize a high-impedance state, working together with Compatible with DCR sensing or smart power stage sensing Intersil multiphase PWM controllers and driver stages to prevent negative transients on the controlled output voltage Tri-state PWM input and outputs for output stage shutdown when operation is suspended. This feature eliminates the need Overvoltage protection for the Schottky diode that may be utilized in a power system Dual Flat No-lead (DFN) package to protect the load from excessive negative output voltage damage. - Near chip-scale package footprint improves PCB utilization, thinner profile Applications - Pb-free (RoHS compliant) High current, low voltage DC/DC converters Related Literature High frequency and high efficiency VRM and VRD For a full list of related documents, visit our website High phase count and phase shedding applications - ISL6617A product page 3.3V PWM input integrated power stage or DrMOS Phase Doubler Selection Guide PART PWM PWM INTEGRATED NUMBER INPUT OUTPUT DRIVER CASCADED DEVICES COMPATIBLE CONTROLLERS ISL6617A 3.3V 5.0V N/A 5.0V PWM DrMOS/SPS 3.3V PWM digital controllers with phase doubler compatibility ISL6617, ISL6611A ISL691x7, ISL691x4, ISL691x8, ISL681x7, ISL681x4, and ISL99227B ISL6388/98 with 3.3V PWM option ISL6617 5.0V 5.0V N/A 5.0V PWM DrMOS/SPS ISL6617, ISL6611A, ISL6388/98 with 3.3V or 5V PWM option ISL99227B ISL6611A 5V N/A 5.0V Discrete MOSFET Dual FETs FN7844 Rev.2.00 Page 1 of 16 Jun 9, 2017ISL6617A Internal Block Diagram VCC 10k CSENA PWMIN CHANNEL A 5.5k CSRTNA PWMA CONTROL LOGIC PWMB EN SYNC CSENB CHANNEL B GND CSRTNB CURRENT IOUT BALANCE BLOCK FIGURE 1. BLOCK DIAGRAM Ordering Information PART NUMBER PART TEMP. RANGE PACKAGE PKG. (Notes 1, 2, 3) MARKING (C) (RoHS COMPLIANT) DWG. ISL6617AFRZ 17AF -40 to +125 10 Ld 3x3 DFN L10.3x3 NOTES: 1. Add -T suffix for 6k unit tape and reel option. Refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is 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), see product information page for ISL6617A. For information on MSL see techbrief TB363. FN7844 Rev.2.00 Page 2 of 16 Jun 9, 2017