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ISL6753AAZA Datasheet(PDF) 1 Page - Intersil Corporation |
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ISL6753AAZA Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 15 page 1 ® ISL6753 ZVS Full-Bridge PWM Controller The ISL6753 is a high-performance, low-pin-count alternative zero-voltage switching (ZVS) full-bridge PWM controller. Like the ISL6551, it achieves ZVS operation by driving the upper bridge FETs at a fixed 50% duty cycle while the lower bridge FETS are trailing-edge modulated with adjustable resonant switching delays. Compared to the more familiar phase-shifted control method, this algorithm offers equivalent efficiency and improved overcurrent and light- load performance with less complexity in a lower pin count package. This advanced BiCMOS design features low operating current, adjustable oscillator frequency up to 2MHz, adjustable soft-start, internal over temperature protection, precision deadtime and resonant delay control, and short propagation delays. Additionally, Multi-Pulse Suppression ensures alternating output pulses at low duty cycles where pulse skipping may occur. Features • Adjustable Resonant Delay for ZVS Operation • Voltage- or Current-Mode Operation • 3% Current Limit Threshold • 175 µA Startup Current • Supply UVLO • Adjustable Deadtime Control • Adjustable Soft-Start • Adjustable Oscillator Frequency Up to 2MHz • Tight Tolerance Error Amplifier Reference Over Line, Load, and Temperature • 5MHz GBWP Error Amplifier • Adjustable Cycle-by-Cycle Peak Current Limit • Fast Current Sense to Output Delay • 70ns Leading Edge Blanking • Multi-Pulse Suppression • Buffered Oscillator Sawtooth Output • Internal Over Temperature Protection • Pb-free and ELV, WEEE, RoHS Compliant Applications • ZVS Full-Bridge Converters • Telecom and Datacom Power • Wireless Base Station Power • File Server Power • Industrial Power Systems Ordering Information PART NUMBER TEMP. RANGE (°C) PACKAGE PKG. DWG. # ISL6753AAZA (See Note) -40 to 105 16 Ld QSOP (Pb-free) M16.15A Add -T suffix to part number for tape and reel packaging NOTE: Intersil Pb-free 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. Pinout ISL6753 (QSOP) TOP VIEW RTD SS CT OUTUR OUTUL CTBUF OUTLR RESDEL RAMP OUTLL FB VDD VERR VREF CS GND 1 2 4 3 5 6 7 89 10 11 12 13 14 15 16 Data Sheet March 10, 2005 FN9182.1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-352-6832 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved All other trademarks mentioned are the property of their respective owners. |
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