ISL6269ACRZ Intersil, ISL6269ACRZ Datasheet
ISL6269ACRZ
Specifications of ISL6269ACRZ
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ISL6269ACRZ Summary of contents
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... Pb-free plus anneal available (RoHS compliant) Applications • PCI express graphical processing unit • Auxiliary power rail • VRM • Network adapter Ordering Information PART NUMBER (Note) ISL6269ACRZ* PVCC ISL6269AIRZ *Add “-T” suffix for tape and reel. PGND 10 NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets ...
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Block Diagram VIN GND PACKAGE BOTTOM VCC V REF EN − OVP + − UVP + + EA EA − FB COMP − ISEN OCP 30Ω PGOOD PWM FREQUENCY CONTROL + − + ...
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Typical Application R PGOOD 5V R VCC C C PVCC VCC R COMP C COMP1 C COMP2 R BOTTOM 3 ISL6269A ISL6269A PGOOD VIN PVCC UG VCC BOOT GND PHASE FCCM ISEN EN LG COMP PGND FB FSET VO R ...
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... ISL6269AIRZ . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +100°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp Recommended Operating Conditions Ambient Temperature Range ISL6269ACRZ . . . . . . . . . . . . . . . . . . . . . . . . . . .-10°C to +100°C ISL6269AIRZ . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +100°C Supply Voltage (VIN to GND 25V VCC to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5V ±5% PVCC to PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5V ±5% = 15V -40° ...
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Electrical Specifications These specifications apply for V All typical specifications T PARAMETER COMP Source Current COMP Sink Current COMP High Clamp Voltage COMP Low Clamp Voltage POWER GOOD PGOOD Pull-down Impedance PGOOD Leakage Current PGOOD Maximum Sink Current (Note 3) ...
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Electrical Specifications These specifications apply for V All typical specifications T PARAMETER PROTECTION ISEN OCP Threshold ISEN Short-Circuit Threshold UVP Threshold OVP Rising Threshold OVP Falling Threshold OTP Rising Threshold (Note 3) OTP Hysteresis (Note 3) NOTE: 3. Guaranteed by ...
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... Theory of Operation Modulator The ISL6269A is a hybrid of fixed frequency PWM control, and variable frequency hysteretic control. Intersil’s R technology can simultaneously affect the PWM switching frequency and PWM duty cycle in response to input voltage and output load transients. The term “Ripple” in the name “ ...
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VOUT VCC and PVCC EN PGOOD 2.75ms FIGURE 4. SOFT-START SEQUENCE The PGOOD pin indicates when the converter is capable of supplying regulated voltage. The PGOOD pin is an undefined impedance if has not reached the rising V VCC ...
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LG gate-driver pin is high, for eight consecutive PWM pulses. The converter will return to CCM on the following cycle after the PHASE pin detects negative voltage, indicating that the body diode of the low-side MOSFET is conducting ...
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... GATE DRIVERS (EQ. 7) (EQ. 8) FIGURE 6. COMPENSATION REFERENCE CIRCUIT Your local Intersil representative can provide a PC-based tool that can be used to calculate compensation network component values and help simulate the loop frequency response. The compensation network consists of the internal error amplifier of the ISL6269A and the external components ...
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... Intersil provides complete reference designs that include schematics, bills of materials, and example board layouts. Selecting the LC Output Filter The duty cycle of an ideal buck converter is a function of the input and the output voltage. This relationship is written as: V OUT ...
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MOSFET emphasizes low switch charge so that the device spends the least amount of time dissipating power in the linear region. Unlike the low-side MOSFET which has the drain-source voltage clamped by its body diode during turn off, the ...
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ISEN (Pin 9) Route the connection to the ISEN pin away from the traces and components connected to the FB pin, COMP pin, and FSET pin. LG (Pin 11) The signal going through this trace is both high dv/dt and ...
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... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...