ISL6526A Intersil Corporation, ISL6526A Datasheet
ISL6526A
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ISL6526A Summary of contents
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... Data Sheet Single Synchronous Buck Pulse-Width Modulation (PWM) Controller The ISL6526, ISL6526A make simple work out of implementing a complete control and protection scheme for a DC/DC stepdown converter. Designed to drive N-Channel MOSFETs in a synchronous buck topology, the ISL6526, ISL6526A integrate the control, output adjustment, monitoring and protection functions into a single package ...
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... ISL6526 SOIC Evaluation Board ISL6526EVAL2 ISL6526 QFN Evaluation Board ISL6526AEVAL1 ISL6526A SOIC Evaluation Board ISL6526AEVAL2 ISL6526A QFN Evaluation Board *Add “-T” suffix for tape and reel. 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 ...
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... Typical Application - 3.3V Input 3. PUMP DISABLE 3 ISL6526, ISL6526A VCC OCSET CT1 CPVOUT ISL6526, ISL6526A D BOOT CT2 BOOT CPGND C BOOT UGATE GND PHASE ENABLE LGATE COMP OFFSET C BULK R OCSET C DCPL OUT C OUT OUT FN9055 ...
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... V IN N/C DISABLE Block Diagram VCC CT1 CHARGE PUMP CT2 CPGND OCSET 20μ COMP 4 ISL6526, ISL6526A VCC OCSET CT1 CPVOUT ISL6526, ISL6526A D BOOT CT2 BOOT CPGND C BOOT UGATE GND PHASE ENABLE LGATE COMP OFFSET CPVOUT POWER-ON RESET (POR) ...
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... Lead Tips Only) For Recommended soldering conditions see Tech Brief TB389. SYMBOL TEST CONDITIONS I BIAS POR Commercial Industrial ISL6526C, Commercial OSC IC = ISL6526I, Industrial IC = ISL6526AC, Commercial IC = ISL6526AI, Industrial ΔV OSC V REF 3.3V, No Load CPVOUT VCC Guaranteed by Design GBWP SR Commercial Industrial θ ...
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... VCC This pin provides the bias supply for the ISL6526, ISL6526A. Connect a well-decoupled 3.3V supply to this pin. COMP and FB COMP and FB are the available external pins of the error amplifier. The FB pin is the inverting input of the internal error amplifier and the COMP pin is the error amplifier output ...
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... MOSFETs are not ON simultaneously. The adaptive shoot-through protection utilized by the ISL6526, ISL6526A look at the lower gate drive pin, LGATE, and the upper gate drive pin, UGATE, to determine whether a MOSFET OFF. If the voltage from UGATE or from LGATE to GND is less than 0.8V, then the respective MOSFET is defined as being OFF and the complementary MOSFET is turned ON ...
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... Current Sinking The ISL6526, ISL6526A incorporate a MOSFET shoot- through protection method which allows a converter to sink current as well as source current. Care should be exercised when designing a converter with the ISL6526, ISL6526A when it is known that the converter may sink current. V (2.5V) OUT ...
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... ISL6526, ISL6526A FIGURE 4. PRINTED CIRCUIT BOARD POWER PLANES The switching components should be placed close to the ISL6526, ISL6526A first. Minimize the length of the connections between the input capacitors, C placing them nearby. Position both the ceramic and bulk input capacitors as close to the upper MOSFET drain as possible. ...
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... ESR x C 2π The compensation network consists of the error amplifier (internal to the ISL6526, ISL6526A) and the impedance networks Z and Z . The goal of the compensation IN FB network is to provide a closed loop transfer function with the highest 0dB crossing frequency (f 0dB margin ...
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... Component Selection Guidelines Charge Pump Capacitor Selection A capacitor across pins CT1 and CT2 is required to create the proper bias voltage for the ISL6526, ISL6526A when operating the IC from 3.3V. Selecting the proper capacitance value is important so that the bias current draw and the current required by the MOSFET gates do not overburden the capacitor ...
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... MOSFET’s body diode. The gate-charge losses are dissipated by the ISL6526, ISL6526A and don't heat the MOSFETs. However, large gate- charge increases the switching interval, t the MOSFET switching losses. Ensure that both MOSFETs are ...
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... MOSFET and taken into consideration when calculating the minimum bootstrap capacitance. is BOOT1 ISL6526, ISL6526A DC/DC Converter Application Circuit Figure 8 shows an application circuit of a DC/DC Converter. Detailed information on the circuit, including a complete Bill- of-Materials and circuit board description, can be found in Application Note AN9994 ...
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... The lead width “B”, as measured 0.36mm (0.014 inch) or greater above the seating plane, shall not exceed a maximum value of 0.61mm (0.024 inch). 10. Controlling dimension: MILLIMETER. Converted inch dimensions are not necessarily exact. 14 ISL6526, ISL6526A M14.15 (JEDEC MS-012-AB ISSUE C) 14 LEAD NARROW BODY SMALL OUTLINE PLASTIC M B ...
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... 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. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 15 ISL6526, ISL6526A L16.5x5B 16 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE (COMPLIANT TO JEDEC MO-220VHHB ISSUE C) ...