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ISL6526EVAL2 Datasheet(PDF) 6 Page - Intersil Corporation |
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ISL6526EVAL2 Datasheet(HTML) 6 Page - Intersil Corporation |
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6 / 15 page  6 Functional Pin Description 14 LEAD (SOIC) TOP VIEW 16 LEAD 5X5 (QFN) TOP VIEW VCC This pin provides the bias supply for the ISL6526. 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. These pins are used to compensate the voltage- control feedback loop of the converter. GND This pin represents the signal and power ground for the IC. Tie this pin to the ground island/plane through the lowest impedance connection available. PHASE Connect this pin to the upper MOSFET’s source. This pin is used to monitor the voltage drop across the upper MOSFET for overcurrent protection. UGATE Connect this pin to the upper MOSFET’s gate. This pin provides the PWM-controlled gate drive for the upper MOSFET. This pin is also monitored by the adaptive shoot- through protection circuitry to determine when the upper MOSFET has turned off. BOOT This pin provides ground referenced bias voltage to the upper MOSFET driver. A bootstrap circuit is used to create a voltage suitable to drive a logic-level N-Channel MOSFET. LGATE Connect this pin to the lower MOSFET’s gate. This pin provides the PWM-controlled gate drive for the lower MOSFET. This pin is also monitored by the adaptive shoot- through protection circuitry to determine when the lower MOSFET has turned off. OCSET Connect a resistor (ROCSET) from this pin to the drain of the upper MOSFET (VIN). ROCSET, an internal 20µA current source (IOCSET), and the upper MOSFET on-resistance (rDS(ON)) set the converter overcurrent (OC) trip point according to the following equation: An overcurrent trip cycles the soft-start function. GATE DRIVERS Upper Gate Source Current IUGATE-SRC VBOOT - VPHASE = 5V, VUGATE = 4V - -1 - A Upper Gate Sink Current IUGATE-SNK -1- A Lower Gate Source Current ILGATE-SRC VVCC = 3.3V, VLGATE = 4V - -1 - A Lower Gate Sink Current ILGATE-SNK -2- A PROTECTION/DISABLE OCSET Current Source IOCSET Commercial 182022 µA Industrial 16 20 22 µA Disable Threshold VDISABLE -- 0.8 V Electrical Specifications Recommended Operating Conditions, unless otherwise noted VCC = 3.3V±5% and TA = 25°C (Continued) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS 12 14 13 4 3 2 1 LGATE CPVOUT UGATE PHASE VCC BOOT GND CT1 11 7 6 5 9 8 10 CT2 OCSET FB CPGND ENABLE COMP 1 3 4 15 CPVOUT CT1 CT2 OCSET 16 14 13 2 12 10 9 11 6 57 8 PHASE VCC CPGND NC IPEAK IOCSETxROCSET rDS ON () ------------------------------------------------- = ISL6526 |
Similar Part No. - ISL6526EVAL2 |
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Similar Description - ISL6526EVAL2 |
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