ISL6744ABZ Intersil, ISL6744ABZ Datasheet
ISL6744ABZ
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ISL6744ABZ Summary of contents
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... Ld MSOP (Note) (Pb-free) ISL6744AB -40 to 105 8 Ld SOIC ISL6744ABZ -40 to 105 8 Ld SOIC (Note) (Pb-free) 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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Internal Architecture V DD UVLO + - INTERNAL BG OT SHUTDOWN 130 - 150 C GND R 2 RTD V BIAS 160 PEAK 2 VALLEY 0 ...
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Typical Application using ISL6744 - 48V Input DC Transformer, 12V @ 8A Output VIN CR3 VIN- R7 TP6 C13 TP1 R10 T2 QL C14 CR1 R5 U4 TP4 ISL6700 ...
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Absolute Maximum Ratings Supply Voltage GND - 0.3V to +20.0V DD OUTA, OUTB . . . . . . . ...
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Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application schematic. 9V < 25°C (Continued) A PARAMETER OSCILLATOR Charge Current R Voltage TD Discharge Current Gain C Valley Voltage T C Peak ...
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Typical Performance Curves 0.01 0.02 0.03 0.04 0.05 0.06 RTD CURRENT (mA) FIGURE 1. OSCILLATOR CT DISCHARGE CURRENT GAIN 600 500 400 300 200 100 0 100 200 300 400 500 600 CT (pF) ...
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Pin Descriptions the power connection for the IC. To optimize DD DD noise immunity, bypass V to GND with a ceramic DD capacitor as close to the V and GND pins as possible. DD The total ...
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Soft-Start Operation The ISL6744 features a soft-start using an external capacitor in conjunction with an internal current source. Soft-start reduces stresses and surge currents during start-up. The oscillator capacitor signal compared to the T soft-start voltage, SS, ...
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FIGURE 6. TRANSFORMER SCHEMATIC Transformer Design The design of a transformer for a half-bridge application is a straightforward affair, although iterative process of many compromises, and even ...
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The next step is to determine the equivalent wire gauge for the planar structure. Since each secondary winding conducts for only 50% of the period, the RMS current ...
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FIGURE 7C. INT. LAYER 2: 2 TURNS PRIMARY WINDING FIGURE 7D. INT. LAYER 3: 2 TURNS PRIMARY WINDING FIGURE 7E. INT. LAYER 4: 1 TURN SECONDARY WINDING FIGURE 7F. BOTTOM LAYER: 1 TURN SECONDARY AND SR WINDINGS 11 ISL6744 ∅0.358 ...
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The RMS current through each primary side FET can be determined from EQ. 10, substituting 5A of primary current for I (assuming 100% duty cycle). The result is 3.5A OUT RMS. Fairchild FDS3672 FETs, rated at 100V and 7.5A (r ...
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To minimize the output impedance of the filter, a SANYO OSCON 16SH150M capacitor in parallel with a 22μF ceramic capacitor were selected. Current Limit Threshold The current limit threshold ...
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INPUT VOLTAGE (V) FIGURE 12. LINE REGULATION AT I Waveforms Typical waveforms can be found in the following Figures. Figure 13 shows the output voltage ripple ...
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Component List REFERENCE DESIGNATOR VALUE C1 1.0µF Capacitor, 1812, X7R, 100V, 20% C2, C3 3.3µF Capacitor, 1812, X5R, 50V, 20% C4 1.0µF Capacitor, 0805, X5R, 16V, 10% C5 0.1µF Capacitor, 0603, X7R, 16V, 10% C6, C15 4.7µF Capacitor, 0805, X5R, ...
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... Resistor, 0805, 1% R10 18 Resistor, 2512, 1% R11 100 Resistor, 0603, 1% R12 10.0K Resistor, 0603 Custom Midcom 31718 T2 Custom Midcom 31719R TP1, TP2, TP4, 5002 Keystone TP5, TP6 SP1 Tektronix Scope Jack, 131-4353-00 U1 Intersil ISL6744AU, MSOP8 U4 Intersil ISL6700IB, SOIC 16 ISL6744 DESCRIPTION FN9147.8 September 22, 2005 ...
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Mini Small Outline Plastic Packages (MSOP -B- INDEX 1 2 0.20 (0.008) AREA TOP VIEW 0.25 (0.010) GAUGE PLANE SEATING PLANE - 0.10 (0.004) b -H- - 0.20 (0.008) SIDE VIEW 0.20 ...
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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 ...