ISL6745ALEVAL3Z Intersil, ISL6745ALEVAL3Z Datasheet
ISL6745ALEVAL3Z
Specifications of ISL6745ALEVAL3Z
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ISL6745ALEVAL3Z Summary of contents
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... ISL6745ALEVAL3Z: TRIAC Dimmer Compatible ® Application Note Abstract The ISL6745ALEVAL3Z is a low cost, high performance LED driver with power factor correction function, and is compatible with the widely used wall dimmers. It uses Intersil’s voltage mode PWM controller ISL6745A to operate a SEPIC converter in discontinuous conduction mode (DCM) ...
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FIGURE 2. TOP AND BOTTOM VIEW OF LED DRIVER Circuit Description Unlike the active power factor correction converters, a voltage follower works in discontinuous conduction mode with comparatively constant duty ratio (D) within each utility cycle. There is no need ...
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PHASE WIDTH OF TRIAC (MS) FIGURE 5. AVERAGE VOLTAGE vs ANGLE OF A TRIAC DIMMER The schematic diagram of the current reference ...
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... PCB layouts. Gerber files for the ISL6745ALEVAL3Z board are available upon request. The performance of the LED driver board will be evaluated with and without dimmer respectively in the next sessions for various operation conditions. FIGURE 10. TOP VIEW OF THE PCB LAYOUT FIGURE 11 ...
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V/INPUT C1: VIN 100V/DIV C4: IIN 200mA/DIV I/INPUT FIGURE 13. INPUT VOLTAGE AND CURRENT @ 110V C1: VIN 100V/DIV V/INPUT C4: IIN 200mA/DIV I/INPUT FIGURE 14. INPUT VOLTAGE AND CURRENT @ 90V C1: VIN 100V/DIV V/INPUT C4: IIN 200mA/DIV I/INPUT ...
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Typical Performance Characteristics with Dimmer See “Schematic With/Without Triac Dimming Compatible” on page 8, tables 5 and 6. Connect the P1 and P2 of the LED driver board to the AC power supply. A string of 6 Cree high power ...
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... ISL6745A datasheet, Intersil Corporation 2. ISL5420 datasheet, Intersil Corporation 3. ISL6745EVAL2Z Offline High Brightness White LED C4: IIN 200mA/DIV Driver With High Power Factor for Universal Input, Intersil Corporation application note: AN1411 4. Z. Ye, et al, “Design Considerations of a High Power Factor SEPIC Converter for High Brightness White LED Lighting Applications,” ...
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Schematic With/Without Triac Dimming Compatible ...
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... TABLE 5. ISL6745ALEVAL3Z NON-ISOLATED LED ADAPTOR WITHOUT TRIAC DIMMING NO. QTY. REFERENCE VALUE 1 1 CR1 CR2 CR3 BAT54C 4 1 CR4 BAT54 5 2 C1, C2 0.1µ 22nF 47nF DNP 2.2µ C7, C27 47µ C8, C9 1800µ C10, C24, C29 0.1µ C12 220nF 14 1 C13 ...
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... TABLE 5. ISL6745ALEVAL3Z NON-ISOLATED LED ADAPTOR WITHOUT TRIAC DIMMING (Continued) NO. QTY. REFERENCE VALUE 40 1 R15 51.1Ω R16 DNP 42 1 R17 0.18Ω R18 3.01MΩ R19 2kΩ R21 10kΩ R22 1kΩ R23, R24, R27, 10.0kΩ R28, R31, R32 48 1 R25 14.0kΩ ...
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... TABLE 6. ISL6745ALEVAL3Z NON-ISOLATED LED ADAPTOR WITH TRIAC DIMMING NO. QTY. REFERENCE VALUE 1 1 CR1 CR2 CR3 BAT54C 4 1 CR4 BAT54 5 2 C1, C2 0.1µ 22nF 47nF DNP 2.2µ C7, C27 47µ C8, C9 1800µ C10, C24, C29 0.1µ C12 220nF 14 1 C13 ...
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... TABLE 6. ISL6745ALEVAL3Z NON-ISOLATED LED ADAPTOR WITH TRIAC DIMMING (Continued) NO. QTY. REFERENCE VALUE 40 1 R15 51.1Ω R16 DNP 42 1 R17 0.18Ω R18 3.01MΩ R19 2kΩ R21 10kΩ R22 1kΩ R23, R24, 10.0kΩ R27, R28, R31, R32 48 1 R25 14.0kΩ ...