CY8CLEDAC02 Cypress Semiconductor Corp, CY8CLEDAC02 Datasheet
CY8CLEDAC02
Specifications of CY8CLEDAC02
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CY8CLEDAC02 Summary of contents
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... In PWM mode optimized dimming frequencies in the range of 900 Hz result in zero visible flicker. At the heart of a CY8CLEDAC02 based system is the chopping circuit which provides the load necessary to enable correct wall dimmer operation. It also improves PF when there is no dimmer on the line. The devices’ ...
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... Control V - VMS + V - FB_C + D ISENSE Figure 1. Simplified Application Diagram CHOPPING CIRCUIT + _ CY8CLEDAC02 1 BOOST VCC 8 OUTPUT SENSE SENSE IN GND NTC CONTROLLER CY8CLEDAC02 BOOST Boost_Out 1 65K OUTPUT Output 7 65K I + SHORT_C - 0.16V I V SENSE 6 OCP + - 1. PEAK - 0~1.8V DAC GND V PEAK 5 ISOLATED FLYBACK CONVERSION LED Page ...
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... Understanding Primary Feedback ............................. 11 Valley Mode Switching .............................................. 13 Electrical Specifications ................................................ 14 Absolute Maximum Ratings ....................................... 14 Electrical Characteristics ............................................... 15 Typical Application Diagram ......................................... 16 Typical Performance Characteristics ........................... 17 Document Number: 001-54879 Rev. *C CY8CLEDAC02 Performance Information ............................................... 18 Ordering Code Definitions ............................................. 19 Packaging Information ................................................... 20 Physical Package Dimensions .................................. 20 Acronyms ........................................................................ 21 Document Conventions ................................................. 21 Units of Measure ....................................................... 21 Document History Page ................................................. 22 Sales, Solutions, and Legal Information ...
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... Pin Information Figure 2. Pin Diagram - 8-Pin SOIC CY8CLEDAC02 Table 1. Pin Description - 8-Pin SOIC CY8CLEDAC02 Pin No. Name Type 1 BOOST Output 2 V Analog Input SENSE 3 V Analog Input Analog Input T 5 GND Ground 6 I Analog Input SENSE 7 OUTPUT Output 8 V Power Input CC – ...
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... R4 lowering the overall charging resistance. When V above V , the internal control logic gets enabled pulling the CCST V node low. The gate to source voltage across Q3 becomes IN negative, thus turning Q3 off. This technique substantially ) and low level CC reduces startup time. ) and low ON CY8CLEDAC02 VMS T PEAK ) and low level ...
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... AC line before Wall- dimmer Dimmed AC line after Wall-dimmer Document Number: 001-54879 Rev. *C CY8CLEDAC02 as an incandescent lamp, loading the dimmer with a purely resistive load enables accurate dimmer detection. The operation is broken into two stages. In the first stage, the controller simply determines whether a dimmer is present dimmer is not detected, the dimmer type is set to 'no dimmer' ...
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... LED current can be set at a nominal value and modulated using the following equation: Equation 3 V ISENSE This equation provides a mapping from the measured dimmer . RATIO phase to actual light output. t CROSS t PERIOD CY8CLEDAC02 is set to 1.0. For all other RATIO PHASE . When RATIO pin V ...
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... Trailing edge dimmer mode: Chopping circuit is active across ■ the entire dimming period (T hard on otherwise (see Figure 7. Chopping Operation (No Dimmer Mode) Figure 8. Chopper Circuit BR1 + (pin VIN (Internal) CY8CLEDAC02 VIN Figure 7) ). The CROSS 9) ). The chopper FET remains CROSS Figure 10). V CBULK BOOST (pin) R6 Page [+] Feedback ...
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... If the I sense resistor is shorted, there is a potential danger SENSE of an overcurrent condition not being detected. The CCUVL CY8CLEDAC02 has a separate circuit to detect this fault. This protection mode is triggered if the I short protection reference (V Peak Current Limit protection (PCLP) The I pin of the CY8CLEDAC02 monitors the primary peak SENSE ...
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... OCP threshold is not reached. Single Point Fault Protection The CY8CLEDAC02 can detect a short on any of the following pins OUTPUT, and V IN SENSE SENSE CC single point fault is protected against. Understanding Primary Feedback Figure 11 illustrates a simplified flyback converter. When the ...
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... Figure 12), then V is also small. With the CY8CLEDAC02, can be ignored. The real time waveform analyzer in the CY8CLEDAC02 reads the auxiliary waveform information cycle by cycle. The part then generates a feedback voltage V . The V FB_C represents the output voltage and is used to sense the output voltage ...
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... Electrical Specifications This section presents the DC and AC electrical specifications of the CY8CLEDAC02. For the most up to date electrical specifications, confirm that you have the most recent data sheet by going to the web at for -40 C T 85 C and T 125 C, except where noted. ...
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... V – 1.8 – V – 0.09 – V A – – 1 1.0V SD 100 105 – 100 – SINK – 200 – I SOURCE – 60 – ns – 60 – ns CY8CLEDAC02 Notes = 10 F VCC = 330pF L = 330pF L = 1.5 V SENSE = 5 mA Page [+] Feedback ...
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... Typical Application Diagram Document Number: 001-54879 Rev. *C CY8CLEDAC02 Page [+] Feedback ...
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... Typical Performance Characteristics Figure 14. V vs. V Supply Startup Current CC CC Figure 15. V Startup Threshold Vs. Temperature CC Document Number: 001-54879 Rev. *C CY8CLEDAC02 Figure 16. Percent Deviation of Switching Frequency to Ideal Switching Frequency With Temperature Figure 17. Internal Reference Voltage Vs. Temperature Page [+] Feedback ...
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... Figure 18. Inrush and AC Peak Current (Trailing Edge) Figure 19. Inrush and AC Peak Current (Trailing Edge) Figure 20. Inrush and AC Peak Current (Leading Edge) Document Number: 001-54879 Rev. *C CY8CLEDAC02 Figure 21. Inrush and AC Peak Current (Leading Edge) Figure 22. Inrush and AC Peak Current (No Dimmer) Figure 23. Dimming Curve ...
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... Ordering Code No. of Pins CY8CLEDAC02 Ordering Code Definitions LED AC 02 Document Number: 001-54879 Rev. *C Package 8 SOIC 02 = Dimmable AC = Offline Family Code: LED = LED Applications Technology Code CMOS ® Marketing Code PowerPSoC Family Company ID Cypress CY8CLEDAC02 Temperature Range –40 C Page [+] Feedback ...
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... PACKAGE WEIGHT 0.07 gm Document Number: 001-54879 Rev. *C Figure 14. 8-Pin Small Outline (SOIC) Package BOTTOM VIEW 1 1 0.150[3.810] 0.157[3.987] 0.228[5.792] 0.244[6.197 SEATING PLANE 0.051[1.295] 0.067[1.702] 0.004[0.102] 0.002[0.050] 0°~8° 0.006[0.152] CY8CLEDAC02 0.118[2.997] 0.126[3.200] 4 exposed 0.086[2.184] pad 0.094[2.388] 5 0.007[0.178] 0.016[0.406] 0.010[0.254] 0.050[1.270] 001-54263 *A Page [+] Feedback ...
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... Kbit 1024 bits KHz kilohertz K kilohms MHz megahertz M megaohms A microamperes F microfarads H microhenrys s microseconds V microvolts Vrms microvolts root-mean-square W microwatts CY8CLEDAC02 Symbol Unit of Measure mA milliampere ms millisecond mV millivolts mA milliwatts nA nanoamperes ns nanoseconds nV nanovolts pA picoamperes pF picofarads ps picoseconds fF ...
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... Document History Page Document Title: CY8CLEDAC02 AC-DC Controller for Dimmable LED Lighting Document Number: 001-54879 Orig. of Submission Revision ECN Change ** 2746461 KJV 07/30/09 *A 2882776 KJV/AESA 02/22/2010 *B 2901104 KJV/VED 03/29/2010 *C 3071772 KJV 10/26/2010 Sales, Solutions, and Legal Information Worldwide Sales and Design Support Cypress maintains a worldwide network of offices, solution centers, manufacturer’ ...