CPC9909DB
CPC9909DB Datasheet
Figure CPC9909 Evaluation Board, Top View
| Part | Datasheet |
|---|---|
CPC9909DB |
CPC9909DB (pdf) |
| Related Parts | Information |
|---|---|
CPC9909-EVAL |
CPC9909-EVAL |
| PDF Datasheet Preview |
|---|
| Specifications Parameter Input Voltage AC DC Load Current Efficiency Min Typ Max Unit 265 Vrms 375 VDC 350 mA WARNING! This demonstration board must be powered through an isolation transformer before connecting any external AC instrumentation Figure CPC9909 Evaluation Board, Top View CPC9909EB Hi-Brightness, Off-Line LED Driver Evaluation Board User’s Guide Introduction Clare's CPC9909 Evaluation Board contains all the necessary circuitry to demonstrate all the features of CPC9909 High Brightness HB , Off-Line LED driver. The CPC9909 IC architecture includes pulse frequency modulation PFM with a constant peak-current control scheme. This regulation scheme is inherently stable, allowing the driver to operate above 50% duty cycle without open-loop instability or sub-harmonic oscillations. This greatly increases the number of LEDs in series that can be driven by the CPC9909 and by this Evaluation Board. Linear LED dimming can be achieved either by adjusting the on-board potentiometer, RA1, or by adjusting the voltage at the LD pin. In addition, PWM dimming can be achieved with a user-applied TTL-level, low frequency, pulse-width-modulated square wave signal between JP1-1 GND and JP1-2 connected to the PWMD pin of the CPC9909 . 90VAC to 265VAC External Power LED - 350mA max LED + VDD Monitor RA1 - External Current Sense Threshold Adj. JP1 - External PWMD Control Input LD Monitor CPC9909EB-R01 CPC9909 Evaluation Board User’s Guide Setup. 3 CPC9909 Evaluation Board Schematic 3 Demo Board Connection Descriptions. 3 CPC9909 Evaluation Board Bill of Materials 4 Performance. 5 Typical Output Waveforms. 5 PC Board Layout Considerations 5 PC Board Layout 6 CPC9909 Evaluation Board User’s Guide Setup CPC9909 Evaluation Board Schematic FUSE F2 265VAC max EXT. POWER VIN NTC1 DF04S D1 BYV26B C1 0.1uF 400V LED+ LED CONNECTION LED- 4.7mH IXTA8N50N R1 402kΩ C2 22uF 400V CPC9909 |
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