CPC9909-EVAL

CPC9909-EVAL Datasheet


Figure CPC9909 Evaluation Board, Top View

Part Datasheet
CPC9909-EVAL CPC9909-EVAL CPC9909-EVAL (pdf)
Related Parts Information
CPC9909DB CPC9909DB CPC9909DB
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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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Datasheet ID: CPC9909-EVAL 523321