DONGWOON-Power Factor Correction IC(DW8528B) for LED Lighting (Replaceable L6562)
DONGWOON-DW8528 Ordering information
Product model
| Marking ID
| Package Type
| Packing Type Supplied As
|
DW8528B
| DW8528B | SOP8
| 2500 Units on Tape & Reel
|
DONGWOON-Power Factor Correction IC(DW8528B) for LED Lighting (Replaceable L6562) General Description:
The DW8528B is an active boundary-mode power factor correction controller for AC-DC SMPS applications. The DW8528B provides the optimization method of Isolation LED Lighting. The DW 8528B is available in a thermally enhanced 8 SOIC package.
The following figure is DW8528B Block Diagram
DONGWOON-DW8528B Features :
●Boundary Mode Power Factor Correction Control；
●Improved Power Factor and THD ；
●Wide Range Supply Voltage；
●Under Voltage Lock Out；
●Extremely Low Startup Current；
●Low Quiescent Current；
●Precise Internal Reference Voltage;
●Leading Edge Blanking Circuit；
●On Chip R/C Filter on CS pin;
●Zero Current Switching；
●System Power Limit at Feedback Open；
●Supply Voltage Over Voltage Protection;
●Thermal Shutdown Protection;
●Disable Function on ZCD pin;
●600mA/+800mA Totem Pole Gate Driver;
●8 SOIC Package
DONGWOON-DW8528B Applications :
●Single Stage High PF flyback AC/DC SMPS
●LED Lighting Power
DONGWOON-DW8528B Pin Information
No.(DW8528B)
| DW8528B Pin Name | DW8528B Description |
1
| INV
| Inverting input of the error amplifier |
| 2 | COMP
| Output of the error amplifier.
|
| 3 | MULT
| Input of the multiplier stage. A resistive divider connects to this pin the rectified mains. A voltage signal, pr oportional to the rectified mains, appears on this pin. |
| 4 | CS
| Input to the comparator of the cont rol loop. The current is sensed by a resistor and the resulting voltage is applied to this pin. |
| 5 | ZCD | Zero current detection input. If it is connected to GND, the device is disabled. |
6
| GND
| Current return for driver and control circuits.
|
| 7 | DRV
| Gate driver output. A push pull output stage is able to drive the Power NMOS with peak current of +800mA/-600mA. |
| 8 | VCC
| Supply voltage of driver and control circuits. |
DONGWOON-DW8528B Typical Application Circuit
Key words: power factor correction chip, PFC, high power factor, critical conduction mode, single-stage PFC, DW8528B, replace L6562A, DONGWOON.
