EVAL6569 STMicroelectronics, EVAL6569 Datasheet - Page 12

• Manufacturer Part Number: EVAL6569
• Description: BOARD EVAL LIGHTING L6569
• Manufacturer: STMicroelectronics
• Type: Charge Pumpsr

Specifications of EVAL6569

• Mfg Application Notes: L6569, AN880 App Note
• Main Purpose: Lighting, Ballast Control
• Embedded: No
• Utilized Ic / Part: L6569
• Primary Attributes: 18 W, Optimized for a CF18DT/E/830, 120 or 230 VAC
• Secondary Attributes: Preheating Done with a PTC
• Input Voltage: 230 V
• Product: Power Management Modules
• Supply Current: 0.17 A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: L6569
• Other names: 497-4738

AN880 APPLICATION NOTE
Figure 24: PCB Layout of the board.
Figure 25: PCB component placement diagram.
The resonant choke
The inductance of the choke is 2.4 mH with a
minimum saturation current of 0.65 A. In the prac-
tical example it has been done with:
Core: Thomson LCC E2006 material B4;
Air gap: 2 spacers of 0.4 mm each (total 0.8 mm);
AL = 75 nH;
Bobbin: HC2006BA-06;
Number of turns: 175;
Measured saturation current: 1 A peak @ 25 °C;
12/14
Customization of the board
Some flexibility is added to the board to extend its
evaluation. The MOSFETs have two foot prints to
mount either I-PAK or TO220 packages. And two
choke footprints are also avalaible for E1905A
and E2006A magnetic cores.
Comp.
Side
Copper
Side