Epson LQ-510 - SANPS;SANPSE Board Main Components; Tl494 (Ic20

APPENDIX
REV.-A
A.1.2 SANPS/SANPSE Board Main Components
Table A-9 shows SANPS/SANPSE board ICs.
Table A-9. SANPS/SANPSE Board ICs
Location
IC1
IC20
Name of IC
L5431
TL494
Type
Adjustable precision shunt regulator
Pulse-width modulation control
4.1.2.1 TL494 (IC20)
The TL494 provides pulse-width modulation control. Its block diagram is shown in Figure A-22.
Dead Time Control
COMPARATOR
PWM COMPARATOR
Figure A-22. TL494 Block Diagram
A-16
LQ-510