Inverter

13 Circuit Descriptions

13 Circuit Descriptions
13-1 Overall Block Structure
13-1-1 Power Tree

Panel Operating Board

SE16/56AL Core Operation

SE16/56AL Interface Operation

0.6WSelf-Loss

1. When the AD board is in DPMS state: 1.1 The IP has been designed so that it operates with a power consumption of less than 0.6W of. 1.2 The Scaler consumes power up to 27mA 1.3 The power tothe panel is switched off 1.4 The MCU consumes power up to 23mA. --> The total current consumption to the DPMS is less then 60mA and the total power consumption is 0.6W + 5V*60mA = 0.9W so that thetotal power consumption is less than 1W. 2. When the AD board is operating normally: 2.1 The maximum power consumption of the panel lamps is described below (It may vary depending on the panelmanufacturer) 17" : 4*(7.5mA*650mVrms)=4*4.9=19.6W 19: : 4*(7.5mA*720mVrms)=4*5.4=21.6W 2.2 The power consumption of the Panel Control board is as follows: 5V*720mA=3.6W 2.3 The power consumption of theScaler is as follows: 3.3V*245mA + 1.8V*300mA = 1.35W 2.4 The power consumption of the MCU is as follows: 5V*44mA =0.22W

13-1

13 Circuit Descriptions

13-1-2 Main Board Parts

1. Inverter: Aconversion device that converts DC rated voltage/current to high ones necessary for the panel lamp. 2. DC/DC(Regulator): General term for DC to DC converting devices. The IP board receives 5V and outputs1.8 or 3.3V that is supplied to the scaler (SE56AWL). 3. Power MosFET: The IP board receives 5V and outputs a lower voltage in DPMS mode and supplies the whole 5V for the panel operating board innormal conditions. In that case, the switching of Power MosFET is controlled by Micom. 4. Scaler: Receives the digital TMDS and analog R,G,B signals and convert them to proper resolutions using up- ordown- scaling that are transferred to the panel in the LDVS formats. 5. Crystal(Oscillator): Use one 24MHz oscillator externally to supply power to both MCU and Scaler at the same time.

6. MCU &...