Samsung samsung bn44-00177b sip1920 monitor 932mw power-inverter free download

File name samsung_bn44-00177b_sip1920_monitor_932mw_power-inverter.pdf

13 Circuit Descriptions 13 Circuit Descriptions 13-1 Overall Block Structure 13-1-1 Power Tree 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 37mA 1.3 The power to the panel is switched off 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 panel manufacturer) 4 x (7.5mA x 720mVrms)=4 x 5.4=21.6W 2.2 The power consumption of the Panel Control board is as follows: 5V x 720mA=3.6W 2.3 The power consumption of the Scaler is as follows: 3.3V x 245mA + 1.8V x 300mA = 1.35W 13-1 13 Circuit Descriptions 13-1-2 Main Board Parts 1. Inverter: A conversion device that converts DC rated voltage/current to high ones necessary 6. SCALER & EEPROM: I2C is a two-way serial for the panel lamp. bus of two lines that supports communications across the integrated circuits as well as 2. DC/DC(Regulator): General term for DC to DC between FLASH and EEPROM. converting devices. In particular, FLASH and Scaler (SE567MRH- The IP board receives 5V and outputs 1.8 or LF) use the SDR direct bus for mutual commu- 3.3V that is supplied to the scaler (SE567MRH- nications, which is an effective, speedy system LF). because it allows 4 additional address/data lines compared to the old serial systems. 3. Power MosFET: The IP board receives 5V and outputs a lower voltage in DPMS mode and 7. Function Key: A certain keystroke generates a supplies the whole 5V for the panel operating certain electrical potential, which is transferred board in normal conditions. In that case, the into ADC input port of the Scaler and then con- switching of Power MosFET is controlled by verted to a digital value by the A/D converter of Micom. the chip. The digital value (data) is a clue to which key is entered. In practical, the voltage 4. Scaler: Receives the digital TMDS and analog levels are set as below. R,G,B signals and convert them to proper reso- lutions using up- or down- scaling that are transferred to the panel in the LDVS formats. 5. Crystal(Oscillator): Use one 14.318MHz oscilla- tor externally to supply power to both MCU and Scaler at the same time. 13-2 13 Circuit Descriptions 13-1-3 IP BOARD BLOCK(POWER) Parts 13-1-4 IP BOARD BLOCK( I