STEVAL-CBL004V1

STEVAL-CBL004V1 Power supply demonstration board for LNB based on the LNBH24 Data brief Features ■ Complete interface between LNBs and I2C bus ■ Built-in DC-DC converter for single 12 V supply operation (8 - 15 volt Vin range) and high efficiency (typ. 93%@0.5 A) ■ Compliant with main satellite receiver output voltage specifications ■ Accurate 22 kHz tone generator supports bidirectional DiSEqC™ 2.0 and meets widely accepted standards (patent pending) ■ Fast oscillator startup facilitates DiSEqC™ encoding ■ Overload and overtemperature internal protection with I2C diagnostic bits ■ Output voltage and output current level diagnostic feedback through I2C bits ■ LNB short-circuit dynamic protection ■ +/- 4 kV ESD tolerant on output power pins ■ RoHS compliant ) s ( ct u d o r P e let STEVAL-CBL004V1 o s b with a single input voltage supply in the range of 8 V to 15 V. O ) s ( t c u d o r P e Description t e l o The STEVAL-CBL004V1 demonstration board implements a DC-DC converter based on the LNBH24 dual LNB supply and control IC with step-up and I2C interface. s b O This simple, cost-effective design represents an integrated solution for supplying/interfacing two independent LNB down-converters in satellite antenna dishes. It provides good performance with a minimum of external components. The STEVAL-CBL004V1 includes all the functions needed for the design of dual tuner STBs, with supplying/interfacing functions that are compliant with the international standards. It features an I2C bus interface and, thanks to the fully integrated step-up DC-DC converter, it works April 2010 Doc ID 15239 Rev 1 For further information contact your local STMicroelectronics sales office. 1/4 www.st.com 4 Schematic diagram 1 STEVAL-CBL004V1 Schematic diagram Figure 1. STEVAL-CBL004V1 circuit schematic ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O 2/4 Doc ID 15239 Rev 1 STEVAL-CBL004V1 2 Revision history Revision history Table 1. Document revision history Date Revision 26-Apr-2010 1 Changes Initial release. ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O Doc ID 15239 Rev 1 3/4 STEVAL-CBL004V1 ) s ( ct Please Read Carefully: u d o Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. r P e All ST products are sold pursuant to ST’s terms and conditions of sale. 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