STEVAL-CBL005V1

STEVAL-CBL005V1 LNB power supply demonstration board based on the LNBH23 Data brief Features ■ Integrated DC-DC converter ■ Single input supply voltage: from 8 V to 15 V ■ I2C™ bus interface for the IC control and diagnostics ■ Integrated 22 kHz tone generator, factorytrimmed in accordance with widely accepted standards ■ User-friendly graphical user interface ("LNBxxx control suite") software included in the kit ■ Implements the LNBH23 in a QFN32 package Description STEVAL-CBL005V1 The STEVAL-CBL005V1 LNB power supply demonstration board implements a DC-DC converter based on the LNBH23 device. The LNBH23 is an LNB supply and control IC with step-up and an I2C interface. It is used to power an LNB on a dish antenna for reception of satellite TV signals. The LNBH23 is an integrated solution for supplying/interfacing satellite LNB modules in accordance with international standards. This solution is simple, inexpensive, shows very good performance and has a low external component count. The LNBH23 demonstration board includes an I2C™ bus interface and an internal 22 kHz tone generator that is factory-trimmed to comply with widely accepted standards, and can be controlled through the DSQIN pin (TTL compatible). This allows immediate DiSEqC™ data encoding. Due to the fully integrated step-up DC-DC converter, it works with a single input voltage supply source ranging from 8 V to 15 V. April 2009 Doc ID 15562 Rev 1 For further information contact your local STMicroelectronics sales office. 1/4 www.st.com 4 2/4 Doc ID 15562 Rev 1 TP Vup C6 0.47µF C4 0.47µF LX TTX EXTM SDA DSQIN ADDR DSQOUT SCL 13/18 (VCTRL) Vup P-GND 100µF C3 L1 22µH VoRX VoTX C8 0.22µF L3 220µH C9 10µF D3 1N4007 R3 10Kohm C12 10nF D2 R4 15Ohm BAT43 C11 0.22µF C10 0.22µF D4 BAT43 11K=0.75A Iout ISEL DETIN BY-PASS Vcc-L R1 100 R2 (RSEL) A-GND LNBH23 Vcc C7 0.1µF +12V Driver & Logic TVS Output (VoRx) Figure 1. D1 STPS2L30A C1 100µF C2 0.1µF 1 C5 100µF L2 Ferrite Bead +12V Power Circuit schematic STEVAL-CBL005V1 Circuit schematic Schematic diagram STEVAL-CBL005V1 2 Revision history Revision history Table 1. Document revision history Date Revision 06-Apr-2009 1 Changes Initial release. Doc ID 15562 Rev 1 3/4 STEVAL-CBL005V1 Please Read Carefully: 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. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. 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The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. © 2009 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 4/4 Doc ID 15562 Rev 1