ST CBL004V1 User Manual
Power supply demonstration board for LNB
Features
■ Complete interface between LNBs and I
■ Built-in DC-DC converter for single 12 V supply
operation (8 - 15 volt V
range) and high
in
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 I
■ Output voltage and output current level
diagnostic feedback through I
■ LNB short-circuit dynamic protection
■ +/- 4 kV ESD tolerant on output power pins
■ RoHS compliant
2
C diagnostic bits
2
C bits
2
C bus
STEVAL-CBL004V1
based on the LNBH24
Data brief
STEVAL-CBL004V1
with a single input voltage supply in the range of
8 V to 15 V.
Description
The STEVAL-CBL004V1 demonstration board
implements a DC-DC converter based on the
LNBH24 dual LNB supply and control IC with
step-up and I
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 I
fully integrated step-up DC-DC converter, it works
April 2010 Doc ID 15239 Rev 1 1/4
For further information contact your local STMicroelectronics sales office.
2
C interface.
2
C bus interface and, thanks to the
www.st.com
4
Schematic diagram STEVAL-CBL004V1
1 Schematic diagram
Figure 1. STEVAL-CBL004V1 circuit schematic
2/4 Doc ID 15239 Rev 1
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