STMicroelectronics STEVAL-CBL009V1

Overview

STEVAL-CBL009V1 from STMicroelectronics is a DiSEqC 1.x-compliant demonstration board implementing the LNBH25 IC for satellite LNB power supply and control. It delivers regulated 13/18 V output, 22 kHz tone generation, I²C interface, integrated step-up DC-DC converter (93% efficiency @ 0.5 A), and dynamic short-circuit protection - deployed in satellite TV reception systems with dish antennas.

For engineers reviewing the STEVAL-CBL009V1 datasheet, STEVAL-CBL009V1 pinout, STEVAL-CBL009V1 application, or STEVAL-CBL009V1 equivalent, key selection criteria include DiSEqC 1.x compliance, single 12 V input operation, LNB current limit configurability, no-load 22 kHz waveform integrity, and integrated thermal/overload diagnostics via I²C.

Technical Context

The board implements ST's LNBH25 IC in a complete reference design for low-cost, high-efficiency LNB powering. It accepts 8–16 V DC input, generates stable 13/18 V outputs with ±5% regulation, and embeds a fully integrated N-MOSFET step-up PWM controller plus low-drop post-regulator.

DiSEqC 1.x communication is handled via I²C bus with dedicated tone generation circuitry ensuring 22 kHz waveform fidelity even under no-load conditions. Internal protections include overtemperature shutdown, overload detection with I²C status bits, and dynamic short-circuit response without latch-off.

Key Specifications

Availability

STEVAL-CBL009V1 is available at Aetrix Electronics and suitable for satellite TV receiver design, LNB power subsystem validation, and DiSEqC protocol interoperability testing requiring stable component supply and documented reference implementation.

Supply support for STEVAL-CBL009V1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, analog ICs, power management devices, and sensor solutions for industrial, automotive, and consumer applications.

The STEVAL-CBL009V1 belongs to ST's satellite interface evaluation board family, engineered to accelerate development of DiSEqC-compliant LNB power systems with minimal external components and full I²C controllability.

FAQ

What is the primary function of the STEVAL-CBL009V1?

The STEVAL-CBL009V1 is a demonstration board that implements ST's LNBH25 IC to provide regulated 13/18 V power, 22 kHz tone generation, and DiSEqC 1.x command interface for satellite LNB modules. It serves as a validated reference design-not a standalone IC-for rapid integration into satellite receiver hardware.

Does STEVAL-CBL009V1 support both vertical and horizontal LNB polarization?

Yes. The board supports dual-output voltage selection (13 V for vertical, 18 V for horizontal polarization) via I²C command or hardwired configuration, enabling full compatibility with standard DiSEqC 1.x LNB switching protocols used in satellite TV reception.

Can the output current limit be adjusted on this board?

Yes. The LNBH25 IC on the board features an external resistor–based current limit setting, allowing designers to configure maximum output current between approximately 350 mA and 600 mA - critical for matching specific LNB load requirements without component changes.

Is the 22 kHz tone generated by STEVAL-CBL009V1 compliant with DiSEqC 1.x timing specifications?

Yes. The board guarantees 22 kHz tone waveform integrity-including correct duty cycle, rise/fall times, and amplitude stability-even under no-load conditions, satisfying DiSEqC 1.x physical layer requirements for reliable command transmission to LNBs.