STMicroelectronics STEVAL-CBL012V1

Overview

STEVAL-CBL012V1 from STMicroelectronics is an evaluation board implementing the LNBH26 dual LNB supply and control IC, designed for satellite TV reception systems. It provides DiSEqC 2.0-compliant power delivery (12 V input), integrated 22 kHz tone generation, I²C-controlled voltage programming (15 levels), and dynamic short-circuit protection for dual-LNB antenna setups.

For engineers reviewing the STEVAL-CBL012V1 datasheet, STEVAL-CBL012V1 pinout, STEVAL-CBL012V1 application, or STEVAL-CBL012V1 equivalent, key selection criteria include DiSEqC 2.0 compliance, dual-LNB current capability (up to 0.5 A per channel), 93% DC-DC efficiency, programmable output voltage, and built-in LPM mode for thermal management in compact satellite receiver designs.

Technical Context

The board implements the LNBH26 IC's high-efficiency step-up PWM converter with integrated N-MOSFET, enabling operation from 8–16 V input while delivering regulated LNB supply voltages. Its factory-trimmed 22 kHz tone generator maintains waveform integrity under no-load and loaded conditions, meeting ETSI EN 301 458 requirements.

I²C interface enables full digital control of output voltage level, current limit (via external resistor), and diagnostic status (overload, overtemperature, short-circuit). The DSQIN TTL-compatible pin allows direct DiSEqC™ data encoding without external logic.

Key Specifications

Availability

STEVAL-CBL012V1 is available at Aetrix Electronics and suitable for satellite receiver development, DiSEqC 2.0 system validation, and dual-LNB power architecture prototyping requiring stable component supply and traceable evaluation hardware.

Supply support for STEVAL-CBL012V1 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, consumer, and automotive markets.

The STEVAL-CBL012V1 belongs to ST's satellite interface evaluation platform family, developed specifically to accelerate DiSEqC-compliant LNB power system design for set-top box and integrated receiver-decoder (IRD) manufacturers.

FAQ

What is the primary function of the STEVAL-CBL012V1 evaluation board?

The STEVAL-CBL012V1 implements the LNBH26 IC to provide dual-LNB power supply and DiSEqC 2.0 control in satellite TV reception systems. It delivers regulated bias voltage (13/18 V), generates a precise 22 kHz tone, and supports I²C-based configuration and diagnostics - all on a single PCB for rapid system integration and validation.

Does the board support both single and dual LNB configurations?

Yes - the underlying LNBH26 IC is designed for dual-LNB operation with independent current limiting and shared 22 kHz tone injection. The STEVAL-CBL012V1 board routes both outputs with separate test points and protection circuitry, enabling simultaneous powering and switching of two LNBs in monoblock or twin-feed antenna systems.

Can the 22 kHz tone be disabled or bypassed?

No - the 22 kHz tone generator is integral to the LNBH26 and cannot be disabled; however, its output is gated by the DSQIN pin. When DSQIN is held low, tone injection is suppressed while maintaining DC bias. This allows DiSEqC command timing control without modifying internal oscillator operation.

Is external firmware or host controller required to operate the board?

Basic operation requires only a 12 V supply and TTL-level DiSEqC data on DSQIN. Full functionality - including voltage level selection, current limit adjustment, and fault readback - requires an I²C master (e.g., MCU or PC-based adapter) to communicate with the LNBH26's register map as defined in the device datasheet.