Renesas Releases High-commutation Triac BCR8LM-14LK

Renesas Electronics Co., Ltd. (hereinafter referred to as "Renesas Electronics") releases a high-commutation triac BCR8LM-14LK that supports a rated on-state current RMS (IT(RMS)) of 8 amps (A ) and rated off-state repeated peak voltage (VDRM) 700V, can be directly triggered by the microcontroller (MCU). This new triac can be used to drive loads such as AC motors, solenoid valves, and heaters for home appliances (white goods) such as washing machines and refrigerators.

Renesas Electronics Triac BCR8LM-14LK

Triacs are used to control power switches in AC circuits. Due to the high gate trigger current (IGT), a dedicated circuit is required to amplify the output current of a conventional MCU. Reducing the gate trigger current is usually at the expense of other performance. The BCR8LM-14LK maintains the performance of existing TRIAC products while achieving low 12-mA (mA) or lower gate-trigger current, allowing it to be directly driven by the MCU. This eliminates the need for previously required amplifier circuits, making it possible to design more compact, lower-cost drive circuits with fewer components and lower power consumption.

In the field of home appliances (white goods), the demand for smaller, more power-efficient drive circuits for AC motors, solenoid valves, and heaters has gradually increased in recent years due to design considerations and energy efficiency considerations. . This has led to the need for a triac device that can be directly driven by an MCU without a dedicated driver circuit. However, the gate trigger current of a triac is usually 30 mA or more. Lowering the gate-trigger current to about 12 mA to accommodate the low current output of a typical microcontroller will cause commutation characteristics and worsening of the off-state critical voltage rise rate (dv/dt), while the off-state critical voltage rise rate prevents failure Very important. The BCR8LM-14LK uses a basic structure designed to reduce the gate-trigger current and uses a special device structure and process optimization design to achieve a gate trigger current of only 12 mA or less without affecting other important TRIAC characteristics. .

The BCR8LM-14LK device is the industry's first triac device with a voltage tolerance of 700 volts, maintaining ((dv/dt)c) a high commutation of 10 V/μs while achieving 12 mA. Or lower gate trigger current. Unlike traditional triac devices, the BCR8LM-14LK does not require a dedicated driver circuit. As a result, systems such as AC motors can use simpler drive circuits to help reduce component costs and power consumption.

In addition to the BCR8LM-14LK device with an on-state current rating of 8 amps, Renesas Electronics plans to introduce new products of 12 amps, 16 amps and 20 amps to further expand the product lineup of the series. In addition to the TO-220FL (UL certified) insulation package, Renesas will also provide a range of non-insulated packages to meet a wide range of customer needs.

Samples of the Renesas BCR8LM-14LK triac will be available in January 2012 at a price of $1.0. Renesas plans to start mass production in March 2012, and it is expected that the total output in March 2013 will reach 3 million pieces.