Avago launches 2.5A maximum output optical isolation IGBT gate drive ACPL-

Avago Technologies announced today to launch 2.5A maximum output driving ACPL-H342 and ACPL-K342 optical isolation IGBT gate driver, which has embedded Miller clamp, rail to rail output voltage, undervoltage latch (UVLO) circuit and protection From the IGBT cross-guiding and current "straight" to ensure safe and effective power inverter and motor control applications. The designer began to focus on the overall cost of power inverters and motor drive systems. This includes potential maintenance and on-site maintenance costs. System designers now require isolation gate drivers with integrated functions, such as active Moles clamps and rails for reliable IGBT and power MOSFET operations and protected, which are clicked on drive and renewable energy inverters. It is especially important, and there is no stop, and the field maintenance is also very expensive. IGBT protection and efficiency Miller clamp can control Miller current in high DV / DT output transitions. It also avoids the use of negative power supplies to ensure that the IGBT is securely turned off by quickly released the larger gate capacitance of the IGBT to the lower level and does not affect the IGBT shutdown. In addition, the latest gate-driven optocoupler of AVAGO is the best, common mode transient suppression of 40 kV / μs in the industry in the 1.5kV common mode voltage to perform reliable operation in the noise environment. The UVLO feature can make a clamp output at any sufficient voltage with a safe operation. The undervoltage latch protection circuit ensures that there is enough gate drive voltage to completely turn on the IGBT, so it can minimize IGBT power consumption. Once the voltage exceeds the forward UVLO threshold, the UVLO clamp will be released and the device output is turned on to respond to the input signal. Efficiency is an important design objective for the latest ACPL-H342 and ACPL-K342 gate drivers. Their rails to the rail output power source swing and the minimum output dead time can minimize the drive to reduce the drive and improve efficiency through a shorter propagation time. The propagation latency is specifically used to protect the IGBT transcond between the high side and the low-side semi-bridge IGBT configuration, which is generally applied in the power inverter. The propagation delay in the two devices (TPHL - TPLH) is the minimum-10ns to the maximum-200ns. Therefore, it can be prevented from passing through, which eliminates the significant case that can cause IGBT damage or shorten the operating time. RoHS compliance, 8 lead extensions SO-8 packaging can be used, which is 40% more than traditional 8-pin DIP packages. All devices can operate in a wide temperature range between -40 to + 105OC. Technology area Heilind won the title of "2017 Huaqiang Electronic Network Quality Supplier" Tas5634300W stereo PurePath (TM) HD digital input efficient power level TAS2557 5.7W D-class audio amplifier with H-class boost and speaker detection function Ruckus NetWorks appointed Deng Weidong for the general manager of China China Site Electronic Technology Forum - Power Technology Practice Seminar held in Wuhan