Power integrated modules handle rugged industrial applications

Announced at APEC 2021, ON Semiconductor has introduced two integrated, converter-inverter-power factor correction (PFC) modules that are designed for industrial motor drives, servo drives, and HVAC where they are used to drive motors for applications including fans and pumps. The NXH50M65L4C2SG and NXH50M65L4C2ESG are transfer−molded power integrated modules (TMPIM) that target rugged industrial applications with high output power.

The NXH50M65L4C2SG and NXH50M65L4C2ESG power integrated modules, based on a standard aluminum oxide (AI2O3) substrate and an enhanced low thermal resistance substrate, respectively, contain a converter−inverter−PFC circuit consisting of single-phase converter with four 75 A, 1600 V rectifiers. The 3-phase inverter (NXH50M65L4C2ESG) uses six 50 A, 600 V IGBTs with inverse diodes and the dual−channel interleaved PFC (NXH50M65L4C2SG) integrates two 75 A, 650 V PFC IGBTs with inverse diodes and two 50 A, 650 V PFC diodes. An NTC thermistor is embedded to allow for monitoring of device temperature during operation.

Thanks to the pre-assembled and optimized module, parasitic elements are very small when compared with discrete PCB-based designs, said ON Semiconductor, allowing a wide PFC switching frequency range between 18 kHz and 65 kHz.

The NXH50M65L4C2SG and NXH50M65L4C2ESG are rated at 50 A, which permits use in applications up to 8 kW. Other devices are available with current ratings of 20 A and 30 A.

The devices are housed in transfer-molded DIP-26 packages, measuring 73 × 47 × 8 mm, which is a 20 percent area savings over current solutions, said the company, enabling higher power density. In addition, the sealed package includes an integrated heatsink (with 6 mm clearance to pins) and offers high levels of corrosion resistance. A silicon carbide (SiC) option is also available for further increased switching frequency and efficiency.

The NXH50M65L4C2SG and NXH50M65L4C2ESG operate with the FAN9672 PFC controller and gate driver solutions including devices in ON Semi’s new NCD5700x family. The NCD57252 dual-channel isolated IGBT/MOSFET gate driver offers 5 kV of galvanic isolation and can be configured for dual low-side, dual high-side or half-bridge operation. The NCD57252 is housed in a small SOIC-16 wide body package and accepts logic level inputs (3.3 V, 5 V & 15 V). The high current device (source 4.0 A / sink 6.0 A at Miller plateau voltage) is suitable for high-speed operation as typical propagation delays are 60 ns, said the company.

More information about ON Semiconductor’s industrial drive solutions can be found here. Along with the introduction of the new TMPIMs, ON Semiconductor will showcase SiC solutions for industrial applications at APEC 2021, June 14-17.