The new 2.25-A PTH08000W and 3-A PTH04000W plug-in power modules support an adjustable output voltage range down to 0.9-V at a power conversion efficiency up to 94 percent. The flexible converters' unique Auto-Track sequencing feature allows the outputs of multiple modules to track one another or a common voltage during power-up and power-down transitions. The PTH08000W operates at input voltages from 4.5-V to 14-V, and can supply an output current of up to 2.25-A with output voltages of 5.5-V to 0.9-V, making it ideal for systems that use a 12-V intermediate distribution bus. The 3-A PTH04000W module supports input voltages from 3-V to 5.5-V, and can support output voltages from 0.9-V to 3.6-V. The 3-A module efficiently meets all power requirements for industrial, medical, and test and measurement systems that require a 3.3-V or 5-V distribution bus. Both modules include several power protection features, including an on/off inhibit and thermal shutdown, overcurrent protection and under-voltage.