Figure 2-1 Board Space Savings

Current discrete high voltage resistors can consume a significant portion of space on PCB. Typically, voltage drops across a single resistor are limited by manufacturers and customers prefer using smaller footprint resistors due to board-level reliability concerns. Given this, a system can need as many as 15 HV resistors to step down the voltage and maintain the system's isolation ratings. By contrast, the AMC038x product family integrates HV resistors into the device which equates to a simpler, smaller design. This offers 8mm creepage and clearance distance between the HV input and the next closest pin. As demonstrated in Figure 2-1, this is a design size reduction of over 50% and decreases the BOM count significantly.