This reference design uses only 2 ICs in a stacked configuration to provide 2.7 V at 60 A in a compact form factor. Both an all ceramics output capacitors version and a low ESR polymer output capacitors version were demonstrated to meet requirement of less than 3% undershoot for a step load from 2 A to 60 A in less than 1 microsecond. Internal compensation simplifies the design process. Design includes on-board high speed dynamic load tester: output ripple probe interface and test points for a stability analyzer.