28.6 An 87% Efficient 2V-Input, 200A Voltage Regulator Chiplet Enabling Vertical Power Delivery in Multi-kW Systems-on-Package. - Rinkle Jain; Shunjiang Xu; Rajiv Kaushal; Carlos Mariscal; Humberto Caballero; Tamir Salus; Christopher Schaef; Anup Deka; Aruna Payala; Keng Chen; Huong T. Do; Jonathan Douglas (ISSCC, 2024)