ZVS Regulators PI352x-00 30 60V ZVS Buck Regulator IN Product Description Features & Benefits The PI352x-00 is a family of high input voltage, wide-input-range HighEfficiency HV ZVS Buck Topology DC-DC ZVS Buck regulators integrating controller, power Wide input voltage range of 30 60V switches and support components all within a high-density System-in-Package (SiP). Powerup into prebiased load 6.0V The integration of a high-performance Zero-Voltage Switching Parallelcapable with singlewire current sharing (ZVS) topology, within the PI352x-00 series, increases Input Over/Undervoltage Lockout (OVLO/UVLO) point-of-load performance providing best-in-class power efficiency. The PI352x-00 requires only an external inductor, Output Overvoltage Protection (OVP) two voltage selection resistors and minimal capacitors to form a Overtemperature Protection (OTP) complete DC-DC switch-mode buck regulator. Fast and slow current limits Output Voltage Differential amplifier for output remote sensing Device I Max OUT Set Range User adjustable soft start & tracking 3.3V 2.2 4V 22A PI3523-00 40 to 120C operating range (T ) INT PI3525-00 5.0V 4.0 6.5V 20A Applications PI3526-00 12V 6.5 14V 18A HV to PoL Buck Regulator Applications Computing, Communications, Industrial, Automotive Equipment Package Information 10 x 14 x 2.56mm LGA SiP ZVS Regulators Rev 2.1 Page 1 of 41 10/2021PI352x-00 Contents Thermal, Storage and Handling Information 3 SiP Power Dissipation as Percentage of Total System Losses 33 Absolute Maximum Ratings 3 Application Description 34 Functional Block Diagram 4 Output Voltage Set Point 34 Pin Description 5 Soft Start Adjust and Tracking 34 Package Pinout 6 Inductor Pairing 35 PI352x-00 Common Electrical Characteristics 7 Parallel Operation 35 PI3523-00 (3.3V ) Electrical Characteristics 8 Filter Considerations 35 OUT PI3525-00 (5.0V ) Electrical Characteristics 15 VDR Bias Regulator 36 OUT PI3526-00 (12V ) Electrical Characteristics 22 Layout Guidelines 37 OUT Functional Description 29 LGA Recommended PCB Footprint and Stencil 38 ENABLE (EN) 29 LGA Package Drawings 39 Remote Sensing 29 Revision History 40 Soft Start 29Warranty 41 Output Voltage Selection 29 Output Current Limit Protection 29 Input Undervoltage Lockout 29 Input Overvoltage Lockout 30 Output Overvoltage Protection 30 Overtemperature Protection 30 Pulse Skip Mode (PSM) 30 Variable Frequency Operation 30 Thermal Characteristics 30 ZVS Regulators Rev 2.1 Page 2 of 41 10/2021