ZVS Regulators PI354x-00 36 60V ZVS Buck Regulator & LED Driver IN Product Description Features & Benefits The PI354x-00 is a family of high input voltage, wide input High-Efficiency HV ZVS Buck Topology range DC-DC ZVS Buck regulators integrating controller, power Wide input voltage range of 36 60V switches, and support components all within a high-density System-in-Package (SiP). The PI354x-00 products are designed Tolerant of transient events up to 70V IN to operate within an SELV compliant system with steady state Constant voltage or constant current operation operation limited to 60V. The PI354x-00 products allow for transient voltage conditions up to 70V before shut down is Constant current error amplifier and reference triggered. The integration of a high-performance Zero-Voltage Switching (ZVS) topology, within the PI354x-00 series, increases Power-up into pre-biased load point of load performance providing best in class power efficiency. Parallel capable up to 3 regulators The PI354x-00 requires only an external inductor, two voltage selection resistors and minimal capacitors to form a complete Two-phase interleaving DC-DC switching mode buck regulator. Input Over/Undervoltage Lockout (OVLO/UVLO) Output Overvoltage Protection (OVP) Output Voltage Device I Max OUT Overtemperature Protection (OTP) Set Range Fast and slow current limits PI3542-00-LGIZ 2.5V 2.2 3.0V 10A Differential amplifier for output remote sensing 3.3V 2.6 3.6V 10A PI3543-00-LGIZ User adjustable soft-start & tracking PI3545-00-LGIZ 5.0V 4.0 5.5V 10A 40 to 125C operating range (T ) J PI3546-00-LGIZ 12V 6.5 14V 9A PI354x-00 Family can operate in constant voltage output for typical Applications buck regulation applications in addition to constant current output HV to PoL Buck Regulator Applications for LED lighting and battery charging applications. Computing, Communications, Industrial, Automotive Accessories Constant Current Output Operation: LED Lighting Battery Charging Package Information 10 x 10 x 2.6mm LGA SiP Note: Product images may not highlight current product markings. ZVS Regulators Rev 2.4 Page 1 of 39 10/2021PI354x-00 Contents Order Information 3 Application Description 26 Thermal, Storage and Handling Information 3 Parallel Operation 26 Absolute Maximum Ratings 3Synchronization 26 Functional Block Diagram 4 Interleaving 26 Pin Description 5 Output Voltage Set Point 27 Package Pinout 6 Soft-Start Adjust and Tracking 27 Large Pin Blocks 6 Inductor Pairing 27 PI354x-00 Common Electrical Characteristics 7 Thermal De-Rating 28 PI3542-00 (2.5V ) Electrical Characteristics 9 Small Signal Model Constant Voltage Mode 28 OUT PI3543-00 (3.3V ) Electrical Characteristics 13 Error Amplifier 28 OUT PI3545-00 (5.0V ) Electrical Characteristics 17 Lighting Mode (LGH) 29 OUT PI3546-00 (12.0V ) Electrical Characteristics 21 LGH Amplifier Small Signal Model 30 OUT Functional Description 25 Filter Considerations 32 ENABLE (EN) 25 VDR Bias Regulator 33 Remote Sensing 25 System Design Considerations 33 Switching Frequency Synchronization 25 Layout Guidelines 34 Output Voltage Selection 25 Recommended PCB Footprint and Stencil 36 Output Current Limit Protection 25 LGA Package Drawings 37 Input Undervoltage Lockout 25 Revision History 38 Input Overvoltage Lockout 26Warranty 39 Output Overvoltage Protection 26 Overtemperature Protection 26 Pulse Skip Mode (PSM) 26 Variable Frequency Operation 26 ZVS Regulators Rev 2.4 Page 2 of 39 10/2021