Cool-Power ZVS Switching Regulators PI3740-00 8V 60V , 10V 50V , 50 140W Cool-Power ZVS Buck-Boost Regulator IN OUT Product Description Features & Benefits Up to 96% efficiency The PI3740-00 is a high efficiency, wide input and output range DC-DC ZVS Buck-Boost Regulator. This high density System-in- 50 140W continuous output power Package (SiP) integrates controller, power switches, and support components. The integration of a high performance Zero-Voltage Parallel capable with single wire current sharing Switching (ZVS) topology within the PI3740-00 increases point of External frequency synchronization / interleaving load performance, providing best in class power efficiency. High Side Current Sense Amplifier The PI3740-00 requires an external inductor, resistive divider and minimal capacitors to form a complete DCDC switching mode General Purpose Amplifier buck-boost regulator. Lighting / Constant Current Mode (LGH) Input Over / Undervoltage Lockout (OVLO / UVLO) Output Voltage Device Set Range Output Overvoltage Protection (OVP) 12V 10 to 50V PI3740-00-LGIZ Overtemperature Protection (OTP) Fast and slow current limits The ZVS architecture also enables high frequency operation while minimizing switching losses and maximizing efficiency. The high -40C to 115C operating range (T ) J switching frequency operation reduces the size of the external Excellent light load efficiency lfi tering components, improves power density, and enables fast dynamic response to line and load transients. Applications Battery Charging and Conditioning, Telecom, Networking, Lighting Computing, Communications, Industrial, Automotive Accessories 12V, 24V, 48V and 60V DCDC Applications Package Information 10mm x 14mm x 2.56mm LGA SiP Typical Application VS1 VS2 VIN VOUT C C IN OUT R1 PGND PGND R2 ISP ISN IMON VDR PI3740-00 VSN 10k VSP PGD VDIFF EN LGH SYNCO EAIN SYNCI EAO C HF TRK COMP SGND C C COMP TRK Cool-Power ZVS Switching Regulators Rev 1.1 vicorpower.com Page 1 of 48 02/2017 800 927.9474PI3740-00 Contents Order Information 3 Application Description 22 Absolute Maximum Ratings 3 Output Voltage Trim 22 Pin Description 4 Soft-Start Adjustment and Tracking 22 Package Pin-Out 5 Inductor Pairing 22 Storage and Handling Information 6 Filter Considerations 23 Block Diagram 6 Thermal Design 26 PI3740-00-LGIZ Electrical Characteristics 7 Thermal Design Inductor 28 PI3740-00-LGIZ Performance Characteristics 11 PI3740-00-LGIZ Percentage of SiP Loss to Total Loss 30 MTBF 19 Evaluation Board Thermal De-rating 32 Functional Description 20 Parallel Operation 34 Enable 20Synchronization 34 Switching Frequency Synchronization 20Interleaving 34 Soft-Start and Tracking 20 Small Signal Models CV-CC Modes 35 Remote Sensing Differential Amplifier 20 Small Signal Model Constant Voltage Mode 35 Power Good 20 Error Amplifier 35 Output Current Limit Protection 20 Lighting Mode (LGH) 35 Input Undervoltage Lockout 20 LGH Amplifier Small Signal Model 36 Input Overvoltage Lockout 20 VDR Bias Regulator 36 Output Overvoltage Protection 21 PI3740-00-LGIZ Modulator Gain / Output Resistance 37 Overtemperature Protection 21 System Design Considerations 44 Pulse Skip Mode (PSM) 21 Package Drawings 45 Variable Frequency Operation 21 Receiving PCB Pattern Design Recommendations 46 IMON Amplifier 21 Revision History 47 Product Warranty 48 Cool-Power ZVS Switching Regulators Rev 1.1 vicorpower.com Page 2 of 48 02/2017 800 927.9474