TPS54719EVM-152

User's Guide SLVU732 – June 2012 TPS54719EVM-152, 7-A, SWIFT™ Regulator Evaluation Module The TPS54719EVM-152 evaluation module allows designers to evaluate the TPS54719 dc/dc converter. This user's guide contains a description of the test setup and results and provides the schematic, board art, and bill of materials of the EVM. 1 2 3 4 Contents Introduction .................................................................................................................. 2 Test Setup and Results .................................................................................................... 4 Board Layout ............................................................................................................... 11 Schematic and Bill of Materials .......................................................................................... 13 List of Figures 1 TPS54719EVM-152 Efficiency ............................................................................................ 5 2 TPS54719EVM-152 Low Current Efficiency............................................................................. 5 3 TPS54719EVM-152 Load Regulation .................................................................................... 6 4 TPS54719EVM-152 Line Regulation ..................................................................................... 6 5 TPS54719EVM-152 Transient Response 6 TPS54719EVM-152 Loop Response 7 8 9 10 11 12 13 14 15 16 17 18 ............................................................................... 7 .................................................................................... 7 TPS54719EVM-152 Output Ripple ...................................................................................... 8 TPS54719EVM-152 Input Ripple ........................................................................................ 8 TPS54719EVM-152 Start-Up Relative to VIN ........................................................................... 9 TPS54719EVM-152 Start-Up Relative to Enable ...................................................................... 9 TPS54719EVM-152 Shutdown Relative to VIN ........................................................................ 10 TPS54719EVM-152 Shutdown Relative to EN ........................................................................ 10 TPS54719EVM-152 Top-Side Assembly ............................................................................... 11 TPS54719EVM-152 Top-Side Layout .................................................................................. 12 TPS54719EVM-152 Internal Layer 1 Layout .......................................................................... 12 TPS54719EVM-152 Internal Layer 2 Layout .......................................................................... 13 TPS54719EVM-152 Bottom-Side Layout .............................................................................. 13 TPS54719EVM-152 Schematic.......................................................................................... 14 List of Tables 1 Input Voltage and Output Current Summary ............................................................................ 2 2 TPS54719EVM-152 Performance Specification Summary ............................................................ 2 3 Output Voltages Available ................................................................................................. 3 4 EVM Connectors and Test Points ........................................................................................ 4 5 TPS54719EVM-152 Bill of Materials .................................................................................... 15 6 Label Marking .............................................................................................................. 15 SWIFT is a trademark of Texas Instruments. SLVU732 – June 2012 Submit Documentation Feedback TPS54719EVM-152, 7-A, SWIFT™ Regulator Evaluation Module Copyright © 2012, Texas Instruments Incorporated 1 Introduction 1 www.ti.com Introduction This user's guide contains background information for the TPS54719 as well as support documentation for the TPS54719EVM-152 evaluation module (also called PWR152). Also included are the performance specifications, the schematic, and the bill of materials for the TPS54719EVM-152. 1.1 Background The TPS54719 dc/dc converter is designed to provide up to a 7-A output from an input voltage source of 2.95 V to 6 V. Rated input voltage and output current range for the evaluation module are given in Table 1. This evaluation module is designed to demonstrate the small, printed-circuit-board areas that can be achieved when designing with the TPS54719 regulator. The switching frequency is externally set at a nominal 500 kHz. The high-side and low-side MOSFETs are incorporated inside the TPS54719 package along with the gate drive circuitry. The low, drain-to-source on-resistance of the MOSFETs allows the TPS54719 to achieve high efficiencies and helps keep the junction temperature low at high output currents. The compensation components are external to the integrated circuit (IC), and an external divider allows for an adjustable output voltage. Additionally, the TPS54719 provides adjustable slow start and undervoltage lockout inputs. The absolute maximum input voltage is 7 V for the TPS54719EVM-152. Table 1. Input Voltage and Output Current Summary 1.2 EVM INPUT VOLTAGE RANGE OUTPUT CURRENT RANGE TPS54719EVM-152 VIN = 3 V to 6 V 0 A to 7 A Performance Specification Summary A summary of the TPS54719EVM-152 performance specifications is provided in Table 2. Specifications are given for an input voltage of VIN = 5 V and an output voltage of 1.8 V, unless otherwise specified. The TPS54719EVM-152 is designed and tested for VIN = 3 V to 6 V. The ambient temperature is 25°C for all measurements, unless otherwise noted. Table 2. TPS54719EVM-152 Performance Specification Summary SPECIFICATION TEST CONDITIONS VIN operating voltage range MIN TYP MAX 3 5 6 V VIN start voltage 2.79 V VIN stop voltage 2.59 V Output voltage set point 1.8 Output current range VIN = 3 V to 6 V Line regulation IO = 3 A, VIN = 3 V to 6 V ±0.04% Load regulation VIN = 5 V, IO = 0 A to 7 A 0 ±0.4% V 7 A IO = 1.75 A to 5.25 A, slew rate = 30 mA/µs Voltage change –108 Recovery time 175 μs IO = 5.25 A to 1.75 A, slew rate = 30 mA/µs Voltage change 108 mV Recovery time 175 μs 45 kHz Load transient response mV Loop bandwidth VIN = 5 V, IO = 3.5 A Phase margin VIN = 5 V , IO = 3.5 A 62 ° Input ripple voltage IO = 7 A 250 mVPP Output ripple voltage IO = 7 A