References | Texas Instruments HPA070 instruction

SLUU186 − March 2004

9References

1.Data Sheet, TPS40055 Wide-Input Synchronous Buck Controller (SLUS593).

2.Technical Brief, PowerPAD Thermally Enhanced Package (SLMA002).

16TPS40055-Based Design Converts 12-V Bus to 1.8 V at 15 A (HPA070)

Image 16

Contents

User’s Guide EVM Important Notice Dynamic Warnings and Restrictions Features Introduction Schematic TPS40055EVM−001 HPA070 Schematic Component Selection TPS40055 Device SelectionFrequency of Operation + R2 + f 17.82 10 *6 * 23 k Inductance Value Uvlo CircuitryInput capacitor selection Output Capacitor Selection Mosfet selection Snubber Component Selection Short Circuit ProtectionCompensation Components Test Setup DC Input SourceOutput Load Oscilloscope Probe Test Jacks Efficiency and Power Loss Power Dissipation LoadTest Results / Performance Data Closed Loop Performance Output Ripple and Transient Response EVM Assembly Drawing and PCB LayoutOutput Voltage Ripple Transient Response Top Side Copper Internal Layer 2 Copper List of Materials TPS40055EVM−001 HP A070 List of Materials References Important Notice Products Applications