Datasheet
Table Of Contents
- FEATURES
- APPLICATIONS
- CONTENTS
- DESCRIPTION
- DEVICE RATINGS
- ABSOLUTE MAXIMUM RATINGS
- RECOMMENDED OPERATING CONDITIONS
- ELECTROSTATIC DISCHARGE (ESD) PROTECTION
- PACKAGE DISSIPATION RATINGS
- ELECTRICAL CHARACTERISTICS
- TYPICAL CHARACTERISTICS
- DEVICE INFORMATION
- BLOCK DIAGRAM
- APPLICATION INFORMATION
- FUNCTIONAL DESCRIPTION
- Voltage Reference
- Oscillator
- Input Undervoltage Lockout (UVLO) and Startup
- Enable and Timed Turn On of the Outputs
- Output Voltage Sequencing
- Soft Start
- Output Voltage Regulation
- Feedback Loop and Inductor-Capacitor (L-C) Filter Selection
- Inductor-Capacitor (L-C) Selection
- Maximum Output Capacitance
- Minimum Output Capacitance
- Modifying The Feedback Loop
- Example: TPS54386 Buck Converter Operating at 12-V Input, 3.3-V Output and 400-mA(P-P) Ripple Current
- Bootstrap for the N-Channel MOSFET
- Light Load Operation
- SW Node Ringing
- Output Overload Protection
- Operating Near Maximum Duty Cycle
- Dual Supply Operation
- Cascading Supply Operation
- Multiphase Operation
- Bypass and FIltering
- Over-Temperature Protection and Junction Temperature Rise
- Power Derating
- PowerPAD Package
- PCB Layout Guidelines
- FUNCTIONAL DESCRIPTION
- DESIGN EXAMPLES
- ADDITIONAL REFERENCES

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TPS54383 , , TPS54386
SLUS774B – AUGUST 2007 – REVISED OCTOBER 2007
Table 3. Design Example List of Materials
REFERENCE
QTY VALUE DESCRIPTION SIZE PART NUMBER MANUFACTURER
DESIGNATOR
1 C1 100 µ F Capacitor, Aluminum, 25V, 20% E-can EEEFC1E101P Panasonic
2 C10, C11 10 µ F Capacitor, Ceramic, 25V, X5R 20% 1210 C3216X5R1E106M TDK
1 C12 4.7 µ F Capacitor, Ceramic, 10V, X5R 20% 0805 Std Std
2 C14, C16 470 pF Capacitor, Ceramic, 25V, X7R, 20% 0603 Std Std
1 C15 6.8 nF Capacitor, Ceramic, 25V, X7R, 20% 0603 Std Std
Capacitor, Aluminum, 10V, 20%, FC
1 C17, C5 100 µ F F-can EEEFC1A101P Panasonic
Series
4 C3, C4, C18, C19 10 µ F Capacitor, Ceramic, 6.3V, X5R 20% 0805 C2012X5R0J106M TDK
1 C8 10 nF Capacitor, Ceramic, 25V, X7R, 20% 0603 Std Std
2 C9, C13 0.033 µ F Capacitor, Ceramic, 25V, X7R, 20% 0603 Std Std
2 D1, D2 MBRS320 Diode, Schottky, 3-A, 30-V SMC MBRS330T3 On Semi
0.484 x
2 L1, L2 22 µ H Inductor, Power, 6.8A, 0.038 Ω MSS1278-153ML Coilcraft
0.484
2 R2, R9 20 k Ω Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R5 422 Ω Resistor, Chip, 1/16W, 1% 0603 Std Std
2 R6, R10 10 Ω Resistor, Chip, 1/16W, 5% 0603 Std Std
1 R8 698 Ω Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R4 3.83 k Ω Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R7 6.34 k Ω Resistor, Chip, 1/16W, 1% 0603 Std Std
TPS54383 DC-DC Switching Converter HTSSOP
1 U1 TPS54383PWP TI
w/ FET -14
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