SNVAA84 October   2023 LMR36506

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Topology Selection
    2. 1.2 From Buck to Fly-Buck-Boost Converter
  5. 2Specific Implementation of the Fly-Buck-Boost Converter
    1. 2.1 Schematic
    2. 2.2 Bill of Materials
  6. 3Test Results
    1. 3.1 Start-up Behavior
    2. 3.2 System Loop Stability
    3. 3.3 Thermal Behavior
    4. 3.4 VOUT Ripple and SW Node Waveforms
    5. 3.5 Efficiency Data
      1. 3.5.1 Efficiency Data for Balanced Loads
      2. 3.5.2 Efficiency Data for Unbalanced Loads
    6. 3.6 Load Regulation
      1. 3.6.1 Load Regulation for Balanced Loads
      2. 3.6.2 Load Regulation for Unbalanced Loads
  7. 4Summary
  8. 5References

2.2 Bill of Materials

The Table 2-1 highlights the parts used to design the schematic in Section 2.1.

Table 2-1 Bill of Materials
Item # Designator Quantity Part Number Manufacturer Description Package Reference
1 !PCB 1 BSR086 Any Printed Circuit Board
2 C1, C9 2 CGA5L3X7S2A225K160AB TDK CAP, CERM, 2.2 uF, 100 V, +/- 10%, X7S, AEC-Q200 Grade 1, 1206 1206
3 C2 1 GRM188R72A104KA35D MuRata CAP, CERM, 0.1 uF, 100 V, +/- 10%, X7R, 0603 603
4 C3 1 GCM155R71C104KA55D MuRata CAP, CERM, 0.1 uF, 16 V, +/- 10%, X7R, 0402 402
5 C4 1 8.85012E+11 Wuerth Elektronik CAP, CERM, 1 uF, 16 V, +/- 10%, X7R, 0603 603
6 C5, C8, C15, C16 4 CGA5L1X7R1V106K160AC TDK CAP, CERM, 10 uF, 35 V, +/- 10%, X7R, AEC-Q200 Grade 1, 1206_190 1206_190
7 C6 1 C3216X7R2A105K160AA TDK CAP, CERM, 1 uF, 100 V, +/- 10%, X7R, 1206 1206
8 C7 1 UCD1J680MNL1GS Nichicon CAP, AL, 68 uF, 63 V, +/- 20%, SMD D10xL10mm
9 D1 1 MBR0580-TP Micro Commercial Components Diode, Schottky, 80 V, 0.5 A, SOD-123 SOD-123
10 D2 1 MMSZ4703T1G ON Semiconductor Diode, Zener, 16 V, 500 mW, SOD-123 SOD-123
11 D5 1 RBS1LAM40ATR Rohm DIODE SCHOTTKY 20 V 1 A PMDTM SOD128
12 L1 1 LPD6235-223MRB Coilcraft inductor, 22 uH, 1.73 A, 0.3 ohm, SMD 6x6mm
13 LBL1 1 THT-14-423-10 Brady Thermal Transfer Printable Labels, 0.650" W x 0.200" H - 10,000 per roll PCB Label 0.650 x 0.200 inch
14 Q1 1 BC856B-7-F Diodes Inc. Transistor, PNP, 65 V, 0.1 A, SOT-23 SOT-23
15 R1 1 CRCW04021M10FKED Vishay-Dale RES, 1.10 M, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 402
16 R2, R4 2 CRCW0402226KFKED Vishay-Dale RES, 226 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 402
17 R3 1 CRCW04027K15FKED Vishay-Dale RES, 7.15 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 402
18 R7 1 CRCW0402100KFKED Vishay-Dale RES, 100 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 402
19 R8 1 CRCW06034R99FKEA Vishay-Dale RES, 4.99, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 603
20 R9 1 CRCW040225K5FKED Vishay-Dale RES, 25.5 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 402
21 R10 1 CRCW040249R9FKED Vishay-Dale RES, 49.9, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 402
22 TP1, TP6, TP7 3 1502-2 Keystone Terminal, Turret, TH, Double Keystone1502-2
23 U1 1 LMR36506RFRPER Texas Instruments LMR36503/06-Q1 Wide Input 60-V Synchronous, DC-DC Buck Converter, RPE0009A (VQFN-9) RPE0009A
24 C10 0 CGA2B2C0G1H100D050BA TDK CAP, CERM, 10 pF, 50 V, +/- 5%, C0G/NP0, AEC-Q200 Grade 1, 0402 402
25 FID1, FID2, FID3, FID4, FID5, FID6 0 N/A N/A Fiduciary mark. There is nothing to buy or mount. N/A