SLUU340A February   2009  – January 2022 TPS51123

 

  1. 1Introduction
    1.     Trademarks
  2. 2Performance Specification Summary
  3. 3Schematic
  4. 4Test Setup and Results
    1. 4.1 Test Setup
    2. 4.2 Test Procedure
    3. 4.3 Start-Up Performance
    4. 4.4 Transient Performance
  5. 5Configuration
    1. 5.1 Switching Frequency Selection
    2. 5.2 Operation Mode Selection
  6. 6Physical Layouts
  7. 7List of Materials
  8. 8References
  9. 9Revision History

7 List of Materials

Table 7-1 provides a list of materials for the TPS51123-EVM.

Table 7-1 TPS51123 List of Materials
RERERENCE
DESIGNATOR		QTYDESCRIPTIONSIZEMFRPART NUMBER
C13, C232Capacitor, Ceramic, 0.1 μF, 50 V, X5R, 10%0603muRataGRM188B31H104K
C10, C210Capacitor7.3 × 4.3 mmAnyAny
C11, C222Capacitor, POS, 330 μF, 6.3 V, 25 mΩ, 20%7.3 × 4.3 mmSANYO6TPE330ML
C12, C200Capacitor0805AnyAny
C151Capacitor, Ceramic, 10 μF, 6.3 V, X5R, 10%0805TDKC2012X5R0J106K
C171Capacitor, Ceramic, 33 μF, 6.3 V, X5R, 20%1206TDKC3216JB0J336M
C191Capacitor, Ceramic, 220 nF, 16 V, X5R, 10%0603muRataGRM188B31C224K
C260Capacitor0603AnyAny
C50Capacitor0805AnyAny
C6, C7, C24, C254Capacitor, Ceramic, 10 μF, 25 V, BJ, M1210Taiyo YudenTMK325BJ106MM
C1, C2, C3, C4, C8, C9, C14, C16, C180Capacitor0603AnyAny
CN1, CN22Adaptor, 3.5-mm probe clip ( or 131-5031-00)0.2Tektronix131-4244-00
D10DiodeSOT363AnyAny
D2, D50Diode, Schottky, 0.5 A, 30 VSOD-123AnyAny
D3, D42Diode, Schottky, 3 A, 20 VSMARohmRSX501LA-20 OR RSX510L-20
JP11Header, 2×4-pin, 100 mil spacing (36-pin strip)0.20 × 0.40 inchSullinsPTC36DAAN
JP21Header, 2×3-pin, 10 mil spacing (36-pin strip)0.20 × 0.30 inchSullinsPTC36DAAN
L1, L22Inductor, high-current, 3.3 μH, 14 A, 7.3 mΩ, SMT0.425 × 0.45 inchTokoFDA1055-3R3M
Q1, Q32MOSFET, N-channel, 30 V, 11 A, 9.1 mΩSO8IRIRF7821
Q2, Q42MOSFET, N-channe,l 30 V, 11 A, 12.5 mΩSO8FairchildFDS6690AS
R3, R10, R13, R154Resistor, Chip, 0 Ω, 1/16 W, 1%0603StdStd
R121Resistor, Chip, 620 kΩ, 1/16W, 1%AnyStdStd
R111Resistor, Chip, 13 kΩ, 1/16W, 1%0603AnyAny
R51Resistor, Chip, 30 kΩ, 1/16W, 1%0603StdStd
R21Resistor, Chip, 100 kΩ, 1/16W, 1%0603StdStd
R6, R82Resistor, Chip, 130 kΩ, 1/16W, 1%0603StdStd
R7, R92Resistor, Chip, 20 kΩ, 1/16W, 1%0603StdStd
R11Resistor, Chip, 10 kΩ, 1/16W, 1%0603StdStd
R4, R142Resistor, Chip, 5.1 Ω, 1/16W, 1%0603StdStd
S11Header, 2-pin, 100 mil spacing, (36-pin strip)0.20 in. × 0.20 in.SullinsPTC36SAAN
SW1, SW20Switch0.28 in. × 0.18 in.AnyAny
SW3, SW42Switch, ON-ON mini toggle0.28 in. × 0.18 in.NikkaiG-12AP
TP10Test Point0.125 in. × 0.125 in.AnyAny
TP2, TP3, TP4, TP5, TP6, TP76Test point, yellow, through-hole0.125 in. × 0.125 in.Keystone5014
U11Dual Synchronous Step-Down ControllerWith OOA Operation and 100-mA LDOQFN-24TITPS51123RGE
VBAT_GND, VBAT, VO1, VO2, VO1_GND, VO2_GND6Pin, wiring terminal0.12(D) × 0.4 inchMill Max3138-2-00-15-00-00-080
–1PCB, 3.53.5 in. × 2.7 in. × 0.062 in.AnyTPS51123-EVM
2Shunt, 2POs, gold0.100 × 0.200 inchMolex15-29-1025
4Standoff M/F hex 4-40 nylon0.625 inchKeystone4803
4Nut hex 4-40 nylon0.25 inchBuilding FastenersNY HN 440