SLUU194A May   2004  – March 2022 TPS51020

 

  1.   Trademarks
  2. 1Introduction
  3. 2Electrical Performance Specifications
    1. 2.1 Performance Specification Summary
  4. 3TPS51020EVM-001 Circuit Module Schematic
  5. 4Test Setup and Results
    1. 4.1 Test Setup
    2. 4.2 Power Up and Power Down
    3. 4.3 Efficiency and Power Loss
    4. 4.4 Output Ripple
    5. 4.5 Load Transient
    6. 4.6 Loop Characteristics
  6. 5Assembly Drawing and PCB Layout
  7. 6Circuit Module List of Materials
  8. 7References
  9. 8Revision History

6 Circuit Module List of Materials

RERERENCE DESIGNATOR QTY DESCRIPTION SIZE MFR PART NUMBER
C1, C4, C12, C13, C16, C17 6 Capacitor, ceramic, 2.2 mF, 25 V, X5R, 10% 1210 Panasonic ECJ−4YB1E225K
C2, C15 2 Capacitor, ceramic, 6800 pF, 25 V, X7R, 10% 805 Std Std
C3, C11, C19, C25 0 Capacitor, ceramic, TBD 805 Std Std
C24 1 Capacitor, ceramic, 4.7 mF,25 V, X5R, 10% 805 Panasonic ECJ−2FB1E475M
C22 1 Capacitor, ceramic, 3300 pF, 25 V, X7R, 5% 805 Std Std
C14 1 Capacitor, aluminum solid cap, with conductive polymer 22 mF, 35 V, 20% 8.3m (E7) Sanyo 35SVPD22M
C5 1 Capacitor, ceramic, 3900 pF, 25 V, X7R, 5% 805 Std Std
C6, C18, C27 3 Capacitor, ceramic, 0.1 mF,25 V, X7R, 10% 805 Std Std
C7, C26 2 Capacitor, aluminum, 150 mF, 6.3 V, 20% (UE Series) 7343 Panasonic EEF−UE0J151R
C8, C20 0 Capacitor, aluminum, 150 mF, 6.3 V, 20% (UE Series) 7343 Panasonic EEF−UE0J151R
C9, C10, C21, C23 4 Capacitor, ceramic, 0.01 mF, 25 V, X7R, 10% 805 Std Std
L1, L2 2 Inductor, SMT, 4.0 mH,10.3 A, 8.0 mW 0.492 sq” Sumida CEP125(H)−4R0
ShortsJumper 3 STC02SYAN Shorts Jumper Sullins N/A
JP, JP2, JP3 3 Header, 3 pin, 100-mil spacing (36-pin strip) 0.100´ 3 Sullins PTC36SAAN
R1, R9 2 Resistor, chip, 49.9 W,1/10−W, 1% 805 Vishay Std
R10, R18 2 Resistor, chip, 1M W,1/10W, 1% 805 Vishay Std
R4 1 Resistor,chip, 1.82 kW,1/10W, 1% 805 Vishay Std
R21 1 Resistor, chip, 2.74 kW,1/10W, 1% 805 Vishay Std
R11 1 Resistor, chip, 3.92 kW,1/10W, 1% 805 Vishay Std
R2, R24 2 Resistor, chip, 10.0 kW,1/10W, 1% 805 Vishay Std
R7, R26 2 Resistor, chip, 15 W,1/10W, 1% 805 Vishay Std
R12, R13 2 Resistor, chip, 18.2 kW,1/10W, 1% 805 Vishay Std
R22 1 Resistor, chip, 28.7 kW,1/10W, 1% 805 Vishay Std
R5 1 Resistor, chip, 48.7 kWs,1/10W, 1% 805 Vishay Std
R14,R15, R16, R27 4 Resistor, chip, 100 kW,1/10W, 1% 805 Vishay Std
R3, R25 2 Resistor, chip, 332 W,1/10W, 1% 805 Vishay Std
R8, R19 2 Resistor, chip, 0 W,1/10W, 1% 805 Vishay Std
J1, J2, J3 3 Terminal block, 2 pin, 15 A, 5.1 mm 0.40´ 0.35 OST ED1609
TP1,TP3, TP6, TP8, TP10 5 Test point, 0.062 hole, red 0.25 Keystone 5011
TP2, TP4, TP5, TP7, TP9, TP14 6 Test point, 0.062 hole, black 0.25 Keystone 5010
U1 1 Dual voltage mode, DDR selectable, synchronous, step-down controller for notebook TSSOP30 TI TPS51020DBT
TP11,T12, TP13 3 Adaptor, 3.5-mm probe clip (or 131−5031−00) 0.2 Tektronix 131−4244−00
Q1, Q6 2 Transistor, MOSFET, N-channel, 30 V, 8.4 A, Rds 22 mW SO−8 Fairchild FDS6612A
Q2, Q4 2 Transistor, MOSFET, N-channel, 30 V, 10 A, Rds 16 mW SO−8 Fairchild FDS6690S
Q3, Q5 0 Transistor, MOSFET, N-channel, 30 V, 10 A, Rds 16 mW SO−8 Fairchild FDS6690S