Texas Instruments TPS40090EVM-002 - Manual (Page 25)

SLUU195 − June 2004
25 TPS40090 Multi-Phase Buck Converter and TPS2834 Drivers Steps-Down from 12-V to 1.5-V at 100 A
Reference
Designator
QTY Description Size Manufacturer Part Number
R27, R28, R29,
R30
4 Resistor, chip, 2.2 Ω , 1/10−W, 1% 805 Std Std
R31, R32,R35,
R36
4 Resistor, chip, 19.6 k Ω , 1/10−W, 1% 805 Std Std
R33, R34, R37,
R38, R41, R42,
R45, R46
8 Resistor, chip, 2.7 Ω , 1/16−W, 1% 603 Std Std
R39, R40, R43,
R44
4 Resistor, chip, 22.6 k Ω , 1/10−W, 1% 805 Std Std
R47, R49, R51,
R52
4 Resistor, chip, 124 k Ω , 1/10−W, 1% 805 Std Std
R48, R50, R53,
R54
4 NTC Resistor, chip, 100 k Ω , 1/10-W, 1% 805 Vishay
NTHS0603N01N1003
J
R65, R66 2 Resistor, chip, 1.0 k Ω , 1/10-W, 1% 805 Std Std
TP1 1 Test point, 0.062 Hole, Red 0.25 Keystone 5011
TP2 1 Test point, 0.062 Hole, Black 0.25 Keystone 5010
U1 1 IC, high-frequency, multiphase controller 108,800 TI TPS40090PW
U2, U3, U4, U5 4 IC, MOSFET driver, fast synchronous buck with DTC PWP14 TI TPS2834PWP
U6 1 IC, Precision timer TSSOP 8 TI NE555PW
E1, E2 2 Test point, black, 1 mm 0.038 Farnell 240−333
LOAD TRANSIENT CIRCUIT
Q17 1 MOSFET, N-channel, 12 V, 29 A, 3.0 m Ω ,
PWRPAK
S0−8
Si7858DP
Q18 0 MOSFET, N-channel, 12 V, 29 A, 3.0 m Ω ,
PWRPAK
S0−8
Si7858DP
R18, R19, R21 3 Resistor, chip, 0.050 Ω ,, 1-W, 0.5% 2512 Vishay
WSL−2512−R050
0.5% R86
R20, R22 0 Resistor, chip, 0.050 Ω ,, 1-W, 0.5% 2512 Vishay
WSL−2512−R050
0.5% R86
R23, R24 2 Resistor, chip, 10 Ω , 1/16−W, 1% 603 Std Std
R25 1 Resistor, chip, 143 k Ω , 1/10−W, 1% 805 Std Std
R26 1 Resistor, chip, 1.43 k Ω , 1/10−W, 1% 805 Std Std
C27, C28 2 Capacitor, ceramic, 0.1 µ F, 25 V, X7R, ± 10% 805 TDK C2012X7R1E104K
C29 1 Capacitor, ceramic, 0.01 µ F, 50 V, X7R, ± 5% 805 muRata GRM40UJ103J50
D5 1 Diode, dual ultra fast, series, 200 mA, 70 V SOT23 Fairchild BAV99
D6 1 Diode, dual schottky, 200 mA, 30 V SOT23 Vishay−Liteon BAT54C
J3 1 Header, 3-pin, 100 mil spacing, (36-pin strip) 0.100 x 3 Sullins PTC36SAAN
PRE-BIAS CIRCUIT
U7 1 IC, Single GP comparator, low voltage SOT23−5 National LMV331M5
J11 1 Header, 2-pin, 100 mil spacing, (36-pin strip) 0.100 x 2 Sullins PTC36SAAN
R13, R15, R17,
R58
4 Resistor, chip, 10 k Ω , 1/16−W, 1% 603 Std Std
R57 1 Resistor, chip, 1 M Ω , 1/10−W, 1% 805 Std Std
R14 1 Resistor, chip, 8.66 k Ω , 1/16−W, 1% 603 Std Std