Datasheet
3 Schematic, Bill of Materials, and Board Layout
3.1 Schematic
3.2 Bill of Materials
Schematic, Bill of Materials, and Board Layout
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This section provides the TPS61087EVM bill of materials and schematics. Compensation is optimized for
stability for different LC output filters. To optimize for fast transient response, see Section 2.3 .
Figure 1. TPS61087EVM Schematic
Table 3. HPA317A Bill of Materials
RefDes Value Description Size Part Number MFR
C1, C2 10 µ F Capacitor, Ceramic, 10V, X7R or X5R, 10% 0805 GRM21BR71A106KE51 or Murata or
LMK212BJ106KG-T Taiyo Yuden
C3 1 µ F Capacitor, Ceramic, 16V, X7R or X5R, 10% 0805 GRM21BR71C105KA01 or Murata or
EMK212B7105KG-T Taiyo Yuden
C4 33 nF Capacitor, Ceramic, 16V, X7R, 10% 0805 Std Std
C5 Open Capacitor, Ceramic, 16V, X7R 0805 Std Std
C6 2.7 nF Capacitor, Ceramic, 16V, X7R, 10% 0805 Std Std
C7, C8, C9, 10 µ F Capacitor, Ceramic, 25V, X7R or X5R, 10% 1206 GRM31CR61E106KA12 or Murata or
C10 TMK316BJ106KL-T Taiyo Yuden
D1 SL22 Diode, Schottky Rectifier, 2A, 20 V DO-214AA SL22 Vishay
J1, J4 Header, Male 6-pin, 100mil spacing 0.100 inch x 6 Std Std
J2, J3 Header, Male 3-pin, 100mil spacing 0.100 inch x 3 Std Std
L1 3.3 µ H Inductor, SMT, 3.42A, 24 milliohm 0.288 x 0.288 inch 7447789003 Wurth
Elektronik
R1 16k Resistor, Chip, 1/10W, 1% 0805 Std Std
R2 200k Resistor, Chip, 1/10W, 1% 0805 Std Std
R3 18k Resistor, Chip, 1/10W, 1% 0805 Std Std
R4 0 Resistor, Chip, 1/10W, 5% 0805 Std Std
U1 TPS61087DSC IC, 600kHz/1.2MHz Step-Up DC-DC Converter SON-10 TPS6108DSC TI
— PCB 2.4 In x 1.65 In x HPA317 Any
0.062 In
— Shunt, 100-mil, Black 0.100 929950-00 3M
TPS61087EVM 4 SLVU230A – August 2008 – Revised January 2009
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