Circuit Module Physical Layouts And Bill Of Materials; List Of Figures 1 Bq20Z95Evm-001 Layout (Silk Screen); Components And Flash-Memory Settings For Different Precharge Modes - Texas Instruments bq20z95EVM-001 User Manual

Circuit Module Physical Layouts and Bill of Materials

Table 2. Components and Flash-Memory Settings for Different Precharge
MODE
1. 0-V Chg (default)
2. Common FET
3. Precharge
For more details about precharge operation and mode choices, see the bq20z95 data sheet at
(SLUS757).
3.3 Testing Fuse-Blowing Circuit
To prevent the loss of board functionality during the fuse-blowing test, the actual chemical fuse is not
provided in the circuit. FET Q4 drives TP3 low if a fuse-blow condition occurs; so, monitoring TP3 can be
used to test this condition. Fuse placement on the application board is shown in the bq20z95 data sheet
reference-board schematic.
4 Circuit Module Physical Layouts and Bill of Materials
This section contains the board layout, bill of materials, and assembly drawings for the bq20z95/bq29412
circuit module.
4.1 Board Layout
This section shows the dimensions, PCB layers
bq20z95 module.
4 bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology
Enabled Battery Management Solution Evaluation Module
Modes
RESISTORS PRECHG FET
R21, R28
R24
R23, R28
(Figure 1
Figure 1. bq20z95EVM-001 Layout (Silk Screen)
ZVCHG1
Q3 0
Q2 0
Q3 1
through Figure 5), and assembly drawing for the
www.ti.com
ZVCHG0
0
1
0
SLUU275 – October 2006
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