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EVM Hardware and Software Setup

4.2 Bill of Materials

Table 2. Bill of Materials

Reference

Count Value Description Size Part Number Manufacturer

Design

Capacitor, Ceramic,

5 C1-5 0.1 µF 0603 STD Any

50 V, X7R, 20%

Fuse, Slo-Blo

0 F1 DNP SFDxxx SFDxxxx Sony

Ceramic, xxA, yyyV

Terminal Block, 4-pin,

1 J1 ED555/4DS 0.55 x 0.25 inch ED555/4DS OST

6-A, 3.5 mm

Terminal Block, 2-pin,

1 J2 ED555/2DS 0.27 x 0.25 inch ED555/2DS OST

6-A, 3.5 mm

MOSFET, Nch, 20 V,

1 Q1 Si1406DH SC-70 Si1406DH Vishay

3.9 A, 65 mΩ

Resistor, Chip, 1/16

1 R1 100 0603 STD Any

W, 1%

Resistor, Chip, 1/16

4 R2-5 1K 0603 STD Any

W, 1%

Resistor, Chip, 1/16

1 R6 100K 0603 STD Any

W, 1%

Test Point, White, 0.125 x 0.125

5 TP1-5 5012 5012 Keystone

Thru Hole inch

IC, Overvoltage

Protection Devices for

1 U1 BQ294502DRV WSON BQ294502DRV TI

2-Series to 4-Series

Cell Li-Ion Batteries

1 — PCB PWR033 Any

4.3 bq294502 Circuit Module Performance Specification Summary

This section summarizes the performance specifications of the bq294502 circuit module.

Table 3. Performance Specification Summary

Specification Min Typ Max Units

Input voltage Pack+ to 5 12 18 V

Pack–

Charge and discharge 0 2 5 A

current

5 EVM Hardware and Software Setup

This section describes how to connect the different components of the bq294502 EVM. Figure 4 shows

how to connect the bq294502 circuit module to the cells and system load/charger. The cells must be

connected in the following order:

1. 3-Cell Pack: VSS (bottom of stack), VC1, VC2, then VC3 (see Section 2.2 for definitions).

2. 2-Cell Pack: VSS (bottom of stack), VC1, and then connect VC2 and VC3 together.

SLUU659– November 2011 bq294502 Voltage Protector for 2-Series or 3-Series Cell Li-Ion Batteries EVM

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