Manual de instrucciones de Texas Instruments bq24010/2

Manual de instrucciones del aparato Texas Instruments bq24010/2

Aparato: Texas Instruments bq24010/2
Categoría: Cargador
Fabricante: Texas Instruments
Tamaño: 0.12 MB
Fecha de añadido: 5/28/2013
Número de páginas: 18
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Resumen del contenido incluido en la página 1

 
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User’s Guide
January 2003 PMP Portable Power
SLUU125A

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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the t

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EVM IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety measures typically found in the end product

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EVM WARNINGS AND RESTRICTIONS It is important to operate this EVM within the input voltage range of 5.6 V and the output voltage range of 0 V and 4.25 V. Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions concerning the input range, please contact a TI field representative prior to connecting the input power. Applying loads outside of the specified output range may result in unintended operation and/or possible permane

Resumen del contenido incluido en la página 5

Contents Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.1 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.2 Performance Specification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 2 Test Summary . . . . . . . . . . . . . . . . . .

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Contents vi

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Chapter 1 Introduction This user’s guide describes the bq24010/2 (bqTINY) evaluation module. The EVM provides a convenient method for evaluating the performance of a charge-management solution for portable applications using the bq24010/2 product family. A complete designed and tested charger is presented. The charger is designed to deliver up to 1.0 A of continuous charge current, but is programmed for 0.7 A, for single-cell Li-Ion or Li-Pol applications using a dc power supply. Topic Page 1

Resumen del contenido incluido en la página 8

Background 1.1 Background The bqTINY series are highly integrated Li-Ion and Li-Pol linear charge management devices targeted at space limited portable applications. In a small package, the bqTINY series offer integrated PowerFET and current sensor, reverse blocking diode, high accuracy current and voltage regulation, charge status, and charge termination. The bqTINY charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated on the basis of mi

Resumen del contenido incluido en la página 9

Chapter 2 Test Summary This chapter shows the test setups used and the tests performed in evaluating the EVM. Setup: The bq24010/2 EVM board requires a 5-VDC, 1-A power source to provide input power and a single-cell Li-Ion or Li-Pol battery pack. The test set- up connections and jumper setting selections are configured for a stand-alone evaluation but can be changed to interface with external hardware, such as a microcontroller. Topic Page 2.1 I/O and Jumper Connecations . . . . . . . . . .

Resumen del contenido incluido en la página 10

I/O and Jumper Connections 2.1 I/O and Jumper Connections Jack Connect To: J1–DC+ Power supply positive, preset to 5.0VDC, 1-A current limit. J1–DC– Power supply ground J2–BAT+ Positive battery pack terminal J2–BAT– Negative battery pack terminal J2–TS NC J2–BAT– NC J3–STAT1 External hardware if J4-EXT is jumpered (Not jumpered from factory) J3–STAT2 External hardware if J5-EXT is jumpered (Not jumpered from factory) J3–DC– Return for J3 signals J3–PG External hardware if J6–EXT if jumpered (Not

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Test Procedure In place of a battery, a source meter that can sink current can easily be adjusted to test each mode. Another way to briefly see each mode on a scope is to connect a 1-mF capacitor and a 10-kΩ resistor on the output in place of a battery to observe the power-up and cycling between voltage regulation and fast charge via the refresh threshold. The difference between the bq2401x parts, where x is a 0 or 2, is as follows: The functions on the 0 part are power good output (PG) for pin

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Test Procedure 2.2.1 Equipment 1) Power source: current-limited 5-V lab supply with its current limit set to 1.0 A ±0.1 A 2) Two Fluke 75, equivalent or better 3) Oscilloscope – TDS220 or better 4) Load test board (See Figure 2–1.) Figure 2–1. Load Test Board Power Supply DMM S4 S1 S2 S3 UUT 5.1 V ± 0.1 V Volts R1 bq24010/2 EVM Current Limit 5 Ω 1 A ± 0.1 A BAT+ 5 W BAT+ R4 D1 + DMM DC+ C1 R5 66.5 Ω 1N4148 2000 µ F 66.5 Ω 0.25 W – DC– 25 V 0.25 W BAT– BAT– R3 8 7 6 5 8 7 6 5 3 kΩ 0.25 W Q1 Q2

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Test Procedure 4) Verify that output voltage BAT+ settles between 3.2 V and 3.95 V. 5) Verify that the input current is between 0.69 A and 0.75 A. 6) Open switch SW3. 7) Verify that the input current is between 100 mA and 150 mA. 8) Verify the output voltage BAT+ is between 4.150 VDC and 4.250 VDC. 9) Open switch SW2. 10) Verify with a scope (250 ms/div, 1 V/div) that output BAT+ charges and discharges are between the maximum limits of 3 V and 4.35 V, with a period between 600 ms and 850 ms. 11)

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Chapter 3 Schematic, Physical Layouts, and Bill of Materials This chapter contains the schematic diagram, the board layouts and assembly drawings, and the bill of materials required for the EVM. Topic Page 3.1 Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.2 Physical Layouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 3.3 Bill of Materials . . . . . . .

Resumen del contenido incluido en la página 15

Schematic 3.1 Schematic Figure 3–1. EVM Schematic Diagram µ Ω µ Ω J6 3 2 1 Ω Ω Ω µ J5 3 2 Ω 1 J4 3 2 1 Ω 3-2 U1 bq24010 J1 1 110 4 BAT+ DC+ IN OUT 2 29 3 DC– BAT– VCC BAT 2 38 TS(/CE) 2 STAT1 TS 1 47 C1 C2 BAT– STAT2 PG 1 F 1 F 56 R1 R2 VSS ISET J2 10 V 10 V 1.5 k 1.5 k 11 R3 1 TP1 1 M D1 D2 R5 2 D3 C3 Red Green 1.5 k R6 R4 0.47 F Green 1 M 1.13 k J3 TP2 1 STAT1 2 STAT2 3 DC– 4 PG LED EXT LED EXT LED EXT STAT1 JUMPER STAT2 JUMPER PG JUMPER 1 Not installed 2 bq24012 EVM (IC)– TS pin becomes /C

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Physical Layouts 3.2 Physical Layouts 3.2.1 Board Layout Figure 3–2 shows the assembly view of the EVM. Figure 3–3 shows the top layer. Figure 3–4 shows the bottom layer. Figure 3–2. Assembly View Schematic, Physical Layouts, and Bill of Materials 3-3

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Physical Layouts Figure 3–3. Top Layer Figure 3–4. Bottom Layer 3-4

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Bill of Materials 3.3 Bill of Materials Table 3–1 lists materials required for the EVM. Table 3–1.Bill of Materials bq24010 bq24012 Ref Item# –1 –2 Des Description Size MFR Part Number 1 0 0 C1 Capacitor, ceramic, X5R, 805 Panasonic ECJ-2YB1A105K 1 µ F, 10 V 2 1 1 C2 Capacitor, ceramic, X5R, 805 Panasonic ECJ-2YB1A105K 1 µ F, 10 V 3 1 1 C3 Capacitor, ceramic, X7R, 805 Panasonic ECJ-2YB1C474K 0.47 µ F, 16 V 4 1 1 D1 Diode, LED, red, 1.8 V, 603 Lite-On 160-1181-1-ND 20 mA, 20 mcd 5 2 2 D2, D3 Diod


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