Performance Specification Summary

Table 1–2. Performance Specification Summary (Two Cell)

Specification

Test Conditions

Min

Typ

Max

Units

 

 

 

 

 

 

 

Input dc voltage, VDC

 

9.1

9.5

V

Battery charge current, ICHG

J4 shorted, J3 open

0.4

0.5

0.6

A

 

 

 

 

J3 shorted, J4 open

0.9

1

1.1

 

 

 

 

 

 

 

 

 

 

Battery voltage regulation, VREG

J6 set to VCC

8.35

8.40

8.45

V

J6 set to GND

8.15

8.20

8.25

 

 

 

 

 

 

 

 

 

 

Therm fault

High, TBATMAX

J2 set to Therm

43

48

53

° C

Low, TBATMIN

J2 set to Therm

0

5

10

 

 

APG (user defined, see data sheet)

J2 set to APG

 

 

 

 

 

 

 

 

 

Power dissipation, PD

(VI-VO) × Iload

 

 

2.3

W

VI, for a 2-cell, should not exceed 9.1 VDC for the 1-A charge rate and 10.6 V for the 0.5-A charge rate. (VI is the input voltage to the bq2400x IC, pins 2 and 3. The power supply source voltage, at J1, is 0.1 V larger than VI because of the regulated voltage

drop across the current sense resistor, during constant current regulation.)

If J2 is set to APG, then the chip will be disabled when the input is outside of this range: 4.02 V± 0.07 V and 10.76 V ± 0.09 V.

Introduction1-3

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Texas Instruments SLUU083A manual Performance Specification Summary Two Cell

SLUU083A specifications

Texas Instruments SLUU083A, technically known as the "Application Report: PFC Design With TL497," is a seminal document that provides comprehensive insights into the design and implementation of power factor correction (PFC) circuits using the TL497 PWM controller. This application report is crucial for engineers focused on enhancing power efficiency in various applications, particularly in consumer electronics and industrial equipment.

One of the main features of the SLUU083A report is its detailed exploration of power factor correction, which helps in reducing energy consumption and minimizing the impact of harmonic distortion on electrical systems. The document outlines PFC methodologies that comply with international standards and regulatory requirements, ensuring that designers can create products that meet strict energy efficiency regulations.

The report introduces the TL497 as a versatile PWM controller that plays a pivotal role in managing power conversion processes. This controller offers features like a wide input voltage range, making it suitable for various applications from 85V AC to 265V AC. It also incorporates a high degree of integration, which simplifies designs and minimizes the size of PFC circuits.

The application report covers technologies such as continuous conduction mode (CCM) and discontinuous conduction mode (DCM), showcasing the advantages and trade-offs of each mode. Using CCM enhances efficiency under heavy loads, whereas DCM results in reduced power losses at light loads, presenting designers with options tailored to their specific requirements.

Another noteworthy characteristic of the SLUU083A report is its emphasis on component selection and layout guidelines that optimize performance and reliability. The report provides helpful calculations and design examples, illustrating how to achieve a desired output voltage and minimize losses.

In conclusion, Texas Instruments SLUU083A serves as an essential resource for engineers designing PFC circuits with the TL497 PWM controller. Its emphasis on efficiency, regulatory compliance, and practical design considerations makes it a valuable reference in the field of power management. The integration of innovative technologies and robust guidelines ensures that designers can create systems that not only comply with regulations but also provide reliable and effective power conversion. This combination of features and characteristics establishes SLUU083A as a go-to document for advancing power efficiency solutions in diverse applications.