bq40z60 Unit Datasheet

bq40z60 Datasheet PDF, Equivalent


Part Number

bq40z60

Description

Programmable Battery Management Unit

Manufacture

etcTI

Total Page 30 Pages
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bq40z60
SLUSAW3D – DECEMBER 2014 – REVISED JANUARY 2017
bq40z60 Programmable Battery Management Unit
1 Features
1 Fully Integrated 2-Series to 4-Series Cell Li-Ion or
Li-Polymer Battery Management Unit
• Input Voltage Range on Pack+: 2.5 V to 25 V
• Battery Charger Efficiency > 92%
• Battery Charger Operation Range: 4 V to 25 V
• Battery Charger, 1-MHz Synchronous Buck
Controller for External NFETs
– Soft Start to Limit In-Rush Current
– Current Limit Protection for External Switches
– Programmable Charging
– Supports JEITA/Enhanced Charging Modes
• Fuel Gauging
– High Resolution 16-Bit Integrator for Coulomb
Counter
– ADC, 16-Bit for Precision V, I, and T
Measurements with 16-Channel Multiplexer
– Support for Simultaneous CC and ADC
Sampling (Power Conversion)
– Supports Two-Wire SMBus v2.0 Interface with
Accelerated 400-kHz Programming Option
– SHA-1 Hash Message Authentication Code
(HMAC) Responder for Increased Battery Pack
Security
– Split Key (2 × 64) Stored in Secure Memory
– Supports Field Updates
• AFE Protection
– Programmable Current Protection
– Overcurrent in Discharge
– Short-Circuit Current in Charge
– Short-Circuit Current in Discharge
• N-FET High-Side Protection FET Drive
• Support for Four LEDs
• Thermistor inputs for NTC
• Compact 32-Pin QFN Package (RHB)
3 Description
The Texas Instruments bq40z60 device is a
Programmable Battery Management Unit that
integrates battery charging control output, gas
gauging, and protection for completely autonomous
operation of 2-series to 4-series cell Li-Ion and Li-
Polymer battery packs. The architecture enables
internal communication between the fuel gauging
processor and battery charger controller to optimize
the charging profile based on the external load
conditions and power path source management
during load transients and adaptor current limitations
in the system. The charging current efficiency is
scalable for power transfer based on the external
components, such as the NFETs, inductor, and
sensing resistor.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
bq40z60
VQFN (32)
5.00 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
Power
Adapter
FUSE
SMBD
SMBC
GPIO0
GPIO1
SMBD
SMBC
GPIO0
GPIO1
Pack–
AFEFUSE
DSG
CHG
BAT
VC4
VC3
VC2
VC1
Copyright © 2017, Texas Instruments Incorporated
2 Applications
• Notebooks, Ultrabooks, Netbooks, Tablets,
UMPCs
• Medical and Test Equipment
• Portable Instrumentation
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.

bq40z60
bq40z60
SLUSAW3D – DECEMBER 2014 – REVISED JANUARY 2017
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (continued)......................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ...................................... 5
7.2 ESD Ratings.............................................................. 5
7.3 Recommended Operating Conditions....................... 5
7.4 Thermal Information .................................................. 6
7.5 Supply Voltage .......................................................... 6
7.6 Supply Current .......................................................... 7
7.7 Power Supply Control ............................................... 7
7.8 Low-Voltage General Purpose I/O (TSx) .................. 7
7.9 High-Voltage General Purpose I/O (GPIO0, GPIO1) 8
7.10 AFE Power-On Reset ............................................. 8
7.11 Internal 1.8-V LDO ................................................. 8
7.12 Current Wake Comparator...................................... 9
7.13 Coulomb Counter .................................................... 9
7.14 CC Digital Filter....................................................... 9
7.15 ADC......................................................................... 9
7.16 ADC Digital Filter .................................................. 10
7.17 ADC Multiplexer .................................................... 10
7.18 Cell Balancing Support ......................................... 10
7.19 Cell Detach Detection ........................................... 10
7.20 Internal Temperature Sensor ................................ 11
7.21 NTC Thermistor Measurement Support (ADCx) ... 11
7.22 High-Frequency Oscillator..................................... 11
7.23 Low-Frequency Oscillator ..................................... 11
7.24 Voltage Reference 1 ............................................. 11
7.25 Voltage Reference 2 ............................................. 12
7.26 Instruction Flash.................................................... 12
7.27 Data Flash............................................................. 12
7.28 Current Protection Thresholds .............................. 12
7.29 N-CH FET Drive (CHG, DSG)............................... 13
7.30 FUSE Drive (AFEFUSE) ....................................... 14
7.31 Battery Charger Voltage Regulation (VFB)........... 14
7.32 Battery Charger Current Sense (HSRP, HSRN)... 14
7.33 Battery Charger Precharge Current Sense (HSRP,
HSRN)...................................................................... 15
7.34 AC Adapter Fault Detect (HSRN, VCC)................ 15
7.35 Battery Charger Overcurrent Detection (V)HSRP,
(V)HSRN..................................................................... 15
7.36 Battery Charger Undercurrent Detection (V)HSRP,
(V)HSRN..................................................................... 15
7.37 System Operation Detection (V)HSRN.................... 15
7.38 Battery Overvoltage Comparator (VFB)................ 15
7.39 Regulator (REGN)................................................. 16
7.40 PWM High-Side Driver (HiDRV) ........................... 16
7.41 PWM Low-Side Driver (LoDRV)............................ 16
7.42 PWM Information .................................................. 16
7.43 Charger Power-Up Sequence ............................... 16
7.44 Thermal Shutdown Comparator............................ 16
7.45 SMBus High Voltage I/O ....................................... 17
7.46 SMBus................................................................... 17
7.47 SMBus XL ............................................................. 17
7.48 Timing Requirements ............................................ 18
7.49 Typical Characteristics ......................................... 18
8 Detailed Description ............................................ 19
8.1 Overview ................................................................. 19
8.2 Functional Block Diagram ....................................... 20
8.3 Feature Description................................................. 21
9 Application and Implementation ........................ 29
9.1 Application Information .......................................... 29
9.2 Typical Applications ................................................ 30
10 Power Supply Recommendations ..................... 34
11 Layout................................................................... 34
11.1 Layout Guidelines ................................................. 34
11.2 Layout Example ................................................... 36
12 Device and Documentation Support ................. 37
12.1 Related Documentation......................................... 37
12.2 Community Resources.......................................... 37
12.3 Trademarks ........................................................... 37
12.4 Electrostatic Discharge Caution ............................ 37
12.5 Glossary ................................................................ 37
13 Mechanical, Packaging, and Orderable
Information ........................................................... 37
4 Revision History
Changes from Revision C (July 2015) to Revision D
Page
• Changed Simplified Schematic............................................................................................................................................... 1
• Changed Pin Configuration and Functions............................................................................................................................. 3
• Changed Absolute Maximum Ratings ................................................................................................................................... 5
• Changed Recommended Operating Conditions .................................................................................................................... 6
• Changed High-Voltage General Purpose I/O (GPIO0, GPIO1) ............................................................................................. 8
• Changed Detailed Description Overview ............................................................................................................................. 19
• Changed Functional Block Diagram .................................................................................................................................... 20
• Changed Internal Power Source Selection........................................................................................................................... 22
• Changed Power Path Overview .......................................................................................................................................... 25
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Copyright © 2014–2017, Texas Instruments Incorporated


Features Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity bq40z60 SLUSAW3D – DECEMBER 2 014 – REVISED JANUARY 2017 bq40z60 Pr ogrammable Battery Management Unit 1 F eatures •1 Fully Integrated 2-Series to 4-Series Cell Li-Ion or Li-Polymer B attery Management Unit • Input Voltag e Range on Pack+: 2.5 V to 25 V • Bat tery Charger Efficiency > 92% • Batte ry Charger Operation Range: 4 V to 25 V • Battery Charger, 1-MHz Synchronous Buck Controller for External NFETs – Soft Start to Limit In-Rush Current Current Limit Protection for External Switches – Programmable Charging – Supports JEITA/Enhanced Charging Modes • Fuel Gauging – High Resolution 1 6-Bit Integrator for Coulomb Counter ADC, 16-Bit for Precision V, I, and T Measurements with 16-Channel Multiplex er – Support for Simultaneous CC and ADC Sampling (Power Conversion) – Sup ports Two-Wire SMBus v2.0 Interface wit h Accelerated 400-kHz Programming Option – SHA-1 Hash Message Authentication Code (HMAC) Respon.
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