BQ76200 Datasheet, PDF (1/27 Pages) Texas Instruments – High Voltage Battery Pack Front-End Charge/Discharge High-Side NFET Driver

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bq76200
SLUSC16 – NOVEMBER 2015
bq76200 High Voltage Battery Pack Front-End Charge/Discharge High-Side NFET Driver
1 Features
•1 CHG and DSG High-Side NMOS FET Drivers for
Battery Protection Fast FET Turn-On and Turn-Off
Times
• Pre-Charge PFET Driver (for Current-Limited Pre-
charge of Significantly Depleted Cell-pack)
• Independent Digital Enable Control for Charging
and Discharging
• Minimal External Components Needed
• Scalable External Capacitor-Based Charge Pump
to Accommodate a Different Range of FETs in
Parallel
• High-Voltage Tolerant (100-V Absolute Maximum)
• Internal Switch to Enable Pack-Voltage Sensing
• Common and Separate Charge and Discharge
Path Configuration Support
• Designed to Work Directly With bq76940,
bq76930, and bq76920 Battery Monitors
• Current Consumption:
– NORMAL Mode: 40 µA
– SHUTDOWN: < 10 µA Maximum
2 Applications
• eBikes, eScooters, and eMotorcycles
• Energy Storage Systems and Uninterruptible
Power Supplies (UPS)
• Portable Medical Systems
• Wireless Base-Station Battery Systems
• Lead Acid (PbA) Replacement Batteries
• 12-V to 48-V Battery Packs
3 Description
The bq76200 device is a low-power, high-side, N-
Channel system. A high-side protection avoids
ground disconnection in the system and also allows
continuous communication between the battery pack
and host system. The device has additional P-
Channel FET control to allow low-current pre-charge
to a deeply depleted battery, and a PACK+ voltage
monitor control for the host to sense the PACK+
voltage.
The independent enable inputs allow CHG and DSG
FETs to be turned on and off separately, offering
great implementation flexibility in battery systems.
The bq76200 device can be used with a companion
Analog Front End device such as the bq76920/30/40
family, a 3-series to 15-series Cell Analog Front End
Monitoring, and a host microcontroller or dedicated
state-of-charge (SOC) tracking gas gauge device.
PART NUMBER
bq76200
Device Information⁽¹⁾
PACKAGE
BODY SIZE (NOM)
TSSOP (16)
5.00 × 4.40 × 1.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
1M
100
470 nF
0.01 µF
From AFE
or
MCU
bq76200
VDDCP
CHG
BAT
NC
NC
PCHG
CHG_EN
NC
CP_EN
DSG
DSG_EN
PACK
PMON_EN PACKDIV
PCHG_EN
VSS
10 M
PACK+
10 M
100
Ra
To ADC
Rb
0.01 µF
PACK-
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.