bq30z554-R1

SLUSBD4 – OCTOBER 2013

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FEATURE SET

Protections Safety Features

The bq30z554-R1 supports a wide range of battery and system protection features that can easily be configured.

The Protections safety features include:

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Cell Undervoltage Protection

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Cell Undervoltage I*R Compensated Protection

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Cell Overvoltage Protection

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Overcurrent in Charge Protection 1 and 2

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Overcurrent in Discharge Protection 1 and 2

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Overload in Discharge Protection

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Short Circuit in Charge Protection

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Short Circuit in Discharge Protection 1 and 2

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Overtemperature in Charge Protection

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Overtemperature in Discharge Protection

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Overtemperature FET protection

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SBS Host Watchdog Protection

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Precharge Timeout Protection

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Fast Charge Timeout Protection

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Overcharge Protection

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Overcharging Current Protection

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Overcharging Voltage Protection

Permanent Fail Safety Features

The FUSE pin can be used to blow an in-line fuse to permanently disable the battery pack from charging or

discharging. Upon a Permanent Fail event trigger, critical system information is written to non-volatile memory to

simplify failure analysis. In addition, the black box stores the sequence of safety events also into non-volatile

memory to simplify failure analysis. The Permanent Fail safety features include:

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Cell Undervoltage Protection

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Cell Overvoltage Protection

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Copper Deposition

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Overtemperature Cell

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Overtemperature FET

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QMAX Imbalance

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Cell Balancing

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Capacity Degradation

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Impedance

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Voltage Imbalance at Rest

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Voltage Imbalance Active

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Charge FET and Discharge FET

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Thermistor

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Chemical FUSE

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AFE Register

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AFE Communication

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2nd-Level Protection

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PTC

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Instruction Flash

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Open Cell Tab Connection

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Data Flash

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