S-19193 Series Automotive Battery Monitoring IC

Product Highlights > S-19193 Series Automotive Battery Monitoring IC

            S-19193 Series Automotive Battery Monitoring IC
                    The S-19193 series from ABLIC achieves an ASIL-B(D) classification based on specific use case assumptions
    

Image of ABLIC S-19193 Series Automotive Battery Monitoring IC The S-19193 series from ABLIC can continue monitoring the battery cell when it is overcharged and overdischarged through the standalone operation without micro-controlling. Even in case of the main monitoring system failure, it can continue the battery monitoring function and realize the fail-operational BMS. The S-19193 series is a functional, safety-compliant product developed according to a process that adheres to ISO26262. It achieves an ASIL-B(D) classification based on specific use case assumptions. Using the current monitoring circuit as the primary monitoring system and configuring the secondary monitoring system with this IC, the BMS can achieve ASIL-D classification by applying ASIL decomposition.

Resources

Features

High-accuracy voltage detection circuit for each cell

Overcharge detection voltage n: 2.500 V to 4.500 V (25 mV step)

Accuracy ±20 mV (T_A = +25°C)
Accuracy ±30 mV (T_A = -5°C to +55°C)

Overcharge release voltage n: 2.300 V to 4.500 V [Overcharge release voltage = Overcharge detection voltage - Overcharge hysteresis voltage (Overcharge hysteresis voltage n is selectable from 0 V to 400 mV in 50 mV steps)]

Accuracy ±50 mV

Overdischarge detection voltage n: 1.000 V to 3.000 V (100 mV step) (When this IC is used for monitoring a 3-serial-cell battery, set the overdischarge detection voltage n to 1.6 V or higher)

Accuracy ±80 mV

Overdischarge release voltage n: 1.000 V to 3.300 V [Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage (Overdischarge hysteresis voltage n is selectable from 0 V to 0.7 V in 100 mV steps)

Accuracy ±100 mV

AEC-Q100 in process (Contact ABLIC sales representatives for details)
This IC has been developed for the battery management system per ISO 26262
Lead-free (Sn 100%), halogen-free
Switching control for a 3-serial to a 6-serial cell is possible by inputting voltage to the SEL1 pin and the SEL2 pin
Self-test results to confirm overcharge and overdischarge detection operations can be output from the OUT1 pin and the OUT2 pin
Cascade connection function:

Battery voltage monitoring of multiple modules is possible by connecting the upper module output to the CASI1 pin and the CASI2 pin

Each delay time is set by an internal circuit only (External capacitors are not necessary; set the delay time to detection delay time > release delay time)

Detection delay time: 0.5 ms, 1 ms, 2 ms, 4 ms, 8 ms, 16 ms, 32 ms, 64 ms, 128 ms, and 256 ms
Release delay time: 0.25 ms, 0.5 ms, 1 ms, 2 ms, 4 ms, 8 ms, and 16 ms

Two detection signal types

Common:

OUT1 pin: Overcharge and overdischarge detection signal
OUT2 pin: Overcharge detection signal

Separate:

OUT1 pin: Overcharge detection signal
OUT2 pin: Overdischarge detection signal

OUT1 pin, OUT2 pin output form

CMOS output

OUT1 pin, OUT2 pin output logic

Active "H"

High-withstand voltage

Absolute maximum rating 28.0 V

Wide operation voltage range

4.8 V to 28.0 V

Wide operation temperature range

T_A = -40°C to +125°C

Low current consumption

During operation: 20 μA max. (T_A = +25°C)

ABLIC Inc. can provide a safety manual for this IC (Contact ABLIC sales representatives for details; a non-disclosure agreement is necessary when providing the documents)

Applications

Automotive rechargeable battery pack (EV, HEV, PHEV, and more)