Battery Management System for Automotive

Overall block diagram

Battery Management System for Automotive

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Charging circuit (Prevention of sticking/Detection of mechanical relay sticking)

Charging circuit (Prevention of sticking)

Example of a charging circuit in which a semiconductor switch is configured using a photovoltaic output photocoupler

Charging circuit (Detection of mechanical relay sticking)

Example of a charging circuit in which a photorelay is used to configure a mechanical relay sticking detection circuit

Charging circuit (Ground fault sensing circuit)

Example of a charging circuit in which a ground fault sensing circuit is configured using a photorelay

Passive cell voltage regulation

Passive cell voltage regulation (Use of PMIC)

Example of passive cell voltage regulation circuit using PMIC

Passive cell voltage regulation (Not use of PMIC)

Example of passive cell voltage regulation circuit without PMIC

Battery monitoring circuit

Example of battery total voltage monitoring circuit using photorelay and IC output photocoupler

Adding redundancy to communications

Example of communication redundancy using a photocoupler

Battery shutdown circuit

Example of a battery shutdown circuit using a mechanical relay

Sub block diagram

Charging circuit (Prevention of sticking/Detection of mechanical relay sticking)

Charging circuit (Prevention of sticking)

Example of a charging circuit in which a semiconductor switch is configured using a photovoltaic output photocoupler

Photovoltaic output photocoupler

Photovoltaic output photocoupler

Part Number	TLX9905	TLX9906
Toshiba Package Name	4pin SO6	4pin SO6
BV_S (Min) [V_rms] @ t = 60 [s]	3750	3750
I_SC (Min) [µA] @ I_F = 10 [mA]	12	12
V_OC (Min) [V] @ I_F = 10 [mA]	7	7

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Charging circuit (Detection of mechanical relay sticking)

Example of a charging circuit in which a photorelay is used to configure a mechanical relay sticking detection circuit

Photorelay

Photorelay

Part Number	TLX9175J	TLX9160T
Toshiba Package Name	4pin SO6	SO16L-T
BV_S (Min) [V_rms] @ t = 60 [s]	3750	5000
I_ON (Max) [A]		0.05
R_ON (Max) [Ω]		250
I_FT (Max) [mA]	3	3
I_FC (Max) [mA]

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Charging circuit (Ground fault sensing circuit)

Example of a charging circuit in which a ground fault sensing circuit is configured using a photorelay

Photorelay

Photorelay

Part Number	TLX9175J	TLX9160T
Toshiba Package Name	4pin SO6	SO16L-T
BV_S (Min) [V_rms] @ t = 60 [s]	3750	5000
I_ON (Max) [A]		0.05
R_ON (Max) [Ω]		250
I_FT (Max) [mA]	3	3
I_FC (Max) [mA]

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Passive cell voltage regulation

Passive cell voltage regulation (Use of PMIC)

Example of passive cell voltage regulation circuit using PMIC

General purpose small signal MOSFET

General purpose small signal MOSFET

Part Number	SSM3K7002KF	SSM3J168F	SSM3J66MFV
Toshiba Package Name	SOT-346 (S-Mini)	SOT-346 (S-Mini)	SOT-723 (VESM)
V_DSS (Max) [V]	60	-60	-20
I_D (Max) [A]	0.4	-0.4	-0.8
R_DS(ON) (Max) [Ω] @ \|V_GS\| = 4.5 [V]	1.75	1.9	0.39
Polarity	N-ch	P-ch	P-ch

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Passive cell voltage regulation (Not use of PMIC)

Example of passive cell voltage regulation circuit without PMIC

Photovoltaic output photocoupler
General purpose small signal MOSFET

Photovoltaic output photocoupler

Part Number	TLX9905	TLX9906
Toshiba Package Name	4pin SO6	4pin SO6
BV_S (Min) [V_rms] @ t = 60 [s]	3750	3750
I_SC (Min) [µA] @ I_F = 10 [mA]	12	12
V_OC (Min) [V] @ I_F = 10 [mA]	7	7

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General purpose small signal MOSFET

Part Number	SSM3K7002KF	SSM3J168F	SSM3J66MFV
Toshiba Package Name	SOT-346 (S-Mini)	SOT-346 (S-Mini)	SOT-723 (VESM)
V_DSS (Max) [V]	60	-60	-20
I_D (Max) [A]	0.4	-0.4	-0.8
R_DS(ON) (Max) [Ω] @ \|V_GS\| = 4.5 [V]	1.75	1.9	0.39
Polarity	N-ch	P-ch	P-ch

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Battery monitoring circuit

Example of battery total voltage monitoring circuit using photorelay and IC output photocoupler

Photorelay
IC output photocoupler

Photorelay

Part Number	TLX9175J	TLX9160T
Toshiba Package Name	4pin SO6	SO16L-T
BV_S (Min) [V_rms] @ t = 60 [s]	3750	5000
I_ON (Max) [A]		0.05
R_ON (Max) [Ω]		250
I_FT (Max) [mA]	3	3
I_FC (Max) [mA]

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IC output photocoupler

Part Number	TLX9304	TLX9309	TLX9310	TLX9378	TLX9376
Toshiba Package Name	5pin SO6	5pin SO6	5pin SO6	5pin SO6	5pin SO6
BV_S (Min) [V_rms] @ t = 60 [s]	3750	3750	3750	3750	3750
V_CC / V_DD (Min) [V]	4.5			4.5	4.5
V_CC / V_DD (Max) [V]	20	30		5.5	5.5
I_CC / I_DD (Max) [mA]
Output Interface

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Adding redundancy to communications

Example of communication redundancy using a photocoupler

Transistor output photocoupler

Transistor output photocoupler

Part Number	TLX9291A	TLX9185A	TLX9000	TLX9300	TLX9188
Toshiba Package Name	SO4	4pin SO6	SO4	4pin SO6	4pin SO6
BV_S (Min) [V_rms] @ t = 60 [s]	3750	3750	3750	3750	3750
V_CEO (Max) [V]	80	80	40	40	200
T_opr [°C]	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125

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Battery shutdown circuit

Example of a battery shutdown circuit using a mechanical relay

MOSFET with a built-in active clamp circuit
Low side switch / High side switch (up to 1 A)
Low side switch / High side switch (1 to 5 A)
General purpose small signal bipolar transistor
Small signal bias resistor built-in transistor (BRT)
TVS diode (for CAN communication)

MOSFET with a built-in active clamp circuit

Part Number	SSM3K347R	SSM3K337R
Toshiba Package Name	SOT-23F	SOT-23F
V_DSS (Max) [V]	38	38
I_D (Max) [A]	2.0	2.0
R_DS(ON) (Max) [Ω] @ \|V_GS\| = 4.5 [V]	0.41	0.176
Polarity	N-ch + Active Clamp Zener	N-ch + Active Clamp Zener

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Low side switch / High side switch (up to 1 A)

Part Number	TPD1054F	TPD1052F
Toshiba Package name	PS-8	PS-8
V_BB (Max) [V]
V_CC (Max) [V]
I_O (Max) [A]	1.0	0.8

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Low side switch / High side switch (1 to 5 A)

Part Number	TPD1058FA	TPD1055FA
Toshiba Package name	WSON10	WSON10
V_BB (Max) [V]
V_CC (Max) [V]
I_O (Max) [A]	6.0	3.0

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General purpose small signal bipolar transistor

Part Number	2SA1832	2SC4738	2SC4116	2SA1586	2SC2712	2SA1162
Toshiba Package Name	SOT-416 (SSM)	SOT-416 (SSM)	SOT-323 (USM)	SOT-323 (USM)	SOT-346 (S-Mini)	SOT-346 (S-Mini)
V_CEO (Max) [V]	-50	50	50	-50	50	-50
I_C (Max) [A]	-0.15	0.15	0.15	-0.15	0.15	-0.15
Polarity	PNP	NPN	NPN	PNP	NPN	PNP

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Small signal bias resistor built-in transistor (BRT)

Part Number	RN1907FE	RN2907FE	RN1901	RN2901
Toshiba Package Name	SOT-563 (ES6)	SOT-563 (ES6)	SOT-363 (US6)	SOT-363 (US6)
V_CEO (Q1) (Max) [V]	50	-50	50	-50
V_CEO (Q2) (Max) [V]	50	-50	50	-50
I_C (Q1) (Max) [A]	0.1	-0.1	0.1	-0.1
I_C (Q2) (Max) [A]	0.1	-0.1	0.1	-0.1
Polarity (Q1)	NPN	PNP	NPN	PNP
Polarity (Q2)	NPN	PNP	NPN	PNP

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TVS diode (for CAN communication)

Part Number	DF3D18FU	DF3D29FU	DF3D36FU
Toshiba Package Name	SOT-323 (USM)	SOT-323 (USM)	SOT-323 (USM)
V_ESD (Max) [kV]	+/-30	+/-25	+/-20
I_R (Max) [µA]	0.1	0.1	0.1
R_dyn (Typ.) [Ω]	0.8	1.1	1.5
C_T (Typ.) [pF] @ V_R = 0 [V], f = 1 [MHz]	9	9	6.5

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Documents

Please see the following pages for other documents.

Design & Development

Switched Mode Power Supply Library

you can select and download various basic topologies of a power supply unit based on your actual requirements in order to verify the behavior of MOSFETs with your simulation environment.

Switched Mode Power Supply Library

Motor Control and Driver Circuit Library

you can select and download various basic topologies of motor driver such as three-phase inverter circuit based on your actual requirements in order to verify the behavior of MOSFETs and another devices for your simulation environment.

Motor Control and Driver Circuit Library

EDA/CAD Model Library

We provide simulation data, 3D models of packages, and land pattern models (2D models) used when developing product boards.

EDA/CAD Model Library

MCU Motor Studio

MCU Motor Studio features a PC Tool and motor control firmware dedicated to the TXZ+^TM Family Advanced Class microcontrollers from Toshiba.

MCU Motor Studio

Body Electronics

xEV

In-Vehicle Infotainment

Advanced Driver-Assistance Systems (ADAS)

Chassis

Infrastructure

BEMS/HEMS

Factory Automation

Commercial Equipment

IoT Equipment

Healthcare

Wearable Device

Mobile

Computer Peripherals

Home Applicances

SiC Power Devices

Photocouplers

Digital Isolators

Solid State Relays

Fiber Optic Transmitting Modules

Discrete Semiconductor

Diodes

Transistors

Logic ICs

Analog Devices

Digital Devices

Wireless Devices

RF Diodes

Overall block diagram

Sub block diagram

Solution Proposal

Documents

Design & Development

Contacts

Technical inquiry