Toshiba Releases Automotive Standard Digital Isolators Compliant with AEC-Q100
February 27, 2025
Toshiba Electronic Devices & Storage Corporation
KAWASAKI, Japan—Toshiba Electronic Devices & Storage Corporation ("Toshiba") has launched its first lineup of 4-channel high-speed standard digital isolators for automotive applications. The new "DCM34xx01 Series” features 10 devices that support stable operation with high common-mode transient immunity (CMTI) of 100kV/μs (typ.)[1] and high data transmission rate of 50Mbps (max)[2]. All conform to the AEC-Q100 standard on the safety and reliability of automotive electronic components. Shipments start today.
Ensuring the safety and reliability of the on-board chargers (OBC) and battery management systems (BMS) used in hybrid-electric vehicles (HEV) and electric vehicles (EV) requires devices that ensure isolation and prevent noise-propagation. Automotive standard digital isolators provide solutions for the multi-channel high-speed communications and high CMTI these isolation devices require.
The new isolators use Toshiba's proprietary magnetic coupling type isolated transmission method to achieve a high CMTI of 100kV/μs (typ.). This delivers high level resistance to electric noise between input and output in isolated signal transmission, enables stable control signal transmission and contributes to stable equipment operation. In addition, a low-pulse-width distortion of 0.8ns (typ.)[2] and a data-transmission rate of 50Mbps (max) are also achieved. The new products are suitable for multi-channel high-speed communication applications such as I/O interfaces with SPI communications.
Toshiba has already started mass production of Industrial standard digital isolators , and has now extended its product lineup to automotive equipment. Going forward, the company will increase the lineup of packages and number of channels in both areas. It will continue to provide high-quality isolation devices and photocouplers, that support the reliability and real-time data transmission required by automotive equipment.
Notes:
[1] Test conditions: VDD1=VDD2=4.5 to 5.5V, VCM=1500V, Topr=-40 to 125°C
[2] Test conditions: VDD1=VDD2=4.5 to 5.5V, Topr=-40 to 125°C
Applications
Automotive equipment
- Battery management system (BMS)
- Automotive On-board Charger (OBC)
- Inverter control
Features
- High common mode transient immunity: CMTI=100kV/μs (typ.)[1]
- High-speed data rate: tbps =50Mbps (max)[2]
- Low pulse width distortion: PWD=0.8ns (typ.)
- Quad-channel support (see Main Specifications for details on each device):
Four forward channels and no reverse channels; three forward channels and one reverse channel; two forward channels and two reverse channels
Main Specifications
(Unless otherwise specified, Topr=-40 to 125°C)
| Part number | DCM341L01 | DCM341H01 | DCM341A01 | DCM341B01 | |||
|---|---|---|---|---|---|---|---|
| Number of channels (Forward directions : reverse directions) |
4 (3:1) |
||||||
| Default output logic | Low | High | Low | High | |||
| Input/output control | Output Enable | Input Disable | |||||
| Package | SOIC16-W | ||||||
| Absolute maximum ratings |
Operating temperature Topr (°C) | -40 to 125 | |||||
| Storage temperature Tstg (°C) | -65 to 150 | ||||||
| Isolation voltage BVS (Vrms) |
t=1min, Ta=25°C |
Min | 5000 | ||||
| Electrical characteristics |
Common mode transient immunity CMTI (kV/μs) |
VDD1=VDD2= 4.5 to 5.5V, VCM=1500V |
Typ. | 100 | |||
| Data rate tbps (Mbps) |
VDD1=VDD2= 4.5 to 5.5V |
Max | 50 | ||||
| Pulse width distortion PWD (ns) |
Typ. | 0.8 | |||||
| Propagation delay tPHL, tPLH (ns) |
10.9 | ||||||
| Sample Check & Availability |  |
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(Unless otherwise specified, Topr=-40 to 125°C)
| Part number | DCM340C01 | DCM340D01 | DCM340L01 | DCM340H01 | |||
|---|---|---|---|---|---|---|---|
| Number of channels (Forward directions : reverse directions) |
4 (4:0) |
||||||
| Default output logic | Low | High | Low | High | |||
| Input/output control | None | Output Enable | |||||
| Package | SOIC16-W | ||||||
| Absolute maximum ratings |
Operating temperature Topr (°C) | -40 to 125 | |||||
| Storage temperature Tstg (°C) | -65 to 150 | ||||||
| Isolation voltage BVS (Vrms) |
t=1min, Ta=25°C |
Min | 5000 | ||||
| Electrical characteristics |
Common mode transient immunity CMTI (kV/μs) |
VDD1=VDD2= 4.5 to 5.5V, VCM=1500V |
Typ. | 100 | |||
| Data rate tbps (Mbps) |
VDD1=VDD2= 4.5 to 5.5V |
Max | 50 | ||||
| Pulse width distortion PWD (ns) |
Typ. | 0.8 | |||||
| Propagation delay tPHL, tPLH (ns) |
10.9 | ||||||
| Sample Check & Availability | |
|
|
|
|||
(Unless otherwise specified, Topr=-40 to 125°C)
| Part number | DCM342L01 | DCM342H01 | |||
|---|---|---|---|---|---|
| Number of channels (Forward directions : reverse directions) |
4 (2:2) |
||||
| Default output logic | Low | High | |||
| Input/output control | Output Enable | ||||
| Package | SOIC16-W | ||||
| Absolute maximum ratings |
Operating temperature Topr (°C) | -40 to 125 | |||
| Storage temperature Tstg (°C) | -65 to 150 | ||||
| Isolation voltage BVS (Vrms) |
t=1min, Ta=25°C |
Min | 5000 | ||
| Electrical characteristics |
Common mode transient immunity CMTI (kV/μs) |
VDD1=VDD2= 4.5 to 5.5V, VCM=1500V |
Typ. | 100 | |
| Data rate tbps (Mbps) |
VDD1=VDD2= 4.5 to 5.5V |
Max | 50 | ||
| Pulse width distortion PWD (ns) |
Typ. | 0.8 | |||
| Propagation delay tPHL, tPLH (ns) |
10.9 | ||||
| Sample Check & Availability | |
|
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Related information
Application Notes
- Basics of the standard digital isolators (PDF: 968KB)
- Digital Isolator EMC Application Notes (PDF: 3.3MB)
- Glossary of Standard Digital Isolator terms (PDF: 528KB)
Follow the link below for more on Toshiba’s standard digital isolators.
Standard Digital Isolators
To check availability of the new products at online distributors, visit:
DCM341L01
DCM341H01
DCM341A01
DCM341B01
DCM340C01
DCM340D01
DCM340L01
DCM340H01
DCM342L01
DCM342H01
Customer Inquiries:
Optoelectronic Device Sales & Marketing Dept.
Tel: +81-44-548-2218
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