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Photocouplers for 100 kbps communication: TLP2703

2015-08-19 | Return

Toshiba has launched “TLP2703”: a photocoupler for communication supporting 100 kbps signal transfer. This product has better is cost effective compared with 1 Mbps class IC photocouplers, and can be driven by a low input current of 1 mA level.

TLP2703 uses the 2.3 mm thick SO6L thin package, contributing to slimmer sets. As this product features creepage distance of 8 mm and isolation voltage of 5 kVrms despite its thin package, it is also suitable for applications requiring high insulation performance. In insulated interfaces of FA equipment such as PLC and inverters, or home appliances and housing equipment such as air conditioners and smart meters, communications are at various transmission rates from several kbps to tens of Mbps depending on the amount of information. Among such communications, in the rate range from several kbps to 100 kbps represented by RS-232C, no suitable photocoupler has been available. Therefore, users have selected general purpose transistor couplers that are not satisfactory in terms of performance, or 1 Mbps class IC couplers which are more expensive than transistor couplers.

TLP2703 is configured with a high output power infrared LED chip and a light receiving chip of high speed photodarlington transistor, and features high current transfer ratio (I_C/I_F) of 900 % (min) at an input current of 0.5 mA. As the guaranteed propagation delay is 25 μs (max) at an input current of I_F=1.6 mA, and 7 μs (max) at I_F=12 mA, this product is suitable for insulated communication interfaces up to around 100 kbps such as RS-232C.

Applications/ Outline Drawing

Applications

Smart meters
FA equipment
Home appliances equipment (air conditioner)
High-speed digital interfaces, such as measuring instruments and control devices
Photovoltaics
Power supplies

Outline drawing

Features

2.3 mm thin SO6L package
A clearance and creepage distance of 8 mm (min)
High current transfer ratio: I_C/I_F=900 % (min) @I_F=0.5 mA, V_CC=4.5 V
High temperature range: T_opr (max)=125 °C
Propagation delay time:
t_pHL=5 μs (max), t_pLH=25 μs (max) @I_F=1.6 mA, V_CC=5 V, R_L=2.2 kΩ, T_a=25 °C
t_pHL=1 μs (max), t_pLH=7 μs (max) @I_F=12 mA, V_CC=5 V, R_L=270 Ω, T_a=25 °C

Main Specifications

*1: New product
*2: Only TLP185 are t_pHL max → t_on typ.、t_pLH max → t_off typ.

Circuit Example

The illustration of curcuit example of photocouplers for 100 kbps communication: TLP2703.

The communication unit in this block diagram includes proposed communication standards for HAN and NAN.
Since different HAN and NAN communications are required for smart meters depending on the region, please choose and implement the appropriate communications for your region.

Contacts

If you have any queries, click one of these links:

Technical queries
- Inquiry sheet

Source：http://toshiba.semicon-storage.com