How to Utilize the TLP250 Isolated MOSFET Driver?
OPTOISO 2.5KV 1CH GATE DRVR 8SMD
TLP250 is an isolated IGBT/Mosfet driver IC. This article mainly covers its pinout, datasheet, how to use TLP250 and more details about TLP250.

TLP250 Optocoupler Test Circuit, Pinout, How to Test TLP250 Optocoupler
TLP250 Pinout

TLP250 Pinout
PINS | Details |
1. NC | No Connection – Not used |
2. Anode | Anode terminal of LED diode |
3. Cathode | The cathode terminal of LED |
4. NC | .No Connection – Not used |
5. GND | Connect with Ground of power supply |
6. Vo | Output terminal |
7. Vo | Output terminal |
8. Vcc | Connect with Positive terminal of power supply |
What is TLP250?
TLP250 is suitable for the gate driving circuit of IGBT or power MOS FET. A GaAlAs light-emitting diode is used on the input side. An integrated photodetector provides a driving signal to the output side. As a result, electrical isolation between low and high power circuits is the most important aspect. It uses light to transmit electrical impulses.
It may be used to drive the gate terminal of high voltage switches in both high and low side drive configurations. It's packaged as an 8-pin DIP chip.
TLP250 Feature
• Input threshold current: 5mA(max)
• Supply current : 11mA(max)
• Supply voltage : 10-35V
• Output current : ±1.5A (max)
• Switching time tpLH/tpHL): 0.5μs(max)
• Isolation voltage: 2500Vrms(min)
• UL -recognized: UL 1577, File No.E67349
• cUL-recognized: CSA Component Acceptance Service No.5A File No.E67349
• VDE-Approved: EN 60747-5- 5 (Note 1)
TLP250 Application
Induction heating
Solar heating system
Solar inverters/ Power Inverter
Pure sine wave and modified sine wave inverters
Isolated MOSFET Driver Working
There are two stages in the TLP250: an input stage and an output stage. A power supply setup is also included. It is better for MOSFETs and IGBTs. This MOSFET driver is optically isolated, which sets it apart from other MOSFET drivers. Its electrical input and output sides are electrically insulated from one another. However, an optical signal is used to transport electrical signals between the two sides. It functions similarly to an optocoupler. A light-emitting diode is used in the input stage, while a photodiode is used in the output stage, The output gets high whenever the input stage LED light falls on the output stage photodetector diode.
TLP250 IGBT Driver as A Low Side Gate Driver
The low-side Mosfet driver circuit employing the TLP250 is illustrated below. The TLP250 is utilized as a non-inverting low-side Mosfet driver in this circuit layout. Between the power source and the electrolytic capacitor, a 0.47 uf electrolytic capacitor should be connected. It protects the TLP250 by giving a constant voltage to the IC.

Isolated MOSFET driver TLP250 as a Low Side Driver
Input is a driving signal that drives the output, as indicated in the diagram above. Signal ground is used to calculate Vin. It should be kept away from the supply and output grounds. The load ground is referenced to the power ground and is separated from the input signal reference ground, as indicated in the above figure TLP250. MOSFET Q1 receives a high signal from TLP250 when input is high, and it is powered by a power source, allowing current to flow through the load.
MOSFET Q1 receives a low signal from a TLP250 output pin when input is low, and Mosfet Q1 remains off and no current flows to the load. The supply voltage is typically between 10 -15 volts. Depending on the magnitude of the input signal, the input resistor at the gate of the MOSFET is employed. Typically, the input signal is given by a microcontroller, with a level of 5 volts for the microcontroller input signal. As a decoupling capacitor, capacitor C1 is employed.
TLP250 IGBT Driver as A a High Side MOSFET/IGBT Driver
The following is a circuit schematic for the TLP250 MOSFET /IGBT driver, which is utilized as a high side driver, It's a high-side gate drive circuit that isn't inverting. Because the input signal ground is linked to the input stage light-emitting diode's cathode. As a result, it's referred to as a non-inverting high-side gate driver.

TLP250 as a High Side MOSFET IGBT Driver
As illustrated in the diagram above, there are three grounds in a high side layout. The input signal's ground, the supply voltage's ground, and the power supply voltage's ground. When utilizing the TLP250 as a high-side MOSFET driver. keep in mind that all grounds should be separated from one another.
TLP250 Manufacturer
Toshiba Semiconductor & Storage provides a wide range of supporting technology solutions that enable OEMs, ODMs, CMs, and fabless semiconductor businesses to create innovative integrated products for industries such as computers, networking, communications, digital consumer, automotive, and others.
Specifications
- TypeParameter
- Factory Lead Time16 Weeks
- Mount
In electronic components, the term "Mount" typically refers to the method or process of physically attaching or fixing a component onto a circuit board or other electronic device. This can involve soldering, adhesive bonding, or other techniques to secure the component in place. The mounting process is crucial for ensuring proper electrical connections and mechanical stability within the electronic system. Different components may have specific mounting requirements based on their size, shape, and function, and manufacturers provide guidelines for proper mounting procedures to ensure optimal performance and reliability of the electronic device.
Surface Mount - Mounting Type
The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.
Surface Mount - Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
8-SMD, Gull Wing - Number of Pins8
- Operating Temperature
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.
-20°C~85°C - Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tape & Reel (TR) - Published2009
- Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Last Time Buy - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
1 (Unlimited) - Approval Agency
The parameter "Approval Agency" in electronic components refers to the organization responsible for testing and certifying that a component meets specific safety, quality, and performance standards. These agencies evaluate products to ensure compliance with industry regulations and standards, providing assurance to manufacturers and consumers. Approval from recognized agencies can enhance a component's marketability and acceptance in various applications, particularly in sectors like automotive, aerospace, and healthcare. Common approval agencies include Underwriters Laboratories (UL), International Electrotechnical Commission (IEC), and the American National Standards Institute (ANSI).
UR - Voltage - Isolation
Voltage - Isolation is a parameter in electronic components that refers to the maximum voltage that can be safely applied between two isolated points without causing electrical breakdown or leakage. It is a crucial specification for components such as transformers, optocouplers, and capacitors that require isolation to prevent electrical interference or safety hazards. The voltage isolation rating ensures that the component can withstand the specified voltage without compromising its performance or safety. It is typically measured in volts and is an important consideration when designing circuits that require isolation between different parts of the system.
2500Vrms - Max Output Current
The maximum current that can be supplied to the load.
1.5A - Number of Channels1
- Voltage - Forward (Vf) (Typ)
The parameter "Voltage - Forward (Vf) (Typ)" in electronic components refers to the typical forward voltage drop across the component when it is conducting current in the forward direction. It is a crucial characteristic of components like diodes and LEDs, indicating the minimum voltage required for the component to start conducting current. The forward voltage drop is typically specified as a typical value because it can vary slightly based on factors such as temperature and manufacturing tolerances. Designers use this parameter to ensure that the component operates within its specified voltage range and to calculate power dissipation in the component.
1.6V - Propagation Delay
the flight time of packets over the transmission link and is limited by the speed of light.
500 ns - Turn On Delay Time
Turn-on delay, td(on), is the time taken to charge the input capacitance of the device before drain current conduction can start.
500 ns - Forward Current
Current which flows upon application of forward voltage.
10mA - Direction
In electronic components, the parameter "Direction" refers to the orientation or alignment in which the component is designed to operate effectively. This parameter is particularly important for components such as diodes, transistors, and capacitors, which have specific polarity or orientation requirements for proper functionality. For example, diodes allow current flow in one direction only, so their direction parameter indicates the correct orientation for current flow. Similarly, polarized capacitors have a positive and negative terminal, requiring proper alignment for correct operation. Understanding and adhering to the direction parameter is crucial for ensuring the reliable and efficient performance of electronic components in a circuit.
Unidirectional - Output Current per Channel
Output Current per Channel is a specification commonly found in electronic components such as amplifiers, audio interfaces, and power supplies. It refers to the maximum amount of electrical current that can be delivered by each individual output channel of the component. This parameter is important because it determines the capacity of the component to drive connected devices or loads. A higher output current per channel means the component can deliver more power to connected devices, while a lower output current may limit the performance or functionality of the component in certain applications. It is crucial to consider the output current per channel when selecting electronic components to ensure they can meet the power requirements of the intended system or setup.
1.5A - Current - DC Forward (If) (Max)
The parameter "Current - DC Forward (If) (Max)" in electronic components refers to the maximum forward current that can safely pass through the component without causing damage. This parameter is typically specified in datasheets for diodes and LEDs, indicating the maximum current that can flow through the component in the forward direction. Exceeding this maximum current rating can lead to overheating and potentially permanent damage to the component. It is important to ensure that the current flowing through the component does not exceed this specified maximum to maintain proper functionality and reliability.
20mA - Propagation Delay tpLH / tpHL (Max)
Propagation delay tpLH and tpHL refer to the time it takes for a digital signal to travel through a logic gate or other electronic component. tpLH is the maximum time delay for the output to transition from a low state to a high state, while tpHL is the maximum time delay for the output to transition from a high state to a low state. These parameters are critical for determining the speed and timing performance of digital circuits, as they impact how quickly signals can propagate through the system and affect overall operation.
500ns, 500ns - Common Mode Transient Immunity (Min)
Common Mode Transient Immunity (Min) is a parameter that measures the ability of an electronic component to withstand and reject common mode noise or interference signals. Common mode noise refers to unwanted signals that are present on both input and output lines of a component. The minimum value of Common Mode Transient Immunity indicates the minimum level of noise or interference that the component can tolerate without affecting its performance. A higher Common Mode Transient Immunity value signifies better protection against common mode noise, ensuring reliable operation of the component in noisy environments. It is an important specification to consider when designing circuits that are exposed to external disturbances or electromagnetic interference.
5kV/μs - Reverse Voltage (DC)
Reverse Voltage (DC) refers to the maximum voltage that an electronic component, typically a semiconductor device like a diode, can withstand in the reverse direction without undergoing breakdown or failure. It indicates the threshold at which the device will start to conduct in reverse, potentially damaging the component. This parameter is crucial for ensuring the reliability and safety of circuits that may experience reverse polarity or unexpected voltage conditions. Exceeding the specified reverse voltage can lead to permanent damage or catastrophic failure of the component.
5V - Voltage - Output Supply
Voltage - Output Supply is a parameter in electronic components that refers to the voltage level required to power the device and provide the necessary output. It specifies the voltage range within which the component can operate effectively and safely. This parameter is crucial for ensuring proper functionality and performance of the electronic component. It is important to match the output supply voltage with the specified requirements to prevent damage to the component and ensure reliable operation.
15V~30V - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
RoHS Compliant - Lead Free
Lead Free is a term used to describe electronic components that do not contain lead as part of their composition. Lead is a toxic material that can have harmful effects on human health and the environment, so the electronics industry has been moving towards lead-free components to reduce these risks. Lead-free components are typically made using alternative materials such as silver, copper, and tin. Manufacturers must comply with regulations such as the Restriction of Hazardous Substances (RoHS) directive to ensure that their products are lead-free and environmentally friendly.
Lead Free
Datasheet PDF
- Datasheets :
Trend Analysi
What is suitable for the gate driving circuit of IGBT or power MOS FET?
TLP250.
What is the most important aspect of TLP250?
Electrical isolation between low and high power circuits.
What can TLP250 be used to do?
To drive the gate terminal of high voltage switches in both high and low side drive configurations
What type of chip is TLP250 packaged as?
8-pin DIP chip.
What are the two stages in the TLP250?
Input stage and an output stage.
What is included in the TLP250?
Power supply setup.
What type of optical signal does the TLP250 function similar to?
Optocoupler.
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