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TLP250

IGBT/MOSFET gate driver photocoupler, ±1.5A peak, 0.5µs delay, 2500Vrms isolation, DIP-8

4300

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Pieza del fabricante：

TLP250

Paquete：

DIP-8 (9.66 x 7.62 x 3.65 mm)

Marca：
Categorías de productos：
Compromiso de calidad
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Descripción

Productos

The TLP250 from Toshiba is a photocoupler gate driver consisting of a GaAlAs infrared LED and an integrated photo-detector with push-pull output, providing 2500Vrms isolation. With ±1.5A peak output current, 0.5µs propagation delay, and 10-35V supply range, it is designed for IGBT and power MOSFET gate driving in inverter and motor control applications.

Especificaciones

  • Input Threshold Current: 5 mA max (7-10 mA recommended)
  • Supply Voltage (VCC): 10V ~ 35V (up to 70°C), 24V (85°C)
  • Peak Output Current: ±1.5A (PW≤2.5µs, f≤15kHz)
  • Output Voltage: 35V max (70°C), 24V (85°C)
  • Propagation Delay: 0.15µs typical, 0.5µs max (tpLH/tpHL)
  • Supply Current: 11 mA max
  • Common Mode Transient Immunity: ±5000 V/µs min
  • Isolation Voltage: 2500Vrms (min, 60 seconds)
  • LED Forward Current: 20 mA max (continuous)
  • LED Reverse Voltage: 5V max
  • Operating Temperature: -20°C ~ 85°C
  • Operating Frequency: up to 25 kHz
  • Package: DIP-8 (through-hole)
  • Power Dissipation: 800 mW (detector)
  • Safety: UL 1577 recognized

Características

  • ±1.5A peak gate drive current for IGBT/MOSFET
  • 0.5µs maximum propagation delay for fast switching
  • 2500Vrms galvanic isolation for safety
  • Push-pull output for fast charge and discharge of gate capacitance
  • ±5000 V/µs common mode transient immunity
  • UL 1577 safety recognized
  • Wide 10-35V supply range for flexible gate drive voltage

Aplicaciones

  • IGBT gate drive in inverters and motor controls
  • Power MOSFET gate drive in SMPS
  • Industrial inverter for air conditioning
  • Induction heating power stages
  • Solar inverter IGBT driver

The TLP250 from Toshiba is an optically-isolated gate driver designed for IGBT and power MOSFET gate drive applications. It combines a GaAlAs infrared LED on the input side with an integrated photodetector and push-pull output stage on the output side, providing 2500Vrms electrical isolation between the control logic and the power stage. The ±1.5A peak output current is sufficient to directly drive medium-power IGBTs and MOSFETs up to approximately 600V/50A class without an external amplifier stage. The 0.5µs maximum propagation delay supports switching frequencies up to 25 kHz. The ±5000 V/µs common mode transient immunity ensures reliable operation in noisy inverter environments where high dv/dt switching transients are present. Note: This product has been announced EOL (End of Life) by Toshiba; TLP5772 or TLP5702 are recommended for new designs.

The TLP250 operates by converting an electrical input signal to light and back to an electrical output signal, providing galvanic isolation between input and output. When the input LED is forward-biased (IF > 5 mA threshold), it emits infrared light that is detected by the integrated photodetector on the output side. The photodetector includes a photo-diode and amplifier that drive the push-pull output stage. When the LED is on, the output stage sources current (VO = VCC) to charge the IGBT/MOSFET gate capacitance; when the LED is off, the output stage sinks current (VO = GND) to discharge the gate. The 0.1µF bypass capacitor between VCC (pin 8) and GND (pin 5) is mandatory for stable operation of the internal high-gain amplifier. The 2500Vrms isolation is achieved through the optically transparent but electrically insulating dielectric between the LED and the photodetector die within the DIP-8 package.

Pin Nombre Función
1 N.C. No connection
2 Ánodo LED anode (connect to drive signal through resistor)
3 Cátodo LED cathode (connect to drive signal return)
4 N.C. No connection
5 GND Output ground (connect to IGBT emitter)
6 VO Output (connect to IGBT gate through gate resistor)
7 VO Output (connected internally to pin 6)
8 VCC Output supply (10-35V, bypass with 0.1µF to pin 5)

The TLP250 is used as an isolated low-side gate driver in half-bridge and full-bridge inverter circuits for motor drives and induction heating. In air conditioner inverters, it drives the compressor IGBT module with galvanic isolation from the microcontroller. For solar inverters, the 2500Vrms isolation provides the required safety barrier between the high-voltage DC bus and the control electronics. In SMPS applications, it drives the primary-side MOSFET with isolation from the secondary-side PWM controller. The ±5000 V/µs CMTI prevents false turn-on of the output stage during high dv/dt switching transients common in inverter circuits.

Modelo Fabricante Diferencia clave
TLP5772 Toshiba Recommended replacement, different package
TLP5702 Toshiba Recommended replacement, similar specs
HCPL-3120 Broadcom 2.5A peak, 0.5µs, DIP-8 compatible
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