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IPM-Drive Photocouplers

img_ipm_01

Toshiba offers photocouplers ideal for isolated interfacing to an intelligent power module (IPM). IPM-drive photocouplers are available with an output in open-collector and inverting and noninverting totem-pole configurations. Therefore, you can find optimal photocouplers that best fit your needs, regardless of the input configuration (active level) of the driven IPM.

List of the Recommended IPM-Drive Photocouplers

Photocouplers with a maximum operating temperature (Topr) of 125°C

Clearance/Creepage Distance 8 mm 5 mm 7 or 8 mm* 7 or 8 mm* 4 mm
Date Rate
(Typ.)
Output Configuration

SO6L


SO6

SDIP6

DIP8

SO8

1 Mbps Open collector
TLP109(IGM) TLP719 TLP759(IGM)
Open collector
TLP2704 TLP104 TLP714 TLP754 TLP2404
5 Mbps Totempole
(Buffer logic type)
TLP2355 TLP715 TLP2955 TLP2405
Totempole
(Inverter logic type)
TLP2358 TLP718 TLP2958 TLP2408

sink/source input

TLP2395

TLP2398

10 Mbps Totempole
(Buffer logic type)
TLP2745 TLP2345
Totempole
(Inverter logic type)
TLP2748 TLP2348

* DIP8 and SDIP6 packages with clearance and creepage distances of 8 mm are available.
To order photocouplers in a package with guaranteed clearance and creepage distances of 8 mm, suffix the part number with the letter F. Example: TLP754F

Product List

List of IPM-Drive Photocouplers
You can search the entire list of IPM-drive photocouplers, based on characteristics.

Features of IPM-Drive Photocouplers

  • Interfaces with active-Low and active-High IPMs
  • Common-mode rejection (CMR) of 20 kV/µs
  • Fast switching with a propagation delay of 200 ns

1.Interfacing with active-Low and active-High IPMs

Commercially available IPMs have either an active-High control input (that turns on an internal IGBT when High) or an active-Low control input (that turns on an internal IGBT when Low). Toshiba offers IPM-drive photocouplers with a noninverting output (that produce a High output when the LED input is on) for active-High IPMs and those with an inverting output (that produce a Low output when the LED input is on) for active-Low IPMs. You can use photocouplers with an appropriate output configuration to adapt system boards for different IPMs without an intervening inverter IC. The elimination of an on-board inverter IC makes it possible to share the same board design across different products.

2. Guaranteed CMR of 20 kV/µs

Since the IPM control input changes with a steep dv/dt, the photocoupler that drives it typically requires a CMR higher than 10 kV/µs. The CMR of a photocoupler can be improved by adding a shield across its input and output and bypassing displacement current to ground.
To provide a CMR over 10 kV/µs, many of Toshiba's IPM-drive photocouplers have a shield for the photodetector chip. These photocouplers are ideal for interfacing to the IPM control signal. The TLP2355 and TLP2358 in particular provide a CMR as high as 20 kV/µs.

img_ipm_06_e

3. Propagation delay variations

Since IPM-drive photocouplers transfer a PWM signal, they must switch fast enough, generally with propagation delay times (tpHL/tpLH) of less than 800 ns. The TLP104 provides a propagation delay of 550 ns or less, while the TLP2358 has a propagation delay of 250 ns or less. Additionally, the TLP2358 guarantees a tpLH-tpHL difference of at most 70 ns and a propagation delay skew (between different devices), Tpsk, of at most ±130 ns. It helps improve the PWM signal transmission accuracy.

Other Photocouplers/Photorelays

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·Before creating and producing designs and using, customers must also refer to and comply with the latest versions of all relevant TOSHIBA information and the instructions for the application that Product will be used with or for.