tomizett
Active Member
Hi All,
This is a long shot, but I wondered if anyone had any advice to offer on this.
I have a UPS (uninterruptible power supply) to repair and, as part of this repair, I need to replace the inverter IGBTs at the output. The inverter is a true sinewave type using a high-frequency half bridge, pulse-width modulated (it is not a modified sinewave type with a low frequency iron cored transformer).
The original parts are AP30G120ASW from Advanced Power Electronics, see
https://pdf1.alldatasheet.com/datasheet-pdf/view/509369/A-POWER/AP30G120ASW.html
however these are unavailable in the UK, so I'm trying to find a replacement.
I've searched through some datasheets, but notice that a lot of the devices of the same current/voltage specifications are described as "optimised for soft switching applications" and are substantially slower/have higher gate charge. This is my main concern, as the switching frequency and dead time are unknown to me.
My questions are:
1. Does anyone know where in the UK I might be able to source this transistor (AP30G120ASW) directly?
2. Can anyone recommend a drop-in replacement for this device in an inverter application?
3. Does anyone have general advice on selecting a replacement? Are there any pitfalls I should be wary of?
Our records show that I've previously repaired a similar UPS (an older model from the same manufacturer) using the HGTG18N120BND, although I'm not sure (my notes don't say) if that was the original device or a substitution. See datasheet here:
https://pdf1.alldatasheet.com/datasheet-pdf/view/52765/FAIRCHILD/HGTG18N120BN.html
4. Does anyone have any comments on the suitability of the HGTG18N120BND as a direct replacement for the AP30G120ASW?
Thanks in advance,
Tom.
This is a long shot, but I wondered if anyone had any advice to offer on this.
I have a UPS (uninterruptible power supply) to repair and, as part of this repair, I need to replace the inverter IGBTs at the output. The inverter is a true sinewave type using a high-frequency half bridge, pulse-width modulated (it is not a modified sinewave type with a low frequency iron cored transformer).
The original parts are AP30G120ASW from Advanced Power Electronics, see
https://pdf1.alldatasheet.com/datasheet-pdf/view/509369/A-POWER/AP30G120ASW.html
however these are unavailable in the UK, so I'm trying to find a replacement.
I've searched through some datasheets, but notice that a lot of the devices of the same current/voltage specifications are described as "optimised for soft switching applications" and are substantially slower/have higher gate charge. This is my main concern, as the switching frequency and dead time are unknown to me.
My questions are:
1. Does anyone know where in the UK I might be able to source this transistor (AP30G120ASW) directly?
2. Can anyone recommend a drop-in replacement for this device in an inverter application?
3. Does anyone have general advice on selecting a replacement? Are there any pitfalls I should be wary of?
Our records show that I've previously repaired a similar UPS (an older model from the same manufacturer) using the HGTG18N120BND, although I'm not sure (my notes don't say) if that was the original device or a substitution. See datasheet here:
https://pdf1.alldatasheet.com/datasheet-pdf/view/52765/FAIRCHILD/HGTG18N120BN.html
4. Does anyone have any comments on the suitability of the HGTG18N120BND as a direct replacement for the AP30G120ASW?
Thanks in advance,
Tom.