---
page_id: wsd-high-voltage-10v-in-gf180-a7fe2033
type: context-page
schema_version: 1
template_id: discord-page
template_version: template-0.1.0
title: "Thread: High voltage (10V) in gf180"
slug: wsd-high-voltage-10v-in-gf180-a7fe2033
route: /evidence/i-information/general/threads/high-voltage-10v-in-gf180
section: reference
access: public
summary: 10 Discord messages from ℹ️ - Information/general/threads/high-voltage-10v-in-gf180.md.
status: published
asset_base: .
home_href: /
md_url: /evidence/i-information/general/threads/high-voltage-10v-in-gf180.md
toc_enabled: true
talk_enabled: false
agent_view_enabled: true
copy_buttons_enabled: true
footer_enabled: true
search_indexed: true
tags: [discord, wafer-space, archive]
last_updated: 2026-08-19
talk_url: /evidence/i-information/general/threads/high-voltage-10v-in-gf180.talk.md
talk_route: /evidence/i-information/general/threads/high-voltage-10v-in-gf180/talk
---
# Thread: High voltage (10V) in gf180
Category: **ℹ️ - Information**
Parent channel: **#general**
Thread ID: `1504730665705537729`
Messages: **10**
## message-1504736830954799104
**2026-05-15T06:46:57.158+00:00 — Vipul (@vipul.sh)**
- Message ID: `1504736830954799104`
- Author ID: `1214459146217201704`
- Nickname: Vipul
- User name: vipul.sh
- Type: `21`
- Discord message: https://discord.com/channels/1361349522684510449/1504730665705537729/1504736830954799104
- Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/Voice%20Channels/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
**Reply/reference**
- https://discord.com/channels/1361349522684510449/1361349523724570941/1504730665705537729
Reference data
```json
{
"channelId": "1361349523724570941",
"guildId": "1361349522684510449",
"messageId": "1504730665705537729"
}
```
**Content**
```text
```
Other message metadata
```json
{
"author": {
"avatarUrl": "2026-05_media/4-4551A.png",
"discriminator": "0000",
"isBot": false
},
"message": {
"mentions": [
{
"avatarUrl": "2026-05_media/3c7c17f3225f6e56f4dccd83f14383f2-73F83.png",
"color": null,
"discriminator": "0000",
"id": "323371864074485771",
"isBot": false,
"name": "mole99",
"nickname": "Leo Moser (mole99)",
"roles": [
{
"color": null,
"id": "1423020172595298314",
"name": "Mod",
"position": 4
}
]
}
]
}
}
```
---
## message-1504736837195796580
**2026-05-15T06:46:58.646+00:00 — Vipul (@vipul.sh)**
- Message ID: `1504736837195796580`
- Author ID: `1214459146217201704`
- Nickname: Vipul
- User name: vipul.sh
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1504730665705537729/1504736837195796580
- Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/Voice%20Channels/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
**Content**
```text
Thanks @Leo Moser (mole99) for your reply. It would be helpful if can get confirmation or any limitations wrt use of 10V devices from pdk in designs. Are IO pads available for supporting high voltage.
```
Other message metadata
```json
{
"author": {
"avatarUrl": "2026-05_media/4-4551A.png",
"discriminator": "0000",
"isBot": false
},
"message": {
"mentions": [
{
"avatarUrl": "2026-05_media/3c7c17f3225f6e56f4dccd83f14383f2-73F83.png",
"color": null,
"discriminator": "0000",
"id": "323371864074485771",
"isBot": false,
"name": "mole99",
"nickname": "Leo Moser (mole99)",
"roles": [
{
"color": null,
"id": "1423020172595298314",
"name": "Mod",
"position": 4
}
]
}
]
}
}
```
---
## message-1504746901742813194
**2026-05-15T07:26:58.221+00:00 — tnt (@246tnt)**
- Message ID: `1504746901742813194`
- Author ID: `596068704471482370`
- Nickname: tnt
- User name: 246tnt
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1504730665705537729/1504746901742813194
- Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/Voice%20Channels/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
**Content**
```text
No . All io pads have esd diodes that wouldn't handle that.
```
Other message metadata
```json
{
"author": {
"avatarUrl": "2026-05_media/88d17af9d19ab43565b0c46751ef7d12-DFEE5.png",
"discriminator": "0000",
"isBot": false
},
"message": {}
}
```
---
## message-1504746983993114716
**2026-05-15T07:27:17.831+00:00 — tnt (@246tnt)**
- Message ID: `1504746983993114716`
- Author ID: `596068704471482370`
- Nickname: tnt
- User name: 246tnt
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1504730665705537729/1504746983993114716
- Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/Voice%20Channels/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
**Content**
```text
You will need to design your own AFAICT
```
Other message metadata
```json
{
"author": {
"avatarUrl": "2026-05_media/88d17af9d19ab43565b0c46751ef7d12-DFEE5.png",
"discriminator": "0000",
"isBot": false
},
"message": {}
}
```
---
## message-1504748857139925022
**2026-05-15T07:34:44.424+00:00 — Vipul (@vipul.sh)**
- Message ID: `1504748857139925022`
- Author ID: `1214459146217201704`
- Nickname: Vipul
- User name: vipul.sh
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1504730665705537729/1504748857139925022
- Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/Voice%20Channels/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
**Content**
```text
So, existing pads support only upto 5V/6V; for 10V need to design custom IO pads. Is that correct ?
```
Other message metadata
```json
{
"author": {
"avatarUrl": "2026-05_media/4-4551A.png",
"discriminator": "0000",
"isBot": false
},
"message": {}
}
```
---
## message-1504760678072848494
**2026-05-15T08:21:42.754+00:00 — tnt (@246tnt)**
- Message ID: `1504760678072848494`
- Author ID: `596068704471482370`
- Nickname: tnt
- User name: 246tnt
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1504730665705537729/1504760678072848494
- Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/Voice%20Channels/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
**Content**
```text
That's what it looks like to me yes.
```
Other message metadata
```json
{
"author": {
"avatarUrl": "2026-05_media/88d17af9d19ab43565b0c46751ef7d12-DFEE5.png",
"discriminator": "0000",
"isBot": false
},
"message": {}
}
```
---
## message-1504817231660580916
**2026-05-15T12:06:26.18+00:00 — namibj**
- Message ID: `1504817231660580916`
- Author ID: `262706220073222144`
- Nickname: namibj
- User name: namibj
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1504730665705537729/1504817231660580916
- Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/Voice%20Channels/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
**Content**
```text
@Vipul any particular plans for them?
**I'd like to help validate** in preparation for X.
I'd be looking forward to designing X some time next year.
I'd expect usage of ldmos for local voltage regulation, perhaps in a mode of modulating whether or not a capacitive transformer/divider siphoning off the local power switch's drain voltage cycling gets to top off a local storage capacitor (off of which it would run an LDO or maybe even buck to provide 3.3V core and 5V output gate drive supply) or is just shorted out for the upcoming turn-off-transient; it'd have to also provide diode-action off the ldmos drain potential (as anode) to the local buffer capacitor (of which it'd e.g. LDO the 5V output gate drive "PA" and the 3.3V core supply; as cathode) especially during startup/power-on-reset.
Probably; though it may end up using a separate supply regulating switch for that (EPC2106 perhaps, if there's a way to make a floating 5V CMOS output that can be ground-lifted those 5~10V).
X:
the isolated digital-predistortion-enabled gate driver for GaN (e.g. EPC2207) switched-capacitor converters (operating at considerably higher system voltages through operating the switches in series with _very_ careful control as they're not said to be avalanche-proof (||exceeding the drain-source breakdown voltage with gate-source voltage being the recommended off-state 0V would typically result in physical damage, AFAIK||), by using fiber optics to provide isolation against sharp dV/dT for a central brain to coordinate a fleet of the drivers, each with a couple switching dies local to it that are in parallel and sufficiently monitored).
```
Other message metadata
```json
{
"author": {
"avatarUrl": "2026-05_media/f885abc0dddd0a33e4d4991b3c99091d-7ACD2.png",
"discriminator": "0000",
"isBot": false
},
"message": {
"mentions": [
{
"avatarUrl": "2026-05_media/4-4551A.png",
"color": null,
"discriminator": "0000",
"id": "1214459146217201704",
"isBot": false,
"name": "vipul.sh",
"nickname": "Vipul",
"roles": []
}
]
}
}
```
---
## message-1504821075341606953
**2026-05-15T12:21:42.585+00:00 — Vipul (@vipul.sh)**
- Message ID: `1504821075341606953`
- Author ID: `1214459146217201704`
- Nickname: Vipul
- User name: vipul.sh
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1504730665705537729/1504821075341606953
- Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/Voice%20Channels/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
**Content**
```text
@namibj What I understand from your requirements is that you plan to design some kind of gate driver circuit for driving a GaN based switch. Please correct me if I am wrong. I don’t have much knowledge about GaN electronics, but do see potential applications of 10V ldmos in some types of battery management designs. Would be glad to explore this further, provided it’s feasible in gf180.
```
Other message metadata
```json
{
"author": {
"avatarUrl": "2026-05_media/4-4551A.png",
"discriminator": "0000",
"isBot": false
},
"message": {
"mentions": [
{
"avatarUrl": "2026-05_media/f885abc0dddd0a33e4d4991b3c99091d-7ACD2.png",
"color": null,
"discriminator": "0000",
"id": "262706220073222144",
"isBot": false,
"name": "namibj",
"nickname": "namibj",
"roles": []
}
]
}
}
```
---
## message-1504856163588771931
**2026-05-15T14:41:08.275+00:00 — namibj**
- Message ID: `1504856163588771931`
- Author ID: `262706220073222144`
- Nickname: namibj
- User name: namibj
- Type: `Reply`
- Discord message: https://discord.com/channels/1361349522684510449/1504730665705537729/1504856163588771931
- Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/Voice%20Channels/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
**Reply/reference**
- https://discord.com/channels/1361349522684510449/1504730665705537729/1504821075341606953
Reference data
```json
{
"channelId": "1504730665705537729",
"guildId": "1361349522684510449",
"messageId": "1504821075341606953"
}
```
**Content**
```text
No yeah that's about it.
The complication comes from it not doing it the classic hard switched CMOS output stage way but rather with a class B output "PA" stage (technically an "independently" driven push/pull pair aka half-bridge is what drives the GaN gate, probably via a bit of impedance matching to recycle a decent chunk of the gate charge) fed from a pair of DACs that control the push and pull output driver individually as those will have limited speed and it's trying to reduce overall losses while staying coordinated across multiple GaN that are wired in series for more blocking voltage (if they do any hard switching it has to be synchronized or one catches excess voltage and blows discharge damage in it's channel! At least AFAIK these GaN are not avalanche-proof.).
All the GaN you'd need to know to understand is just this "n-channel logic level mosfet" datasheet; I'd probably aim to use 120~150 normally and up to 180 non-repetitive (in fault containment) of the 200 V drain voltage.
Note the total gate charge, gate-source charge, gate-drain charge, gate resistance, (if needed compute equivalent total gate-source capacitance from assuming total gate charge goes just to the source and then using the 5V gate-source voltage to turn the charge into a capacitance; for an RC time constant), and look how fast that 23(typ) 35 (max) nC output charge (@100V) charges from e.g. say 20A that should be feasible from the limited 25~35% effective duty cycle in the switching topologies I'm eyeing.
https://epc-co.com/epc/portals/0/epc/documents/datasheets/EPC2207_datasheet.pdf
E.g. about 2.3ns until drain full, 900 pF charge-equivalent input capacitance, 270ps RC time constant of the gate based off of that charge-equivalent capacitance and the gate resistance, 5+-0.5V gate-on target, 0V(+-0.5 if needed) (clamped) gate-off target, etc.
```
Other message metadata
```json
{
"author": {
"avatarUrl": "2026-05_media/f885abc0dddd0a33e4d4991b3c99091d-7ACD2.png",
"discriminator": "0000",
"isBot": false
},
"message": {
"mentions": [
{
"avatarUrl": "2026-05_media/4-4551A.png",
"color": null,
"discriminator": "0000",
"id": "1214459146217201704",
"isBot": false,
"name": "vipul.sh",
"nickname": "Vipul",
"roles": []
}
]
}
}
```
---
## message-1504856316194066522
**2026-05-15T14:41:44.659+00:00 — namibj**
- Message ID: `1504856316194066522`
- Author ID: `262706220073222144`
- Nickname: namibj
- User name: namibj
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1504730665705537729/1504856316194066522
- Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
- Archive source: https://discord.wafer.space/wafer-space/Voice%20Channels/general/high-voltage-10v-in-gf180/2026-05/2026-05.json
**Content**
```text
I can explain differently later if needed/wanted.
```
Other message metadata
```json
{
"author": {
"avatarUrl": "2026-05_media/f885abc0dddd0a33e4d4991b3c99091d-7ACD2.png",
"discriminator": "0000",
"isBot": false
},
"message": {}
}
```
---