HV450 / Supertex, Inc - Datasheet(PDF) Chat AI

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Part No.	HV450
Manufacturer	SUTEX
Size	84 Kbytes
Pages	4 pages
Description	High-Voltage Ring Generator

Datasheet Summary with AI

1. Overview:

️· Function: The HV450 drives both P-channel and N-channel MOSFETs for high-voltage applications. It's designed to create sine wave ring outputs (like in resonant converters).
️· Key Features: Includes linear regulators for gate drive voltage generation, pulse-by-pulse overcurrent sensing, and logic control inputs for switching.

2. Block Diagram:

*(Not provided in the text, but described as existing in the full document)* Likely shows the internal architecture with linear regulators, gate drivers, logic control, and sensing circuits.

3. Pin Description:

️· Power Supplies:
- `VPP`: P-channel gate voltage supply (internal linear regulator).
- `VNN1`: Negative high-voltage supply.
- `VNN2`: N-channel gate voltage supply (internal linear regulator).
- `VDD`: Logic supply voltage.
- `GND`: Low-voltage ground.
- `PGND`: High-voltage power ground.
️· Control Inputs:
- `PIN`: Logic control input (turns OFF high-side P-channel MOSFET when high).
- `NIN`: Logic control input (turns ON high-side N-channel MOSFET when high).
- `EN`: Enable input (low enables IC).
- `Mode`: Mode input (controls deadband timing).
️· Outputs & Sensing:
- `HVOUT`: High-voltage output (swings between `PGND` and `VNN1`).
- `Vpsen`: P-channel overcurrent sensing.
- `Vnsen`: N-channel overcurrent sensing.
- `Pgate`: Gate drive output for external P-channel MOSFET.
- `Ngate`: Gate drive output for external N-channel MOSFET.

4. Typical Application Circuit:

*(Not fully described, but shown as a diagram.)* The application is a sine wave ring output, likely for a resonant power converter. It includes a 0.22µF capacitor.

5. Important Notes/Cautions:

️· The datasheet emphasizes avoiding a certain state where `NIN` is high and the `Mode` input is low. This condition will short `VNN1` to `PGND` and should be avoided for safety and circuit integrity.

6. Company Information:

️· Supertex Inc. (website: [www.supertex.com](http://www.supertex.com))
️· Contact information (address, phone, fax).

In essence, the HV450 is a specialized gate driver designed for high-voltage, resonant power applications. It provides regulated gate drive voltages, overcurrent protection, and flexible logic control for driving high-side and low-side MOSFETs.