Key facts
- Brand
- STMicroelectronics
- Model
- STB80NF55
- Documents
- 3
- Languages
- EN
- Last added
- 2012-08-06
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AN1506 Application Note: Motor Drive System for Wheelchair Applications
The document presents an application note (AN1506) focusing on a new concept for designing low-voltage power MOSFETs suitable for high-current, low-voltage converter applications. It introduces a strip-based geometry that overcomes the limitations of traditional cell structures by offering simplified fabrication steps and enhanced device ruggedness.
The note specifically analyzes the STB80NF55 MOSFET as a candidate for an AC motor drive system used in wheelchairs. It details the static and dynamic behavior of the device, including on-state resistance, switching losses, and thermal characteristics within this specific application context.
STMicroelectronics STB80NF55 specifications
| Drain‑source Voltage (VDS) | 55 V |
|---|---|
| Continuous Drain Current (ID) at 25 °C | 80 A |
| Pulsed Drain Current (IDM) | 320 A |
| Total Power Dissipation (PD) | 300 W |
| Maximum Junction Temperature (Tj) | 175 °C |
Source: ST STB80NF55-06 STB80NF55-06-1 STP80NF55-06 STP80NF55-06FP handbook
All STMicroelectronics STB80NF55 documents by type
How to use the product for one specific task, with worked examples.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the main application described in this note?
The document describes a motor drive system specifically designed for wheelchair applications.
From: AN1506 Application Note: Motor Drive System for Wheelchair Applications
Which MOSFET device is used as the candidate for the AC drive application?
The STB80NF55 device was selected as the candidate for the actual application in an AC drive.
From: AN1506 Application Note: Motor Drive System for Wheelchair Applications
What is the maximum drain‑source voltage for the STB80NF55-06?
The device is rated for a maximum drain‑source voltage of 55 V.
From: ST STB80NF55-06 STB80NF55-06-1 STP80NF55-06 STP80NF55-06FP handbook
How much continuous drain current can the STB80NF55-06 handle at 25 °C?
It can conduct up to 80 A continuous drain current at 25 °C.
From: ST STB80NF55-06 STB80NF55-06-1 STP80NF55-06 STP80NF55-06FP handbook
What is the maximum continuous drain current at 25 °C?
The device can handle a continuous drain current of 80 A at 25 °C.
From: STMICROELECTRONICS STP80NF55-08 STB80NF55-08 STB80NF55-08-1 Manual
What is the typical on‑resistance of the MOSFET?
Typical on‑resistance is 0.0065 Ω.
From: STMICROELECTRONICS STP80NF55-08 STB80NF55-08 STB80NF55-08-1 Manual