Overview
The FSB50550BB is an advanced Motion SPM 5 module developed by onsemi. This module provides a fully-featured, high-performance inverter output stage designed for driving AC Induction, BLDC (Brushless DC), and PMSM (Permanent Magnet Synchronous) motors. It integrates optimized gate drive of the built-in MOSFETs using FRFET® technology to minimize EMI and losses. The module also includes multiple on-module protection features such as under-voltage lockouts and thermal monitoring.
Key Specifications
| Parameter | Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Drain-Source Voltage (VDSS) | - | - | - | 500 | V |
| Drain Current (ID), Continuous at TC = 25°C | - | - | - | 3.0 | A |
| Drain Current (ID), Continuous at TC = 80°C | - | - | - | 1.9 | A |
| Drain Current (IDP), Peak at TC = 25°C, PW < 100 μs | - | - | - | 7.0 | A |
| Control Supply Voltage (VDD) | Applied between VDD and COM | 13.5 | 15.0 | 18.5 | V |
| High-Side Bias Voltage (VBS) | Applied between VB and VS | 13.5 | 15.0 | 18.5 | V |
| Input Signal Voltage (VIN) | Applied between IN and COM | -0.3 | - | VDD + 0.3 | V |
| Isolation Voltage (VISO) | 60 Hz, Sinusoidal, 1 minute | - | - | 1500 | Vrms |
| Operating Junction Temperature (TJ) | - | -40 | - | 150 | °C |
| Storage Temperature (TSTG) | - | -40 | - | 125 | °C |
Key Features
- Optimized gate drive of built-in MOSFETs using FRFET® technology to minimize EMI and losses.
- 500 V, 3-phase inverter with gate drivers and protection.
- Built-in bootstrap diodes simplify PCB layout.
- Separate open-source pins from low-side MOSFETs for three-phase current-sensing.
- Active-HIGH interface, works with 3.3/5 V logic, Schmitt-trigger input.
- Optimized for low electromagnetic interference (EMI).
- HVIC temperature-sensing built-in for temperature monitoring.
- HVIC for gate driving and under-voltage protection.
- Isolation rating: 1500 Vrms/min.
- Pb-free and RoHS compliant.
Applications
The FSB50550BB is primarily used as a 3-phase inverter driver for small power AC motor drives, including AC Induction, BLDC, and PMSM motors.
Q & A
- What is the FSB50550BB module used for?
The FSB50550BB module is used as a 3-phase inverter driver for AC Induction, BLDC, and PMSM motors.
- What is the maximum drain-source voltage (VDSS) of the MOSFETs in the FSB50550BB?
The maximum drain-source voltage (VDSS) is 500 V.
- What is the continuous drain current (ID) at 25°C and 80°C?
The continuous drain current (ID) is 3.0 A at 25°C and 1.9 A at 80°C.
- What is the isolation voltage rating of the FSB50550BB?
The isolation voltage rating is 1500 Vrms/min.
- Is the FSB50550BB Pb-free and RoHS compliant?
Yes, the FSB50550BB is Pb-free and RoHS compliant.
- What are the recommended operating voltage ranges for VDD and VBS?
The recommended operating voltage ranges are 13.5 to 18.5 V for both VDD and VBS.
- How does the module protect against under-voltage conditions?
The module includes under-voltage protection for both low-side and high-side supplies, with detection and reset levels specified in the datasheet.
- What is the purpose of the built-in bootstrap diodes?
The built-in bootstrap diodes simplify the PCB layout and are part of the bootstrap circuit necessary for the high-side MOSFETs.
- What is the operating junction temperature range of the FSB50550BB?
The operating junction temperature range is -40°C to 150°C.
- How does the module optimize for low electromagnetic interference (EMI)?
The module is optimized for low EMI through the use of FRFET® technology and other design features.
