Isolated USB Repeater – USB2.0
The project presented here is a USB port-powered, USB 2.0 isolator that isolates the USB host and USB device. It is a galvanically-isolated USB2.0 repeater, that supports low speed 1.5Mbps, and full speed 12Mbps communication. The project automatically connects and detects the bus speed. This USB 2.0 isolator is efficiently powered from the USB port and requires no external power, on board isolated DC-DC converter U1 provides 5V to the other side of the circuitry and USB port. U2 LDO provides 3.3V to the chip. L1 and L2 ferrite beads take care of noise immunity on the DC bus. The project protects the host USB port from noise and high voltage.
Features
- Compliant to USB 2.0
- Supports low speed (1.5 Mbps) and full speed (12 Mbps) signaling
- Automatic speed and connection detection
- Supports L1 (sleep) and L2 (suspend) low-power states
- Supports automatic role reversal for USB On-The-Go (OTG) and Type-C® Dual Role Port (DRP) designs
- VBUS voltage range: 4.25 V to 5.5 V (Power Supply from USB Port)
- Meets CISPR32 class B emissions limits
- Ambient temperature range: –40°C to +125°C
- Safety-related certifications:
- 7071-VPK VIOTM and 2121-VPK VIORM (Reinforced) per DIN EN IEC 60747-17 (VDE 0884-17)
- 5000-VRMS isolation for 1 minute per UL 1577
- IEC 62368-1, IEC 60601-1 and IEC 61010-1 certifications
- CQC, TUV, and CSA certifications
- PCB Dimensions 44.77 x 25.72 mm
Features of DC-DC Converter
- Continuous short-circuit protection
- Input 5V DC
- Output 5V DC
- Maximum Load Current 400mA
- No-load input current as low as 8mA
- Operating ambient temperature range: -40℃to +105℃
- High efficiency up to 86%
- High power density
- I/O isolation test voltage1.5kVDC
Video
https://www.youtube.com/watch?v=Kurc3FrInjY
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The project presented here is a USB port-powered, USB 2.0 isolator that isolates the USB host and USB device. It is a galvanically-isolated USB2.0 repeater, that supports low speed 1.5Mbps, and full speed 12Mbps communication. The project automatically connects and detects the bus speed. This USB 2.0 isolator is efficiently powered from the USB port and requires no external power, on board isolated DC-DC converter U1 provides 5V to the other side of the circuitry and USB port. U2 LDO provides 3.3V to the chip. L1 and L2 ferrite beads take care of noise immunity on the DC bus. The project protects the host USB port from noise and high voltage.
Features
- Compliant to USB 2.0
- Supports low speed (1.5 Mbps) and full speed (12 Mbps) signaling
- Automatic speed and connection detection
- Supports L1 (sleep) and L2 (suspend) low-power states
- Supports automatic role reversal for USB On-The-Go (OTG) and Type-C® Dual Role Port (DRP) designs
- VBUS voltage range: 4.25 V to 5.5 V (Power Supply from USB Port)
- Meets CISPR32 class B emissions limits
- Ambient temperature range: –40°C to +125°C
- Safety-related certifications:
- 7071-VPK VIOTM and 2121-VPK VIORM (Reinforced) per DIN EN IEC 60747-17 (VDE 0884-17)
- 5000-VRMS isolation for 1 minute per UL 1577
- IEC 62368-1, IEC 60601-1 and IEC 61010-1 certifications
- CQC, TUV, and CSA certifications
- PCB Dimensions 44.77 x 25.72 mm
Features of DC-DC Converter
- Continuous short-circuit protection
- Input 5V DC
- Output 5V DC
- Maximum Load Current 400mA
- No-load input current as low as 8mA
- Operating ambient temperature range: -40℃to +105℃
- High efficiency up to 86%
- High power density
- I/O isolation test voltage1.5kVDC
Video
https://www.youtube.com/watch?v=Kurc3FrInjY
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