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Does Qualcomm SMB1355 support USB Type-C?
Technical Blog / Author: icDirectory / Date: Jul 07, 2024 15:07
The Qualcomm SMB1355 is primarily a power management IC (PMIC) designed to support fast charging protocols such as Qualcomm Quick Charge and USB Power Delivery (USB PD). Here’s a detailed explanation regarding its support for USB Type-C:

1. Charging Protocol Support:
- The SMB1355 is compatible with USB Type-C connectors in devices that implement USB PD. USB PD is a fast charging protocol that allows for higher power delivery compared to traditional USB standards like USB 2.0 or USB 3.0. It supports bi-directional power delivery and negotiates power levels between the charger (source) and the device (sink) dynamically.

2. Power Delivery Capabilities:
- USB PD allows the SMB1355 to deliver power up to 100W (watts) depending on the configuration and capabilities of the charger and the connected device. This is particularly useful for charging laptops, tablets, and other high-power devices that require more than the standard 5V/2.4A output.

3. USB Type-C Connector:
- USB Type-C is the physical connector that supports USB PD and other functionalities such as data transfer, video output (via DisplayPort or HDMI adapters), and audio through a single connection. The SMB1355 can manage the power delivery through the USB Type-C connector, ensuring compatibility with devices that utilize this modern interface.

4. Flexibility and Compatibility:
- Devices incorporating the SMB1355 can therefore utilize USB Type-C for charging, data transfer, and additional functionalities enabled by the USB PD standard. This includes adaptive charging profiles, efficient power management, and support for various voltage levels (5V, 9V, 12V, 15V, and 20V) to accommodate different device requirements.

5. Safety and Compliance:
- The SMB1355 adheres to USB PD specifications for interoperability and safety, ensuring that connected devices are charged safely within specified voltage and current limits. It includes protection mechanisms such as over-voltage protection (OVP), over-current protection (OCP), and thermal management to safeguard against potential charging hazards.

In summary, the Qualcomm SMB1355 supports USB Type-C connectivity primarily through its compatibility with the USB Power Delivery (USB PD) protocol. This allows for versatile and efficient charging across a wide range of devices that utilize USB Type-C connectors, enhancing user convenience and device interoperability.

icDirectory Limited | https://www.icdirectory.com/a/blog/does-qualcomm-smb1355-support-usb-type-c.html
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