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TPD2E001 데이터시트(PDF) 7 Page - Texas Instruments |
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TPD2E001 데이터시트(HTML) 7 Page - Texas Instruments |
7 / 24 page 0.1 µF USB Controller R T R T V BUS D+ D– GND GND IO2 D1 IO1 V CC 7 TPD2E001 www.ti.com SLLS684I – JULY 2006 – REVISED MARCH 2016 Product Folder Links: TPD2E001 Submit Documentation Feedback Copyright © 2006–2016, Texas Instruments Incorporated 8 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 8.1 Application Information TPD2E001 is a diode array type Transient Voltage Suppressor (TVS) which is typically used to provide a path to ground for dissipating ESD events on hi-speed signal lines between a human interface connector and a system. As the current from ESD passes through the TVS, only a small voltage drop is present across the diode. This is the voltage presented to the protected IC. The low RDYN of the triggered TVS holds this voltage, VCLAMP, to a tolerable level to the protected IC. 8.2 Typical Application Figure 5. Typical USB Application Diagram 8.2.1 Design Requirements For this design example, a single TPD2E001 is used to protect all pins of a USB 2.0 connector. Given the USB application, Table 1 shows the Design Parameters: Table 1. Design Parameters DESIGN PARAMETER VALUE Signal range on IO1, and IO2 0 V to 5 V Signal voltage range on VCC 0 V to 5 V Operating frequency 240 MHz 8.2.2 Detailed Design Procedure To begin the design process, some parameters must be decided upon; the designer needs to know the following: • Signal voltage range on all the protected lines • Operating frequency The VCC pin can be connected in two different ways: 1. If the VCC pin is connected to the system power supply, the TPD2E001 works as a transient suppressor for any signal swing above VCC + VF. A 0.1-μF capacitor on the device VCC pin is recommended for ESD |
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