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TPD13S523PWR 데이터시트(PDF) 3 Page - Texas Instruments |
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TPD13S523PWR 데이터시트(HTML) 3 Page - Texas Instruments |
3 / 16 page HDMI Controller To 5V Supply TPD13S523PWR 0.1µF 0.1µF GND Vias Bottom Layer Top Layer TPD13S523 www.ti.com SLVSBC5A – MARCH 2012 – REVISED MAY 2012 LAYOUT SCHEME USING TPD13S523 The TPD13S523 device offers little or no signal distortion during normal operation due to low IO capacitance and ultra-low leakage current specifications. In the event of an ESD stress, this device ensures that the core circuitry is protected and the system is functioning properly. For proper operation, the following layout/ design guidelines should be followed: 1. Place the TPD13S523 as close to the connector as possible. This allows the TPD13S523 to take away the energy associated with ESD strike before it reaches the internal circuitry of the system board. 2. Place two 0.1- μF capacitors very close to the 5V_SUPPLY and 5VOUT pins. These capacitors will help limit the noise at the 5VOUT power line, and also help with system level ESD protection. 3. Ensure that there is enough metallization for the GND pad. During normal operation, the TPD13S523 ESD pins consume ultra low leakage current. During the ESD event, GND pin will see multiple amps current. Sufficient current paths enables safe discharge of all the energy associated with the ESD strike. 4. Leave the unused IO pins floating. If there is no UTILITY pin protection required, it is recommended to leave CTRL5 open (Figure 2). Connect the CEC, SCL, SDA, and HPD lines to CTRL1-CTRL4 pins. 5. The critical routing paths for HMDI interface are the high-speed TMDS lines. With the PW package, all the TMDS lines (pin Dxx) can be routed in a single signal plane and still maintain the differential coupling & trace symmetry. This helps reduce the overall board manufacturing cost. The slow speed control lines can be routed in another signal layer through VIAs. Figure 2. TPD13S523PWR Layout Example 12-Line HDMI Protection (Leave CTRL5 Open) Copyright © 2012, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s) :TPD13S523 |
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