Texas Instruments TVS 0 Series, Руководство пользователя, Страница: 2 / 15

200 mil
(5mm)
SOLDER
SOLDER
Bidirectional
Adapter Board
145 mil
(3.7mm)
50 mil
(1.27mm)
200 mil
(5mm)
SOLDER SOLDER
Unidirectional
Adapter Board
105 mil
(2.6mm)
55 mil
(1.4mm)
85 mil
(2.16mm)
Introduction
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2 SLVUBJ8 – October 2018
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Copyright © 2018, Texas Instruments Incorporated
Flat Clamp TVS Evaluation Module—Adaptor Boards
1 Introduction
Texas Instrument’s TVSxx0x evaluation module helps designers evaluate the operation and performance
of the TVSxx0x family of devices. The TVSxx0x family is a precision clamp that keeps ultra-low and flat
clamping voltage during transient overvoltage events like surge. With TI’s precision surge technology, the
TVSxx0x's clamping voltage barely changes up to its maximum surge current. The TVSxx0x also
responds fast to the surge to limit overshoot voltage during clamping. Used in the system, its superior
voltage suppression performance ensures a safe environment for downstream protected circuits.
2 Board Setup
The Flat Clamp Adaptor Board EVM is designed to allow the user to evaluate the protection performance
of the TVSxx0x in their own system without having to make any changes to their existing schematic or
layout. The EVM serves as an adaptor board to allow the small size of the QFN chip to be placed pin for
pin in the industry standard SMA and SMB surge protector footprints. Users can easily replace their
existing surge solution chip with the TVS3300 EVM to evaluate the component.
This EVM kit contains 36 adapter boards with 6 boards for each of the TVSxx0x voltage levels. 3 adapter
boards per voltage level are in unidirectional configuration and 3 adapter boards per voltage level are in
bidirectional configuration. Based on their system, the user must use the unidirectional configuration if the
signal on the protected line stays above 0 V. Otherwise, it is recommended to use the bidirectional
configuration, which can protect the system if the signal contains both positive and negative voltages.
The unidirectional adapter boards are all 105mil x 200mil (2.6mm x 5mm) and the bidirectional adapter
boards are 145mil by 200mil (3.7mm x 5mm). The solderable pad underneath each adapter board is 85mil
x 55mil for the unidirectional and 145mil x 50mil for the bidirectional. This can be seen in the figures
below.
Figure 1. Unidirectional Adapter Board
Figure 2. Bidirectional Adapter Board