Texas Instruments TPS65235-1, Руководство пользователя

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Introduction
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2 SLVUAZ0 – November 2016
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Copyright © 2016, Texas Instruments Incorporated
Evaluation Module for the TPS65235-1 LNB Voltage Regulator With I
2
C
Interface for DiSEqC2.x Application
1 Introduction
The TPS65235-1 device is designed to provide 13-V and 18-V output voltage for satellite receiver, with an
operational range of 4.5 V to 16 V.
TPS65235-1 features I
2
C controlled output voltage from 11 V to 20 V with 16 options; output current limit
with ±10% accuracy is set by ISET pin connecting different resistors. The maximum output current limit is
up to 1 A.
TPS65235-1 can also run without I
2
C. In non-I
2
C mode, the SCL pin and VCTRL pin are used to control
13-V and 18-V output. These two pins can be controlled by GPIO from a processor. A dedicated enable
pin EN, is available to turn the LNB output on and off.
The evaluation module is designed to provide access to the features of the TPS65235-1 for DiSEqC2.x
application. While PWR747 is designed for DiSEqC1.x application, some modifications can be made to
this module to test performance at different input and output voltages, current, and switching frequency.
Contact TI Field Applications Group for advice on these matters.