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LMZ31710 bảng dữ liệu(PDF) 2 Page - Texas Instruments

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tên linh kiện LMZ31710
Giải thích chi tiết về linh kiện  Simple Switcher짰 Power Module Evaluation Module
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Trang chủ  http://www.ti.com
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Description
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1
Description
This EVM features the LMZ31710 (10-A), LMZ31707 (7-A), or LMZ31704 (4-A), synchronous buck power
module configured for operation with typical 5-V and 12-V input bus applications. The output voltage can
be set to one of seven popular values by using a configuration jumper. In similar fashion, the switching
frequency can be set to one of seven values with a jumper. The full output current rating of the device can
be supplied by the EVM. Input and output capacitors are included on the board to accommodate the entire
range of input and output voltages. Monitoring test points are provided to allow measurement of efficiency,
power dissipation, input ripple, output ripple, line and load regulation, and transient response. Control test
points are provided for use of the PWRGD, Inhibit/UVLO, synchronization, and slow-start/tracking features
of the LMZ317xx device. The EVM uses a recommended PCB layout that maximizes thermal performance
and minimizes output ripple and noise.
2
Getting Started
Figure 1 highlights the user interface items associated with the EVM. The polarized PVin Power terminal
block (TB1) is used for connection to the host input supply and the polarized Vout Power terminal block
(TB2) is used for connection to the load. These terminal blocks can accept up to 16-AWG wire. The
polarized Vbias terminal block (TB3) is used along with the Vin select jumper (P1) when optional split
power supply operation is desired. Refer to the LMZ317xx datasheet for further information on split power
supply operation.
Figure 1. LMZ317xxEVM User Interface
The PVin Monitor and Vout Monitor test points located near the power terminal blocks are intended to be
used as voltage monitoring points where voltmeters can be connected to measure PVin and Vout. The
voltmeter references should be connected to any of the four PVin/Vout Monitor Grounds test points
located between the power terminal blocks. Do not use these PVin and Vout monitoring test points as the
input supply or output load connection points. The PCB traces connecting to these test points are not
designed to support high currents.
The PVin Scope and Vout Scope test points can be used to monitor PVin and Vout waveforms with an
oscilloscope. These test points are intended for use with un-hooded scope probes outfitted with a low-
inductance ground lead (ground spring) mounted to the scope barrel. The two sockets of each test point
are on 0.1 in centers. The scope probe tip should be connected to the socket labeled PVin or Vout, and
the scope ground lead should be connected to the socket labeled PGND.
2
LMZ31710, LMZ31707 and LMZ31704 Simple Switcher® Power Module
SLVU895A – March 2013 – Revised June 2013
Evaluation Module
Submit Documentation Feedback
Copyright © 2013, Texas Instruments Incorporated


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