Texas Instruments LP877451Q1EVM, Руководство пользователя

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Figure 6-7. Layout of Signal Layer 2, Layer 4............................................................................................................................ 14
Figure 6-8. Layout of Ground Layer 2, Layer 5.......................................................................................................................... 14
Figure 6-9. Layout of Bottom Layer, Layer 6............................................................................................................................. 14
List of Tables
Table 2-1. Input and Output Voltages, and Load Current Requirements..................................................................................... 3
Table 3-1. Terminal Blocks........................................................................................................................................................... 4
Table 3-2. Configuration Jumpers................................................................................................................................................ 4
Table 3-3. Test Points on the EVM............................................................................................................................................... 6
Table 4-1. Jumper Connections for Powering the EVM............................................................................................................... 7
Table 6-1. Parts List................................................................................................................................................................... 15
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1 Top View with Basic External Connections
Figure 1-1 shows the top-view diagram of the EVM along with basic connections. By default, EVM is configured
to power up through VBAT supply through onboard 12 V VIN to 3.3 V VOUT pre-regulator. EVM can also be
powered through external 3.3 V supply or through USB port. Please refer to
Table 3-2 for the right jumper
configuration for each power-supply input.
VIN 3.3V (3V - 4V)
Nega ve Posi ve
VBAT
5V – 20V
Nega
ve
Posi ve
BUCK3 VOUT
BOOST VOUT
BUCK2 VOUT
BUCK1 VOUT
VIO_LDO
VOUT
USB
Default Jumpers
Figure 1-1. EVM Top-View Diagram With Basic Connections and Default Jumpers
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2 LP877451Q1EVM Evaluation Module SNVU769 – SEPTEMBER 2021
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