Texas Instruments LMR12020 Evaluation Module LMR12020XSDEVM/NOPB LMR12020XSDEVM/NOPB 数据表
产品代码
LMR12020XSDEVM/NOPB
User's Guide
SNVU191A – October 2012 – Revised April 2013
AN-2279 LMR12020 Evaluation Module
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Introduction
The LMR12020 evaluation module is designed to provide the power supply design engineer with a fully
functional regulator design which can be synchronized to an external clock between 1000 kHz and 2350
kHz. The evaluation module provides two output voltage options viz. 3.3V and 5V with a 2A current
capability. Without an external synchronization signal, the design operates at 2000 kHz reducing the
solution size and keeping switching noise out of the AM radio band. The PCB consists of 4 layers of
copper on FR4 material. The first middle layer is a solid ground layer which helps in minimizing the AC
current loop. The LMR12020 is thermally tied to the other layers by thermal vias directly underneath the
device. This user's guide contains the evaluation module schematic, a quick setup procedure, and a Bill-
of-Materials (BOM). For complete circuit design information, see LMR12015/LMR12020 SIMPLE
SWITCHER 20Vin, 1.5A/2A Step-Down Voltage Regulator in WSON-10 (
functional regulator design which can be synchronized to an external clock between 1000 kHz and 2350
kHz. The evaluation module provides two output voltage options viz. 3.3V and 5V with a 2A current
capability. Without an external synchronization signal, the design operates at 2000 kHz reducing the
solution size and keeping switching noise out of the AM radio band. The PCB consists of 4 layers of
copper on FR4 material. The first middle layer is a solid ground layer which helps in minimizing the AC
current loop. The LMR12020 is thermally tied to the other layers by thermal vias directly underneath the
device. This user's guide contains the evaluation module schematic, a quick setup procedure, and a Bill-
of-Materials (BOM). For complete circuit design information, see LMR12015/LMR12020 SIMPLE
SWITCHER 20Vin, 1.5A/2A Step-Down Voltage Regulator in WSON-10 (
).
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Features
Parameter
3.3V Output Voltage Option
5V Output Voltage Option
Input Range
5 to 20V
7 to 20V
Output Voltage
3.3V
5V
Output Current
0 to 2A
0 t0 2A
Frequency of Operation
1000 kHz - 2350 kHz
1000 KHz - 2350 KHz
Default Frequency of Operation
2000 kHz
2000 kHz
Board Size
1.944 × 1.35 inches (49.37 × 34.29 mm)
1.944 × 1.35 inches (49.37 × 34.29 mm)
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SNVU191A – October 2012 – Revised April 2013
AN-2279 LMR12020 Evaluation Module
Copyright © 2012–2013, Texas Instruments Incorporated