蓝猫淘气

Dual 2A output synchronous DCDC converter evaluation board [LM26420]

Overview

### I took the time to draw a board with a professional print to study it, and it does have a lot more functions
## Introduction
* ##### The reason for verifying this is because I want a small size, high-current DCDC step-down chip with excellent performance. Used to power the 4G&GNSS module and the main control module connected to it
* ##### Select the resistor, capacitor and inductor by yourself. The inductor needs a saturation current of at least 6-7A. If there is enough space, it is recommended that the capacitor be 1206/0805
* ### ## Adjust R1-R4 to adjust the output voltage
* ##### For detailed technical parameters, please refer to [TI official website [LM26420XSQEVAL]](https://www.ti.com.cn/product/zh-cn/LM26420?keyMatch= LM26420&tisearch=search-everything&usecase=GPN-ALT):![image.png]

## Actual object
* ![_13b548696578980e99d4183b6322c21e_-649673531_IMG_20230722_221619.jpg]

* ![_28fbf0072 e85a358c469dac009fe42be_91708823_IMG_20230722_211001.jpg]

Design Files

Related Devices

Devices	Class	introduce	Datasheet
LM26420XSQ/NOPB	Power/power management;The power supply circuit	Output type: Adjustable Number of output voltage channels: 2 Output current: 2A Switch operating frequency: 2.2MHz Function type: Step-Down Output configuration: Positive	Download
0603WAF3162T5E	Passive components;SMD resistor	Resistance (ohms): 31.6K Accuracy: ±1% Power: 1/10W Temperature coefficient: ±100ppm/°C	Download
TMPC0502HP-1R0MG-D	Passive components;Power inductor	Accuracy: ±20% Rated current: 7A DC resistance (internal resistance): 17.5mΩ Inductance value: 1uH	Download
0603WAF4992T5E	Passive components;SMD resistor	Resistance (ohms): 49.9K Accuracy: ±1% Power: 1/10W Temperature coefficient: ±100ppm/°C	Download
0603B474K500NT	Passive components;The patch capacitance	Accuracy: ±10% Capacitance: 470nF Rated voltage: 50V Temperature drift coefficient (dielectric material): X7R Material: X7R	Download

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Update:2024-11-22 11:58:58

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