PMIC Power Management Systems
The Power Management Integrated Circuits (PMIC) are critical components in electronic devices. They carry out major tasks such as power distribution, voltage regulation, battery charging and system protection, ensuring the safe and efficient operation of devices. PMICs are used in a wide variety of applications, from smartphones to tablet computers, or laptops to IoT devices. They play an essential role in these devices to ensure energy efficiency, increase battery life and optimize power consumption.
Nordic Semiconductor is a global leader in Low Power field. It has become a solution-oriented technology company in the field of IoT, with its Bluetooth, Wi-Fi, NB-IoT and recently PMIC technologies. Among the features of Nordic Semiconductor PMICs are the following.
High Efficiency DC-DC Converters:
For devices with low power consumption, there are high-efficiency DC-DC converters designed to use battery power efficiently.
Power Management Functions:
PMICs offer power management functions such as automatically selecting and routing the power source to meet energy requirements.
Battery Charge Control:
It has control and protection features for battery charging and discharging. This is particularly important to ensure both battery safety and long-lasting usage in portable devices.
Optimization for Low Power Modes:
PMICs are optimized for various low power modes to ensure low power consumption. This helps the device achieve maximum efficiency in standby mode or in low power conditions.
Power Supply Options:
PMICs usually offer the ability to switch between external power sources and the battery. This allows the device to select the most suitable power source according to its energy requirements.
Ability to Monitor and Manage Power Consumption:
PMICs usually have the capabilities to monitor and manage power consumption. This allows the device to analyze and optimize power usage.
Now, let’s delve into the PMIC products by Nordic, as well as their main features Nordic has made tremendous impact in PMIC field by launching its nPM family. Nordic, which has two products, NPM1100 and NPM1300, provides solutions to its customers in applications that require batteries. The NPM1100 and NPM1300 both allow the users to charge their batteries and also act as regulators with the DC/DC buck regulator at the output.
The main features that distinguish these two products
The Npm1100 is able to regulate the voltage applied to the input of up to 20V as outputs 1.8V, 2.1V, 2.7V and 3V. It provides high
efficiency DC/DC buck current output of up to 150mA. The user can specify the current that the adjustable battery will draw between 20mA and 400mA. Also, maximum of 500mA can be applied to the input. A power efficiency of 92% can be achieved at the output. It can be preferred also with its appropriate PCB size. The BQ25150 PMIC produced by TI offers a battery life of 48 hours according to the tests, while the Nordic NPM1100 offers a battery life of 87 hours. So it is roughly 88% more efficient. It helps to extend your battery life with a current consumption of up to 470 NA in sleep mode.
PMIC offers unique system management features and accurate battery measurement for low-power wireless applications.
nPM1300 PMIC has further enriched its structure with Fuel Gauging feature, by integrating basic functions into a compact package.
PMIC also provides unique system management features and accurate battery measurement for low-power wireless applications. The nPM1300’s unique algorithm-based battery status indicator is the first to achieve this balance between high accuracy and low power consumption by using voltage, current and temperature monitoring for higher accuracy than voltagebased battery indicators. With nPM1300, you can monitor the status of your battery. You can do this simply over I2C communication and read the value without having to write any code. The nPM1300 PMIC operates from an external power supply of 4.0 to 5.5 V, or a battery voltage of up to 2.4V. It is regulated by separate DC/DC buck converters, which can be configured with two regulators between 1.0 and 3.3 V and for up to a maximum current of 200 mA.
The nPM1300 charges single-cell Li-ion, Li-poly and LiFePO4 batteries with a linear charging module that supports charging current of up to 800 mA and a programmable termination voltage of 3.5 to 4.45 V. The battery charger has automatic thermal regulation with programmable maximum chip temperature during charging. In other words, after the chip starts to overheat, the charger takes some measures to prevent overheating. This allows the user to set a specific temperature value for the chip with a programmable maximum chip temperature, and perfectly adjust the “thin line” between charging speed and safety. If you are looking for a PMIC that will allow you to charge your
battery, use it as a regulator, monitor the state of your battery, and which is also equipped with external watchdog and hard reset function, nPM1300 is just for you! We are waiting for you at Özdisan Elektronik to try these unique products and get support for these products.
