XR71211EHMTR-F

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The XR71211EHMTR-F is a high-performance DC-DC step-down switching controller suitable for a wide range of applications. It is a PMIC (Power Management IC), under the Voltage Regulators subcategory, and in particular, the DC DC Switching Controllers class.

The XR71211EHMTR-F provides several convenient features, such as a wide operating supply voltage range (1.5V to 24V), a low quiescent current of 2.0 μA, and a wide PWM frequency range of 1 kHz to 3 MHz. It also features an analog voltage-based feed-forward loop compensation, which simplifies the compensation and reduces the number of external components required. Additionally, the XR71211EHMTR-F features short-cycle protection, cycle-by-cycle current limit, and optional logic-level shutdown capability.

The XR71211EHMTR-F can be used in a wide range of applications, such as DVD Power Supply, Battery charger, Power over Ethernet (PoE) systems, and set-top box power supply. It can also be used in motor drivers and DC motor controls, such as Electric Vehicle Inverters and Fan Drives. In addition, this device can also be used in µProcessor and µController core power supplies, as well as in industrial, telecom, and medical power systems.

The working principle behind the XR71211EHMTR-F is quite simple. The device is powered by an external voltage source and features an onboard voltage regulator that regulates the power to the XR71211EHMTR-F. The output voltage is then generated by a Pulse Width Modulation (PWM) circuit. The PWM circuit controls the duty cycle of the power switch, or the MOSFET, and the output voltage is then determined by this duty cycle.

The XR71211EHMTR-F also features a 2-channel current sense amplifier. The current sense amplifier can measure the load current on the output side and provide feedback to the XR71211EHMTR-F. This feedback is then used to adjust the duty cycle and keep it within a safe range. If the current exceeds a predefined value, the device will automatically switch off the output to protect the system.

In addition, the XR71211EHMTR-F also features an analog voltage-based feed-forward loop compensation. This feature ensures that the transient response of the system is optimized and the output voltage remains within the desired range during any load and temperature changes.

The XR71211EHMTR-F is thus an extremely useful device for a wide range of applications, due to its flexibility and performance. Thanks to its onboard features and optimised design, the device offers improved performance and reduced external component count, which translates to increased reliability and cost savings.

The specific data is subject to PDF, and the above content is for reference