ISL95837HRZ-T

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The ISL95837HRZ-T is a high-efficient, low-input voltage bi-directional multiphase synchronous buck DC-DC converter used to deliver power in industrial applications such as communications and networking, computing, and industrial automation. It can accept a wide range of input voltages and offers power conversion efficiency up to 94% over full temperature range. Moreover, it provides superior light load efficiency and no load power consumption at its low state of functionality. The ISL95837HRZ-T meets the requirements of the IEC 60068-2-xx Test-Fc seismic test standard.

The ISL95837HRZ-T provides a complete power solution in applications where the input voltage range is from 4.5V to 26V and where the output voltage is adjustable by a regulated voltage. The typical switching frequency of the device is 2.2MHz, this enables a smaller solution size when compared to conventional DC-DC converters operating at high switching frequencies. The voltage regulation accuracy of the converter is excellent and can be adjusted in the range of ±3%. This gives high accuracy of output voltage, with a very low input range tolerance and low ripple noise. The current monitor of the device generates an output voltage that is proportional to the output current of the converter.

The ISL95837HRZ-T enables the use of a series of advanced protection features such as Under Voltage Lockout (UVLO), Over Voltage Protection (OVP), Short Circuit Protection (SCP), Thermal Shutdown (TSD), and Over Temperature Protection (OTP). These protections are used to maintain the circuit safely at all times during operation and protect from any abnormal conditions. Moreover, the environmental temperature range supported by ISL95837HRZ-T is from -40°C to 105°C, which makes it suitable for applications in extreme environmental conditions.

The ISL95837HRZ-T employs an advanced four phase interleaving control method to reduce output voltage ripple, increase light load efficiency and improve power density. It also provides high accuracy during light load conditions. The ISL95837HRZ-T integrates a buck output power stage, a switching controller, a feedback circuit and a power MOSFETs. It comes in a HZ-T package, reducing the power losses due to thermals and enabling a high power density. Additionally, it is designed with a sync hysteretic control loop that reduces component count, resulting in more efficient and reliable power supplies.

The ISL95837HRZ-T is suitable for use in both single- and multi-phase power supplies and is particularly targeted towards applications in the industrial and communications sectors that require efficient power conversion with superior voltage accuracy. It is also suitable for powering electrical subsystems in industrial automation, computing and networking end equipment.

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