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ISL73847SEH Datasheet Pwm Controller

Manufacturer: Intersil (now Renesas)

Overview: ISL73847SEH Radiation Hardened Single/Dual Phase Current Mode PWM Controller Datasheet The ISL73847SEH is a synchronous buck controller that can operate as a single or dual-phase controller. It works with the ISL73041SEH (half-bridge GaN FET driver) to generate point-of-load voltage rails for mercial space applications. It accepts an input voltage range of 4.5V to 19V with a programmable PWM output switching frequency between 250kHz and 1.5MHz with a single resistor. The output can regulate a voltage upwards of 600mV and is limited on the top end by the minimum off time and selected switching frequency. The wide input voltage range makes it a suitable power supply option for a high-current FPGA core and other general-purpose power solutions. The ISL73847SEH uses current mode modulation, which simplifies loop pensation and provides excellent power supply rejection. Additionally, the output is remotely sensed to pensate for any voltage drop in the load conditions. Together, results in a robust power supply solution that requires minimal ponents while achieving high current density.

Key Features

  • a tri-level output that provides excellent protection against faults by driving a mid scale voltage to signal the power stage to enter a Hi-Z condition. The ISL73847SEH operates across the military temperature range from -55°C to +125°C and is available in a 24 Ld hermetically sealed Ceramic Dual Flatpack (CDFP) package or in die form.

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ISL73847SEH Distributor