The ISL73847SLH is a synchronous buck controller that can operate as a single or dual-phase controller. It works with the ISL71441SLH (half-bridge GaN FET driver) to generate point-of-load voltage rails for commercial 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 ISL73847SLH uses current mode modulation, which simplifies loop compensation and provides excellent power supply rejection. Additionally, the output is remotely sensed to compensate for any voltage drop in the load conditions. Together, these features result in a robust power supply solution that requires minimal components while achieving high current density.
The ISL73847SLH also 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 ISL73847SLH operates across the military temperature range from -55 °C to +125 °C and is available in a 24 Ld WSOIC plastic package.
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| Type | Title | Date |
| Datasheet | PDF 3.39 MB | |
| Report | PDF 1.49 MB | |
| Brochure | PDF 5.02 MB | |
| Materials Composition Declaration | PDF 98 KB | |
| Materials Composition Declaration | XML 6 KB | |
| Technical Brief | PDF 403 KB | |
| Report | PDF 840 KB | |
| White Paper | PDF 533 KB | |
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The ISL73847MDEMO1Z demonstration board demonstrates the performance of the ISL73847M dual-phase buck controller. The board is optimized for a 4.5V to 15V input...
The ISL73847MDEMO2Z demonstration board demonstrates the performance of the ISL73847M dual-phase buck controller in single-phase mode. The board is optimized for a 4.5V...
The ISLVERSALDEMO2Z demo board provides the power management for the AMD Xilinx Space Grade Versal ACAP AI Core VC1902 using Renesas' Radiation Hardened Power...
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
| SOICW | 75krad(Si) | Tray | 25 | 1 |
