Press Releases

Jan 18, 2017

Expanding the State-of-the-Art in System Protection Devices, Silego Announces Five New High-current HFET1 Integrated Power Switches

Unlike other products on the market with low RDSON/high IDS attributes, Silego announced five new, robust high-voltage/high-current HFET1 integrated power switches (IPSs) with built-in FET protection and designed for enterprise applications.

Santa Clara, California – January 18, 2017 – Silego Technology, a developer of highly configurable and cost-effective mixed signal products, today announced an expansion of its HFET1 integrated power switch portfolio.

To address high-performance applications in enterprise computing, industrial, and in-cabin infotainment markets, these five new products cover 12 V and 24 V applications from 2.5 A to 6 A. These products include a suite of system-level protection features including internal FET power limiting. In many high-power (current and/or voltage) applications, discrete circuits or integrated power switches are used to prevent very high inrush currents from causing system brownouts or unintentional system resets. In addition to this responsibility, tight pcb layouts, poor thermal cooling, and elevated operating temperatures place additional performance burdens on system protection devices. In these and other cases, system designers are forced to select very expensive solutions or design custom and complicated, discrete, pcb-space-consuming alternatives. Silego’s HFET1 products greatly simplify system designers’ workload while minimizing system risk.

In pcb-space-efficient 4.8 mm² footprints, these high-voltage/current IPSs combine ON/OFF control, inrush current control, under/over-voltage detection, two-level current-limit protection, and fault reporting features. With the exception of the SLG59H1127V, these new HFET1 products include an analog current monitor output feature. This feature alone offers substantial system BOM cost/pcb savings by eliminating the need for an external current shunt resistor, a difference/level-shifting amplifier, and associated passive components to measure directly FET current. While all products can operate over the industrial temperature range, the SLG59H1013V and the SLG59H1016V are fully specified over the entire -40°C to 125°C extended industrial temperature range.

All HFET1 IPSs implement a unique power-limit protection scheme to protect the internal FET against any abuse on startup or during nominal operation. Compared to the other four products with an internal 5-W power limit, the SLG59H1128V’s 15-W power-limit threshold relaxes external circuit constraints on startup.

Using Silego’s proprietary MOSFET design IP, these robust integrated system protection devices maintain ultra-stable, low RDSONs across the applied supply voltage range. Applying Silego’s proprietary CuFET™ technology, the Company’s design engineers deftly package these products in low thermal-resistance, RoHS-compliant footprints that generate low thermal gradients in space-constrained, high-current applications.

Silego’s newest additions to its expanding HFET1 product portfolio include:

Product VIN (max) RDSON Continuous Operating Current Internal nFET SOA Threshold Open-drain Power Good Output Open-drain FAULT Output Analog Output Monitor Operating TA (°C)
SLG59H1012V 22 V 13.1 mΩ 6 A 5 W nFET IDS -40 to 85
SLG59H1013V 12 V/24 V 13.3 mΩ 4 A 5 W X nFET IDS -40 to 125
SLG59H1016V 22 V 13.1 mΩ 3.5 A 5 W X nFET IDS -40 to 125
SLG59H1127V 13.2 V 17 mΩ 2.5 A 5 W X -40 to 85
SLG59H1128V 22 V 13 mΩ 3.5 A 15 W X nFET IDS -40 to 85

Key features included in this new set of high-performance, HFET1 high-current power control products are:

  • High-performance, low RDSON, low-leakage nFET MOSFETs
  • Built-in, System-level Circuit Protection Features
    • External Capacitor-adjustable Output Voltage Slew Rates
    • Two-level Current-limit Protection:
      • Fixed and External Resistor-adjustable Active Current Limit (ACL)
      • Fixed Short-circuit Current (SCL)
    • Thermal Shutdown with Automatic Restart
    • Fast VOUT Discharge
  • Open-drain FAULT and Power Good Signaling (selected part numbers)
  • MOSFET IDS Analog Current Monitor Output (selected part numbers)

Targeted applications addressed by these high-voltage IPSs include:

  • Routers/Switches/Other Enterprise Networking Equipment
  • In-cabin Infotainment Systems
  • Servers/Other Enterprise Computing Equipment
  • General-purpose, High-side, High-current Power-Rail Control/Distribution:
    • Set-top Boxes
    • Embedded WLAN Modules and Cards
    • Notebook/Laptop/Tablet PCs
    • Embedded Solid-state Drives (SSDs)
  • Multifunction Enterprise Printers/Copiers

Please contact Silego’s customer service team at: or visit Silego’s website: for pricing, samples, datasheets and additional technical information about these new and other high-performance integrated power switches in Silego’s GFET3 and HFET1 product portfolios.

About Silego – The CMIC Company

Silego Technology is a fabless semiconductor company creating configurable mixed-signal integrated circuits, or CMICs, which enable a paradigm shift in the way that hardware engineers design their systems. The Company’s CMICs integrate analog, digital logic, mixed-signal and power functions while eliminating passive and discrete components. The Company’s CMICs enable original equipment manufacturers, or OEMs, in high-volume applications to deliver cost-effectively their hardware products to market faster and with greater design flexibility. The Company’s scalable CMIC platform is comprised of its configurable ICs, its proprietary design software, and its development kits. The Company’s solution consists of its proprietary CMIC platform and its delivery model, which includes its interactive design support, rapid prototyping of customer designs and flexible, cost-optimized manufacturing. The Company’s solution provides its customers with mixed-signal ICs that address power, timing, and interface functions in their systems.

For media information contact:
Victoria Sereda
Silego WW MarCom Manager