Press Releases

Mar 7, 2017

Silego Announces GFET3 Integrated Power Switches in Wafer Level Chip Scale Packaging


Unlike other load switch products on the market in Wafer Level Chip Scale Package (WLCSP), Silego combines its world-class FET IP and system-level protection features in announcing three new, low-RDSON feature-rich Integrated Power Switches.

Santa Clara, California – March 7, 2017 – Silego Technology, a developer of Configurable Mixed-signal Integrated Circuits (CMICs), announced today an extension of its performance-driven GFET3 Integrated Power Switch (IPS) portfolio. Addressing extremely PCB-space-constrained, high-performance applications in tablet PC, smartphones and fitness band markets, these three new WLCSP products cover high-side power control applications from 1 A to 4 A.

For smartphone and fitness band applications, the 0.64 mm2 (0.8 mm x 0.8 mm) SLG59M1730C (33 mΩ/1 A) and the SLG59M1736C (33 mΩ/2.2 A) are low-leakage, self-powered pFET IPSs that can operate from 2.5 V to 5.5 V supply voltages and draw very little supply current. Both products offer low-threshold ON/OFF control, fast output voltage discharge, and a novel, controlled input current profile on startup. Since small form-factor Li-ion batteries exhibit very low amp-hour capacities, the SLG59M1730C/SLG59M1736C’s controlled 16.5 mA inrush current profile on startup prevents Li-ion battery voltage sag when Bluetooth radios or other high current-demand operations are enabled. When compared to other 4-ball WLCSPs in the market with fast, fixed output voltage rise times, the magnitude of the inrush current - directly proportional to the load capacitor value - can be quite large. If the resultant inrush current is large enough to cause the Li-ion battery voltage to sag, an inadvertent system reset can result. Thus, the SLG59M1730C/SLG59M1736C’s controlled inrush current attribute prevents unintended system resets from occurring.

For higher-power tablet pc applications, the SLG59M1735C is a 10.5 mΩ/4 A nFET IPS with a full suite of protection features. Powered from 2.5 V to 5.5 V supplies, the input voltage range extends down to 0.9 V to accommodate 1.0 V high-current rails found in FPGA, ASIC, and processor power sequencing applications. The SLG59M1735C feature set includes: ON/OFF control, soft-start control, undervoltage detection, and two-level current-limit protection. When compared to other packaged products in Silego’s GFET3 portfolio with similar features, the 1.5 mm2 SLG59M1735C is a 50% smaller footprint. When compared to other 4 A WLCSP/DFN products in the market with similar protection features, the SLG59M1735C is a 14% to 32% smaller footprint.

Using Silego’s proprietary MOSFET design IP, these highly-reliable integrated protection devices offer world-class nFET and pFET low RDSON performance. Applying Silego’s proprietary CuFETTM technology, the Company’s design engineers deftly craft these products into very-small WLCSP footprints that maximize system-level performance while minimizing thermal gradients in space-constrained, medium-current applications.

Silego’s newest additions to its expanding GFET3 product portfolio include:

Product Switch Type RDSON Continuous
Operating
Current
Supply Voltage
Range, VDD
Input Voltage
Range, VIN
Operating
TA(°C)
WLCSP
SLG59M1735C nFET 10.5 mΩ 4 A 2.5 V – 5.5 V 0.9 V - VDD -40 to 85 8L 1.5 mm2
SLG59M1730C* pFET 33 mΩ 1 A -- 2.5 V – 5.5 V -40 to 85 4L 0.64 mm2
SLG59M1736V* pFET 33 mΩ 2.2 A -- 2.5 V – 5.5 V -40 to 85 4L 0.64 mm2

*: The SLG59M1730C and the SLG59M1736C are self-powered from VIN (do not require a separate VDD supply)


Key features included in this new set of high-performance, GFET3 power control products are:

1. High-performance, low RDSON, low-leakage nFET or pFET MOSFETs

2. Built-in, System-level Circuit Protection Features:
  • Internally-controlled Inrush Current Profile (SLG59M1730C and SLG59M1736C)
  • Fast VOUT Discharge (SLG59M1730C and SLG59M1736C)
  • External Capacitor-adjustable Output Voltage Slew Rate (SLG59M1735C)
  • Two-level Current-limit Protection (SLG59M1735C)

Targeted applications addressed by these new WLCSP IPSs include:

  • Smartphones
  • Personal Fitness Bands
  • Digital Cameras
  • Handheld GPS Devices
  • Tablet PCs
  • FPGA, ASIC, and Processor Power Sequencing


Please contact Silego’s customer service team at: info@silego.com or visit Silego's website: www.silego.com 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
vitay@silego.com
408-327-8800