Power Supply Droop Detector on TSMC CLN5

The Droop Detector macro addresses SOC power supply and other voltage droop monitoring needs in a fully integrated easy-to-use macro. The Droop Detector macro includes an internal bandgap style voltage reference circuitwhich is used as a trimmed reference to compare the sampled input voltage against. The Droop Detector macro is a synchronous with latched output. Only when the monitored voltage input has exceeded a user-selected voltage level will the Droop Detector output signal indicate that a violation is detected.

The Droop Detector outputs a core logic level signal, with a high level representing a droop or continuous voltage above the selected value, and a low level representing a droop or continuous voltage below the selected value.

Specifications Description Min Typ Max Units Trigger Voltage Range 0.495 0.935 V Sensitivity 750 uV Operating Frequency 3 GHz Startup Time 10 us Area (Primary Droop Detector) 0.02 sq.mm Area (Additional Droop Detector) 0.01 sq.mm Total Power (each Droop Detector) 7 mA Output Load (Core level logic) 50 fF Operational Voltage (Digital, VDD) 0.495 0.75 0.825 V Operational Voltage (Analog, VDDA) 1.08 1.2 1.32 V Operational Temperature -40 25 125 C

• Integrated voltage reference for stand-alone operation
• Easy to integrate with no additional components or special power requirements
• Easy to use and configure
• Programmable droop detection levels
• Low power
• Implemented with Analog Bits’ proprietary architecture
• Requires no additional on-chip macros, minimizing power consumption