Patent ID: 11880252
Assignee: SK HYNIX INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A system comprising:
a host including a power supply configured to provide a power supply voltage;
a plurality of storage devices coupled to the host through multiple peripheral component interconnect express (PCIe) links; and
multiple noise injection modules for testing power noise susceptibility of the plurality of storage devices,
wherein each noise injection module includes:
a first relay configured to receive the power supply voltage and output the power supply voltage to a first path or a second path in response to a frequency selection signal;
a second relay configured to receive a noise function and output the noise function to the first path or the second path in response to the frequency selection signal; and
a third relay coupled to the first path or the second path in response to the frequency selection signal and the storage device,
wherein the first path includes:
an operational amplifier configured to receive the noise function and generate a high noise function in response to the power supply voltage;
a first variable regulator configured to receive and regulate the power supply voltage to generate a first or second regulated power supply voltage in response to a voltage selection signal; and
a capacitor injection circuit configured to receive the first or second regulated power supply voltage, the noise function and the high noise function and generate a low noise function and a first power noise corresponding to the sum of the first or second regulated power supply voltage and the high noise function, and
wherein the second path includes:
a second variable regulator configured to receive and regulate the power supply voltage to generate a third or fourth regulated power supply voltage in response to the voltage selection signal; and
a power amplifier injection circuit configured to receive the third or fourth regulated power supply voltage and the low noise function and generate a second power noise corresponding to the sum of the third or fourth regulated power supply voltage and the low noise function, and
wherein the third relay selectively receives the first power noise and the second power noise in response to the frequency selection signal and provides the storage device with the selectively received power noise.