US 12,260,893 B2
Semiconductor memory module and device having power management unit for supplying stable and accurate voltages to DRAM chip array
Sung Yun Ryu, Hwaseong-si (KR); and Sang Seok Kang, Suwon-si (KR)
Appl. No. 18/010,402
Filed by JM SEMICONDUCTOR. CO., LTD., Gyeonggi-do (KR); Sung Yun Ryu, Gyeonggi-do (KR); and Sang Seok Kang, Gyeonggi-do (KR)
PCT Filed Nov. 22, 2021, PCT No. PCT/KR2021/017152
§ 371(c)(1), (2) Date Dec. 14, 2022,
PCT Pub. No. WO2022/124632, PCT Pub. Date Jun. 16, 2022.
Claims priority of application No. 10-2020-0172283 (KR), filed on Dec. 10, 2020.
Prior Publication US 2023/0298658 A1, Sep. 21, 2023
Int. Cl. G11C 11/4074 (2006.01)
CPC G11C 11/4074 (2013.01) 4 Claims
OG exemplary drawing
 
1. A semiconductor memory module receiving a source voltage and a voltage regulation command signal from a semiconductor memory control unit to perform electrical operation comprising:
a dynamic random access memory (DRAM) array; and
a power management unit supplying a cell array voltage to the DRAM array, wherein
the power management unit includes:
a reference voltage generator receiving the source voltage from a source voltage supplier of the semiconductor memory control unit to generate a reference voltage (Vref);
a voltage regulation controller receiving the voltage regulation command signal from a voltage regulation commander of the semiconductor memory control unit to generate a control signal;
an internal voltage generator receiving the reference voltage from the reference voltage generator and receiving the control signal from the voltage regulation controller to generate a cell array reference voltage (VrefA);
an internal voltage driver receiving the cell array reference voltage (VrefA) from the internal voltage generator and stabilizing the cell array reference voltage (VrefA) to supply a cell array voltage (VDDA) to the DRAM array; and
a voltage compensation unit receiving the cell array voltage (VDDA) by feedback to transmit a compensation command signal to the voltage regulation controller, and
the voltage compensation unit includes:
a voltage measurer receiving the cell array voltage (VDDA) by feedback to measure a voltage value and outputting a measurement voltage value;
a voltage comparator receiving the measurement voltage value, and comparing the measurement voltage value and a reference voltage value acquired based on the voltage regulation command signal received from the voltage regulation commander to output a comparison signal; and
a voltage compensation commander receiving the comparison signal and transmitting the compensation command signal to the voltage regulation controller based on the comparison signal.