APW8871 Datasheet, PDF (12/27 Pages) Anpec Electronics Coropration – DDR4 TOTAL POWER SOLUTION (VPP/VDDQ/VTT) SYNCHRONOUS DC/DC CONVERTER for NB/MB

APW8871
Operating Waveforms
S5 Shutdown-Enable, Non-Zero VDDQ
4
3
2
1
CH1: VPOK (5V/div)
CH2: V_VDDQ (1V/div)
CH3: VVPP (2V/div)
CH4: VS5 (5V/div)
Time: 200µs/div
VDDQ Load Transient,
IVDDQ = 0A->8A->0A
3
2
1
CH1: I_L1 (5A/div)
CH2: VVDDQ (AC,200mV/div)
CH3: VLX1 (20V/div)
Time: 50µs/div
VTT Source Load Transient,
IVTT = 0A->1A->0A
4
3
2
1
CH1: IVTT (500mA/div)
CH2: V_VTT (AC,100mV/div)
CH3: VLX1 (20V/div)
CH4: VVDDQ (1V/div)
Time: 100µs/div
VTT Source Load Transient,
IVTT = 0A->1A->0A
4
3
2
1
CH1: IVTT (500mA/div)
CH2: V_VTT (AC,100mV/div)
CH3: VLX1 (20V/div)
CH4: V_VDDQ (1V/div)
Time: 100µs/div
C opyright © ANPEC Electronics C orp.
12
Rev. A.1 - Sep., 2015
www.anpec.com.tw