SIP12202 Datasheet, PDF (7/10 Pages) Vishay Siliconix – Synchronous Step Down Controller

TYPICAL WAVEFORMS
New Product
SiP12202
Vishay Semiconductors
V_LX = 5 V/div
DH = 5 V/div
DL = 5 V/div
Inductor Current
5 A/div
1 µs/div
V_IN = 5 V, V_OUT = 2.5 V, Load Current = 5 A, L = 1.5 µH,
C_OUT = 220 uF X 2
Typical Switching Waveform
Comp/SD = 1 V/div
V_OUT = 1 V/div
P_G = 5 V/div
Inductor Current
5 A/div
1 ms/div
V_IN = 5 V, V_OUT = 2.5 V, Load Current = 1 A,
Output Filter Cap = 220 uF X 2
Soft Start
V_OUT = 500 mV/div
Inductor Current
5 A/div
10 µs/div
V_IN = 5 V, V_OUT = 2.5 V, Load Current = 1 A to 8 A Step,
L = 1.5 µH, C_OUT = 220 uF X 2
Load Transient Response
V_OUT = 20 mV/div
1 µs/div
V_IN = 5 V, V_OUT = 2.5 V, Load Current = 1 A,
L = 1.5 µH, C_OUT = 220 uF X 2
Output Voltage Ripple
Comp/SD = 1 V/div
V_OUT = 1 V/div
Inductor Current
5 A/div
1 ms/div
V_IN = 5 V, V_OUT = 2.5 V, Load Current = 1 A,
Output Filter Cap = 220 uF X 2
Shut Down
Document Number: 73542
S-52083–Rev. A, 10-Oct-05
www.vishay.com
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