Linear Technology DC1477B, Демонстрационное руководство

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dc1477bfa
DEMO MANUAL DC1477B
Quick start proceDure
Figure 4. Measured Load Transient Response (1.5A Step, 50% to 100%)
Figure 5. Input Voltage Ripple Measured at C
IN1
with 300MHz BW Probe, with and without the Input Filter
V
OUT
(500mV/DIV)
I
OUT
STEP (1A/DIV)
V
IN
= 10V, V
OUT
= 30V, CCM MODE
1.5A to 3A LOAD STEP
C
OUT
= 2 × 10µF C 2 × 100µF ALUM
V
OUT
(200mV/DIV)
I
OUT
STEP (1A/DIV)
V
IN
= 36V, V
OUT
= 30V, CCM MODE
1.5A to 3A LOAD STEP
C
OUT
= 2 × 10µF C 2 × 100µF ALUM
V
IN
(1V/DIV)
SW2 (10V/DIV)
SW1 (20V/DIV)
V
IN
= 10V, V
OUT
= 30V, I
OUT
= 3A
W/O INPUT FILTER: SHORT L2 AND L3, REMOVE C
IN2
V
IN
= PEAK-TO-PEAK RIPPLE = 2.78V
V
IN
(1V/DIV)
SW2 (10V/DIV)
SW1 (20V/DIV)
V
IN
= 10V, V
OUT
= 30V, I
OUT
= 3A
W/ INPUT FILTER: STUFF L2, L3, AND C
IN2
V
IN
PEAK-TO-PEAK RIPPLE = 0.47V