EA4524YH Datasheet, PDF (14/16 Pages) Active-Semi, Inc – 40V/3.5A Buck Converter with Dual Output and Separated Over Current Protection

TYPICAL PERFORMANCE CHARACTERISTICS
(Schematic as show in Figure 1, Ta = 25°C, unless otherwise specified)
Power Off from CC load
CH1
CH2
VIN = 12V
Vout=5.1V
IOUT = 3.4A
CH1
ACT4524
Rev 1.1, 22-Feb-16
Output Short Test
VIN = 12V
VOUT = 5.1V
IOUT = 3.6A
CH3
CH2
CH4
CH1: VIN, 5V/div
CH2: VOUT, 2V/div
CH3: IL, 5A/div
CH4: SW, 10V/div
TIME: 1ms//div
Output Short Recovery
VIN = 12V
VOUT = 5.1V
IOUT = 3.6A
CH1
CH2
CH3
CH1: VOUT, 2V/div
CH2: IL, 5A/div
CH3: SW, 10V/div
TIME: 2s//div
SW vs. Output Voltage Ripples
VIN = 12V
IOUT1 = 2.4A
Iout2= 0A
CH1
CH2
CH3
CH1: SW, 10V/div
CH2: VOUT1 Ripple, 50mV/div
CH3: VOUT2 Ripple, 50mV/div
TIME: 4µs/div
CH3
CH1: VOUT, 2V/div
CH2: IL, 5A/div
CH3: SW, 10V/div
TIME: 2s//div
SW vs. Output Voltage Ripples
VIN = 12V
IOUT1 = 0A
Iout2 = 1.0A
CH1
CH2
CH3
CH1: SW, 10V/div
CH2: VOUT1 Ripple, 50mV/div
CH3: VOUT2 Ripple, 50mV/div
TIME: 4µs/div
SW vs. Output Voltage Ripples
VIN = 12V
IOUT1 = 2.4A
Iout2= 1.0A
CH1
CH2
CH3
CH1: SW, 10V/div
CH2: VOUT1 Ripple, 50mV/div
CH3: VOUT2 Ripple, 50mV/div
TIME: 4µs/div
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