3
dc2194af
DEMO MANUAL DC2194A
performance summary
Specifications are at T
A
= 25°C
PARAMETER
CONDITIONS
VALUE
Dual Phase Single Output Configuration (Optional)
Input Voltage Range
4.5V to 20V
Input Voltage Range
2.5V to 20V
(with External CPWR Bias Supply)
Default Output Voltage
V
OUT
V
IN
= 4.5V to 20V
I
LOAD
= 0A to 8A
f
SW
= 800kHz
1.8V ±1.5%
Default Switching Frequency
Programmed Frequency with External Resistor from
FREQ Pin to SGND
800kHz ±10%
Maximum Continuous Output Current I
OUT
(Dual Phase Single Output)
V
IN
= 4.5V to 20V
f
SW
= 800kHz
8A
Output Voltage Ripples
(Peak-to-Peak)
V
OUT,P-P
(Dual Phase Single Output)
V
IN
= 12V
f
SW
= 800kHz
V
OUT
= 1.8V at I
OUT
= 8A
C
OUT
= 1x100µF + 1x47µF per channel
V
OUT,P-P
= 10mV (Figure 10a)
Dynamic Load Transient Response
V
OUT,P-P
(Dual Phase Single Output)
V
IN
= 12V
f
SW
= 800kHz
Mode = CCM
V
OUT
= 1.8V, I
OUT_STEP
= 4A to 8A
C
OUT
= 1x100µF + 1x47µF per Channel
V
OUT,P-P
= 138mV (Figure 9b )
Efficiency
(Dual Phase Single Output)
V
IN
= 12V
f
SW
= 800kHz
Mode = CCM
V
OUT
= 1.8V at I
OUT
= 8A
87.9 % (Figure 6)
Thermal Performance
(Dual Phase Single Output)
V
IN
= 12V
f
SW
= 800kHz
V
OUT
= 1.8V at I
OUT
= 8A
T
A
= 25°C, No Forced Airflow/Heat Sink
59.2°C Peak Temperature
(Figure 12a)
