Datasheet

Data Sheet: Asceta
TM
iQG Series –Single Output Quarter Brick
© 2001 - 2012 TDK Innoveta Inc.
iQG 12V/33A Droop Load Share Rev 1.4 2/15/2012

(
877
)
498-0099
5/15
Electrical Data:
iQG48033A120V-1D0 through -1D9: 12V, 33A Output
Characteristic Min Typ Max Unit Notes & Conditions
Output Voltage Initial Setpoint 11.73 11.80 11.87 Vdc Vin=Vin,nom; Io=Io,min; Tc = 25˚C
Output Voltage Tolerance 11.6 11.8 12.0 Vdc
Over all rated input voltage and temperature
conditions to end of life (exclude the droop)
Efficiency at 100% Load ** --- 94.5 --- % Vin=Vin,nom; Io=Io,max; Tc = 25˚C
Efficiency at 25A Load (300W) ** --- 95 --- % Vin=Vin,nom; Io=Io,max; Tc = 25˚C
Line Regulation --- 20 50* mV Vin=39V to Vin,max, Io and Tc fixed
Voltage Droop Rate --- 20 --- mV/A Vin=Vin,min to Vin,max, Tc = 25˚C
Temperature Regulation --- 50 100* mV Tc=Tc,min to Tc,max, Vin and Io fixed
Load Share Accuracy
-10 --- +10 % 50% to 100% of total paralleling system
maximum load current, Tc = 25˚C
Output Current 0 --- 33 A
At Io < 25% of Io,max, the step load
transient performance may degrade slightly
Output Current Limiting Threshold --- 39 --- A Vo = 0.9*Vo,nom, Tc<Tc,max
Short Circuit Current --- 2 --- A Vo = 0.25V, Tc = 25C (hiccup mode)
Output Ripple and Noise Voltage
--- 80 150*
mVpp
Vin=48V, Io  Io,min, Tc=25˚C. Measured
across one 0.1uF, one 1.0 uF, and one
47uF ceramic capacitors, and one 440uF
electrolytic capacitor located 2 inches away
– see input/output ripple measurement
figure; BW = 20MHz
--- 23 --- mVrms
Output Voltage Adjustment Range --- --- --- %Vo,nom N/A
Output Voltage Sense Range --- --- --- %Vo,nom N/A
Dynamic Response:
Recovery Time to 10% of Peak Deviation
Transient Voltage
---
---
200
100
---
---
S
mV
di/dt = 0.1A/uS, Vin=Vin,nom; load step
from 50% to 75% of Io,max, Tc=25˚C with at
least one 1.0 uF, one 47uF ceramic
capacitors, and one 440uF electrolytic
capacitor across the output terminals
Note: Exclude the droop.
Output Voltage Overshoot during startup 0 0 --- mV Vin=Vin,nom; Io=Io,max,Tc=25˚C
Switching Frequency --- 110 --- kHz Fixed
Output Over Voltage Protection 13.7* 14.7 15.6* V
External Load Capacitance 488 ---
10,000
†
uF
Cext,min required for the 100% load dump.
Minimum ESR > 2.5 m
Isolation Capacitance --- 300 --- pF
Isolation Resistance 15 --- --- MΩ
Vref 1.225 V Required for trim calculation
* Engineering Estimate
** The module has no remote sense pins. The care must be taken when measures Vo to minimize the IR drop across the output pins
† Contact TDK Innoveta for applications that require additional capacitance or very low ESR