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
4/15 
Absolute Maximum Ratings: 
Stress in excess of Absolute Maximum Ratings may cause permanent damage to the device. 
Input Characteristics: 
Unless otherwise specified, specifications apply over all Rated Input Voltage, Resistive Load, and Temperature conditions. 
Characteristic  Min  Typ  Max  Unit  Notes & Conditions 
Operating Input Voltage  36  48  75  Vdc 
When 36V  Vin  39V, the module will 
continue to operate, but the output voltage 
regulation may be slightly out of spec. 
Vo,min  10.4V at Vin=Vin,min & Io=Io,max 
Maximum Input Current  iQG48033A120V  ---  ---  10.5  A  Vin = 0 to Vin,max, Io=Io,max, Vo=Vo,nom 
  ---  ---  ---  A  Vin = 0 to Vin,max, Io=Io,max, Vo=Vo,nom 
Turn-on Voltage  ---  34.8  ---  Vdc   
Turn-off Voltage  ---  33.0  ---  Vdc   
Hysteresis --- 1.8 --- Vdc  
Startup Delay Time from application of input 
voltage 
---  18  ---  mS  Vo = 0 to 0.1*Vo,nom; on/off =on, 
Io=Io,max, Tc=25˚C 
Startup Delay Time from on/off   ---  3  ---  mS  Vo = 0 to 0.1*Vo,nom; Vin = Vi,nom, 
Io=Io,max,Tc=25˚C 
Output Voltage Rise Time  ---  36  ---  mS  Io=Io,max,Tc=25˚C, Vo=0.1 to 0.9*Vo,nom 
Inrush Transient  ---  ---  0.1  A
2
s  Exclude external input capacitors 
Input Reflected Ripple  ---  4  ---  mApp  See input/output ripple and noise 
measurements figure; BW = 20 MHz 
Input Ripple Rejection  ---  50  ---  dB  @120Hz 
* Engineering Estimate 
Caution: The power modules are not internally fused. An external input line normal blow fuse with a maximum value of 15A is required; see the 
Safety Considerations section of the data sheet. 
Characteristic  Min  Max  Unit  Notes & Conditions 
Continuous Input Voltage  -0.5  80  Vdc   
Transient Input Voltage  ---  100  Vdc  100mS max. 
Isolation Voltage 
 Input to Output 
--- 
1500 
Vdc 
Basic Insulation 
Storage Temperature  -55  125  ˚C 
Operating Temperature Range (Tc) 
-40 124  ˚C 
Measured at the location specified in the thermal 
measurement figure. Maximum temperature varies 
with model number, output current, and module 
orientation – see curve in thermal performance 
section of the data sheet. 










