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DS_NC12S30A_05222008
2
TECHNICAL SPECIFICATIONS
(T
A
=25°C, airflow rate=400LFM, V
in
=12Vdc, nominal Vout unless otherwise noted.)
PARAMETER NOTES and CONDITIONS NC12S0A0V30
Min. Typ. Max. Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage 14 Vdc
Operating Temperature Refer to Figures 36 and 41 for the measuring point -40 125 °C
Storage Temperature -40 125 °C
Input/Output Isolation Voltage Non-isolated NA V
INPUT CHARACTERISTICS
Operating Input Voltage 10.2 12 13.8 V
Input Under-Voltage Lockout
Turn-On Voltage Threshold 9.0 V
Turn-Off Voltage Threshold 8.3 V
Lockout Hysteresis Voltage 0.7 V
Maximum Input Current 100% Load, 10.2Vin, 5Vout 15.6 A
No-Load Input Current 160
mA
Off Converter Input Current 10 mA
Input Reflected-Ripple Current Refer to Figure 35 150 mA
Input Voltage Ripple Rejection 120 Hz 55 dB
OUTPUT CHARACTERISTICS
Output Voltage Adjustment Range 0.9 5.0
V
Output Voltage Set Point
Vin=12V, Io=Io,max, Ta=25℃, 1% trim resistors
-3.0 +3.0 %
Output Voltage Regulation
Over Load Io=Io,min to Io,max -1.0 +1.0 %
Over Line Vin=Vin,min to Vin,max -0.2 +0.2 %
Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth
Peak-to-Peak Full Load, 1µF ceramic, 10µF tantalum 50 mV
RMS Full Load, 1µF ceramic, 10µF tantalum 15 mV
Output Current Range 0 30 A
Output Voltage Over-shoot at Start-up Vin=12V, Turn ON 1 %
Output Voltage Under-shoot at Power-Off Vin=12V, Turn OFF 100 mV
Output DC Current-Limit Inception 36
A
Output Short-Circuit Current (Hiccup mode) 36 A
DYNAMIC CHARACTERISTICS
Out Dynamic Load Response 12Vin, 10µF Tan & 1µF Ceramic load cap, 10A/µs
Positive Step Change in Output Current 50% Io,max to 75% Io,max 75 mV
Negative Step Change in Output Current 75% Io,max to 50% Io,max 75 mV
Setting Time Settling to be within regulation band (+/- 3.0%) 150 µs
Turn-On Transient Io=Io.max
Start-Up Time, From On/Off Control
Vin=12V, Vo=10% of Vo,set, Ta=25℃
10
ms
Start-Up Time, From Input
Vo=10% of Vo,set, Ta=25℃
30 ms
Minimum Output Startup Capacitive Load
Ex: Two OSCON 6.3V/680µF (ESR 13mΩ max each)
1360
Maximum Output Startup Capacitive Load
Full load; ESR ≧10mΩ
5440 µF
Minimum Input Capacitance
Ex: OSCON 16V/270µF (ESR 18mΩ max)
270 µF
EFFICIENCY
Vo=0.9V
Vin=12V, Io=30A 78 %
Vo=1.2V Vin=12V, Io=30A 82 %
Vo=1.5V Vin=12V, Io=30A 85 %
Vo=1.8V Vin=12V, Io=30A 87 %
Vo=2.5V Vin=12V, Io=30A 90 %
Vo=3.3V Vin=12V, Io=30A 92 %
Vo=5.0V Vin=12V, Io=30A 94 %
FEATURE CHARACTERISTICS
Switching Frequency 300 KHz
ON/OFF Control Positive logic (internally pulled high)
Logic High Module On (or leave the pin open) 2.4 Vin,max V
Logic Low Module Off -0.2 0.8 V
Remote Sense Range 0.4 V
GENERAL SPECIFICATIONS
MTBF 1.69 M hours
Weight 36 grams
Over-Temperature Shutdown
Auto restart, refer to Fig. 36&41 for the measuring point 130 °C