Delta Electronics Delphi ND Series - Manual (Page 2)

DS_ND12S10A_07172008
2
TECHNICAL SPECIFICATIONS
(Ambient Temperature=25°C, minimum airflow=200LFM, nominal V
in
=12Vdc unless otherwise specified.)
PARAMETER NOTES and CONDITIONS ND12S0A0V50 (Standard)
Min. Typ. Max. Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage -0.3 13.8 Vdc
Operating Temperature Refer to Figure 32 for the measuring point 0 124 °C
Storage Temperature -40 125 °C
Input/Output Isolation Voltage Non-isolated NA V
INPUT CHARACTERISTICS
Operating Input Voltage 10.2 12.0 13.8 V
Input Under-Voltage Lockout
Turn-On Voltage Threshold 8.5 9.0 9.5 V
Turn-Off Voltage Threshold 7.1 7.6 8.1 V
Lockout Hysteresis Voltage 1.4 V
Maximum Input Current 100% Load, 10.2Vin, 3.3Vout 24 A
No-Load Input Current Vin=12V, Vout=3.3V 250 mA
Off Converter Input Current Remote OFF 15 30 mA
Inrush Transient Vin=10.2~13.8V, Io=Min to Max Load 1.00 A 2 S
Input Reflected-Ripple Current Refer to Figure 31. 20 mA
Input Ripple Rejection 120Hz 60 dB
OUTPUT CHARACTERISTICS
Output Voltage Adjustment Range 0.9 3.63 V
Output Voltage Set Point With a 1.0% trim resistor -2 +2 %
Output Voltage Regulation
Over Load Io=Io_min to Io_max -1 +1 %
Over Line Vin=Vin_min to Vin_max -0.2 +0.2 %
Total output range Over load, line, temperature regulation and set point -3 +3 %
Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth
Peak-to-Peak Full Load, 1uF ceramic, 10uF Tan cap and 4*680uF OSCON 25 50 mV
RMS Full Load, 1uF ceramic, 10uF Tan cap and 4*680uF OSCON 5 15 mV
Output Current Range 0 50 A
Output Voltage Over-shoot at Start-up Vin=12V, Turn ON 2 %
Output Voltage Under-shoot at Power-Off Vin=12V, Turn OFF 100 mV
Output DC Current-Limit Inception Hiccup mode 110 200 %Iomax
DYNAMIC CHARACTERISTICS
Output Dynamic Load Response 12Vin, 1uF ceramic, 10uF Tan cap and 4*680uF OSCON
Positive Step Change in Output Current 25A to 37.5A, 10A/uS 75 mV
Negative Step Change in Output Current 37.5A to 25A, 10A/uS 75 mV
Settling Time Settling to be within regulation band (to 10% Vo deviation) 50 µs
Turn-On Transient
Start-Up Time, from On/Off Control From Enable high to 90% of Vo 10 ms
Start-Up Time, from input power From Vin=12V to 90% of Vo 10 ms
Minimum Output Capacitance Ex: One OSCON 6.3V/680uF (ESR=13mΩ max) 680 µF
Maximum Output Startup Capacive Load Full Load (ESR≧1mΩ) 3000 µF
Minimum Input Capacitance 0 µF
EFFICIENCY
Vo=0.9V Vin=12V, Io=50A 81 %
Vo=1.2V Vin=12V, Io=50A 84.5 %
Vo=1.5V Vin=12V, Io=50A 87 %
Vo=1.8V Vin=12V, Io=50A 88.5 %
Vo=2.5V Vin=12V, Io=50A 91 %
Vo=3.3V Vin=12V, Io=50A 92.5 %
Vo=3.63V Vin=12V, Io=50A 92.8 %
FEATURE CHARACTERISTICS
Switching Frequency Fixed 300 KHz
ON/OFF Control Positive logic (internally pulled high)
Logic High Module On (or leave the pin open) 2.4 Vinmax V
Logic Low Module Off -0.2 0.8 V
Remote Sense Range 0.5 V
GENERAL SPECIFICATIONS
Calculated MTBF Telcordia SR-332 Issue1 Method1 Case3 at 50°C TBD Mhours
Weight 34.2 grams
Over-Temperature Shutdown Refer to Figure 32 for the measuring point 134 °C