Delta Electronics ND Series manual Technical Specifications, Parameter

TECHNICAL SPECIFICATIONS

(Ambient Temperature=25°C, minimum airflow=200LFM, nominal Vin=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	A2S
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

DS_ND12S10A_07172008

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