Delta Electronics Series 240W manual Technical Specifications, Parameter, NOTES and CONDITIONS

TECHNICAL SPECIFICATIONS

(TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)

PARAMETER	NOTES and CONDITIONS	E48SB12020 (Standard)
		Min.	Typ.	Max.		Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous				60		Vdc
Operating Temperature	Refer to Figure 18 for the measuring point	-40		128		°C
Storage Temperature		-55		125		°C
Input/Output Isolation Voltage				2250		Vdc
INPUT CHARACTERISTICS
Operating Input Voltage		38	48	55		Vdc
Input Under-Voltage Lockout
Turn-On Voltage Threshold		35	36	37		Vdc
Turn-Off Voltage Threshold		33	34	35		Vdc
Lockout Hysteresis Voltage		1	2	3		Vdc
Input Over-Voltage Lockout
Turn-Off Voltage Threshold		57.5	58.5	59.7		Vdc
Turn-On Voltage Threshold		55.5	56.5	57.5		Vdc
Lockout Hysteresis Voltage		1	2	3		Vdc
Maximum Input Current	100% Load, 44V Vin			5.68		A
No-Load Input Current			85	100		mA
Off Converter Input Current			10	11		mA
Inrush Current (I2t)				0.02		A2s
Input Reflected-Ripple Current	P-P thru 12µH inductor, 5Hz to 20MHz		10	20		mA
OUTPUT CHARACTERISTICS
Output Voltage Set Point	Vin=48V, Io=no load, Ta=25°C		11.85			Vdc
Output Voltage Regulation
Over Load	Io=Io,min to Io,max		300	400		mV
Over Line	Vin=38V to 55V		4.3	4.5		V
Over Temperature	Tc=-40°C to 105°C			250		mV
Total Output Voltage Range	over sample load, line and temperature	8.9		13.75		V
Output Voltage Ripple and Noise	5Hz to 20MHz bandwidth
Peak-to-Peak	Full Load, 1µF ceramic, 10µF tantalum		80	100		mV
RMS	Full Load, 1µF ceramic, 10µF tantalum		25	40		mV
Operating Output Power Range	Output current range when Vin below 44V	0		22.3		A
	Output power range when Vin=44V and above	0		240		W
Output Current Protection	Vin=38V to 55V	110		130		%
Current share accuracy (2 units in parallel)	% of rated output current		10		%
DYNAMIC CHARACTERISTICS
Output Voltage Current Transient	48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs
Positive Step Change in Output Current	50% Io.max to 75% Io.max		0			mV
Negative Step Change in Output Current	75% Io.max to 50% Io.max		0			mV
Settling Time (Vo deviation recover to 10% of max			0			us
deviation)
Turn-On Transient
Start-Up Time, From On/Off Control	100% Load	10		16		ms
Start-Up Time, From Input	100% Load	16		28		ms
Maximum Output Capacitance				3000		µF
EFFICIENCY
100% Load			96.3			%
60% Load			95.8		%
ISOLATION CHARACTERISTICS
Input to Output				2250		Vdc
Isolation Resistance		10				MΩ
Isolation Capacitance			1000			pF
FEATURE CHARACTERISTICS
Switching Frequency			190			kHz
ON/OFF Control, Negative Remote On/Off logic
Logic Low (Module On)	Von/off	-0.7		0.8		V
Logic High (Module Off)	Von/off	2		18		V
ON/OFF Control, Positive Remote On/Off logic
Logic Low (Module Off)	Von/off	-0.7		0.8		V
Logic High (Module On)	Von/off	2		18		V
ON/OFF Current (for both remote on/off logic)	Ion/off at Von/off=0.0V		0.25	0.3		mA
Leakage Current (for both remote on/off logic)	Logic High, Von/off=15V			30		uA
GENERAL SPECIFICATIONS
MTBF	Io=80% of Io, max;		2.01			M hours
Weight			31.76			grams
Over-Temperature Shutdown	Refer to Figure 18 for the measuring point		130			°C

DS_E48SB12020_05222008

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