Delta Electronics S48SE Technical Specifications, Parameter, NOTES and CONDITIONS, Efficiency

TECHNICAL SPECIFICATIONS

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

PARAMETER	NOTES and CONDITIONS		S48SE05003 (Standard)
			Min.	Typ.	Max.	Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous					80	Vdc
Transient(100ms)	100ms				100	Vdc
Operating Temperature	Refer to Figure 20 for measuring point		-40		109	°C
Storage Temperature			-55		125	°C
Input/Output Isolation Voltage					2250	Vdc
INPUT CHARACTERISTICS
Operating Input Voltage			36		75	Vdc
Input Under-Voltage Lockout
Turn-On Voltage Threshold			33	34	35	Vdc
Turn-Off Voltage Threshold			31	32	33	Vdc
Lockout Hysteresis Voltage			1.0	2	3.0	Vdc
Maximum Input Current	100% Load, 36Vin				0.5	A
No-Load Input Current				18	30	mA
Off Converter Input Current				7		mA
Inrush Current (I2t)					0.01	A2s
Input Reflected-Ripple Current	P-P thru 12µH inductor, 5Hz to 20MHz			15		mA
Input Voltage Ripple Rejection	120 Hz			60		dB
OUTPUT CHARACTERISTICS
Output Voltage Set Point	Vin=48V, Io=Io.max, Tc=25°C		4.925	5.0	5.075	Vdc
Output Voltage Regulation
Over Load	Io=Io, min to Io, max			±3	±10	mV
Over Line	Vin=36V to 75V			±3	±10	mV
Over Temperature	Tc=-40°C to 100°C			±50		mV
Total Output Voltage Range	Over sample load, line and temperature		4.85		5.15	V
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			12		mV
Operating Output Current Range			0		3	A
Output DC Current-Limit Inception	Output Voltage 10% Low		110		140	%
DYNAMIC CHARACTERISTICS
Output Voltage Current Transient	48V, 10µF Tan & 1µF Ceramic load cap, 0.1A
Positive Step Change in Output Current	50% Io.max to 75% Io.max			100		mV
Negative Step Change in Output Current	75% Io.max to 50% Io.max			100		mV
Settling Time (within 1% Vout nominal)				250		us
Turn-On Transient
Start-Up Time, From On/Off Control				16	25	ms
Start-Up Time, From Input				16	25	ms
Maximum Output Capacitance	Full load; 5% overshoot of Vout at startup				1000	µF
EFFICIENCY
100% Load				87.0		%
60% Load				86.0		%
ISOLATION CHARACTERISTICS
Input to Output					2250	Vdc
Isolation Resistance			10			MΩ
Isolation Capacitance				1000		pF
FEATURE CHARACTERISTICS
Switching Frequency				400		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		mA
Leakage Current (for both remote on/off logic)	Logic High, Von/off=15V				30	uA
Output Voltage Trim Range	Across Trim Pin & +Vo or –Vo, Pout≦max rated	-10%			10%	%
Output Over-Voltage Protection	Over full temp range;		5.75		7.5	V
GENERAL SPECIFICATIONS
MTBF	Io=80% of Io, max; Ta=25°C, 300LFM			5.71		M hours
Weight				9.2		grams
Over-Temperature Shutdown	Refer to Figure 20 for measuring point			115		°C

DS_S48SE05003_12292006

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