Delta Electronics Technical Specifications, Parameter, NOTES and CONDITIONS, H48SR1R880NRFA

TECHNICAL SPECIFICATIONS

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

PARAMETER	NOTES and CONDITIONS		H48SR1R880NRFA
		Min.		Typ.	Max.	Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous					80	Vdc
Transient (100ms)	100ms				100	Vdc
Operating Device Temperature	Tc	-40			115	°C
Storage Temperature		-55			125	°C
Input/Output Isolation Voltage	1 minute	1500				Vdc
INPUT CHARACTERISTICS
Operating Input Voltage		36		48	75	Vdc
Input Under-Voltage Lockout
Turn-On Voltage Threshold		32.5		34	35	Vdc
Turn-Off Voltage Threshold		31		32	33.5	Vdc
Lockout Hysteresis Voltage		1		2	3	Vdc
Maximum Input Current	100% Load, 36Vin				5	A
No-Load Input Current				100	140	mA
Off Converter Input Current				15	25	mA
Inrush Current(I t)				0.03		A S
Input Reflected-Ripple Current	P-P thru 12µH inductor, 5Hz to 20MHz			10		mA
Input Voltage Ripple Rejection	120 Hz			60		dB
OUTPUT CHARACTERISTICS
Output Voltage Set Point	Vin=48V, Io=Io.max, Tc=25°C	1.75		1.8	1.85	Vdc
Output Voltage Regulation
Over Load	Io=Io,min to Io,max			±2	±7	mV
Over Line	Vin=36V to 75V			±2	±5	mV
Over Temperature	Tc=-40°C to 100°C			±20	±50	mV
Total Output Voltage Range	over sample load, line and temperature	TBD			TBD	V
Output Voltage Ripple and Noise	5Hz to 20MHz bandwidth
Peak-to-Peak	Full Load, 1µF ceramic, 10µF tantalum			70	120	mV
RMS	Full Load, 1µF ceramic, 10µF tantalum			20	40	mV
Operating Output Current Range		0			80	A
Output DC Current-Limit Inception	Output Voltage 10% Low	105			130	%
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			50	100	mV
Negative Step Change in Output Current	75% Io,max to 50% Io,max			50	100	mV
Settling Time (within 1% Vout nominal)				200		uS
Turn-On Transient
Start-Up Time, From On/Off Control				10	20	mS
Start-Up Time, From Input	-40°C to +125°C			20	40	mS
Maximum Output Capacitance	Full load; 5% overshoot of Vout at startup				20000	µF
EFFICIENCY
100% Load				89		%
60% Load				90		%
ISOLATION CHARACTERISTICS
Input to Output		1500				Vdc
Isolation Resistance		10				MΩ
Isolation Capacitance				3000		pF
FEATURE CHARACTERISTICS
Switching Frequency				240		kHz
ON/OFF Control, (Logic Low-Module ON)
Logic Low	Von/off at Ion/off=1.0mA	0			0.8	V
Logic High	Von/off at Ion/off=0.0 µA				15	V
ON/OFF Current	Ion/off at Von/off=0.0V				1	mA
Leakage Current	Logic High, Von/off=15V				50	uA
Output Voltage Trim Range	Across Pins 9 & 5, Pout <= max rated power	0.8			1.9	V
Output Voltage Remote Sense Range	Pout <= max rated power				10	%
Output Over-Voltage Protection	Over full temp range; % of nominal Vout	115		130	155	%
GENERAL SPECIFICATIONS
MTBF	Io=80% of Io, max; Ta=25°C,airflow rate=300 LFM			1.41		M hours
Weight				66		grams
Over-Temperature Shutdown	Power Region Temperature			130		°C

2

DS_H48SR1R880_06272006