MEZS84801A Datasheet, PDF (1/3 Pages) MPS Industries, Inc. – 48V, 12W, PoE Power Supply, IEEE 802.3af Compliant

mEZS84801A
48V, 12W, PoE Power Supply, IEEE 802.3af Compliant
FEATURES
 37V to 57V PSE Input
 12V Output Voltage
 1A Load Current
 No Optocoupler Feedback
 Over-Current Protection
 Over-Temperature Protection
 Over-Voltage Protection
 Minimal External Components
Do-It-Yourself Option Available
Power Derating
VIN = 48V, VOUT = 12V
Natural Convection
Efficiency vs. Load Current
VIN = 37V, 48V, and 57V, VOUT = 12V
ORDERING INFORMATION
Part Number
Input Voltage Output Voltage Output Current
(V)
(V)
(A)
Efficiency
MEZS84801A
37 - 57
12
1
Up to 85%
ELECTRICAL CHARACTERISTICS
Input Voltage Range
VIN Continuous
Output Voltage Set Accuracy
Output Voltage Ripple
Line Regulation
IOUT = 1A
Load Regulation
Efficiency
Switching Frequency
Minimum Output Current
IOUT = 1A, Include Input Bridge
IOUT = 1A
Operating Temperature
Range
Start-Up Time
VIN on to VOUT Regulated
Calculated MTBF
MIL-HDBK-217F
37V to 57V
±4% (Typ.)
180mV (Typ.)
±0.5% (Typ.)
±0.2% (Typ.)
84.5%
140kHz (Typ.)
10mA
0 to 85°C
110ms (Typ.)
4185x10³ hrs
NOTE: All electrical characteristics are tested under 25°C ambient temperature, V_IN = 3.3V unless otherwise noted.
mEZS84801A Rev. 1.0
www.MonolithicPower.com
1
3/1/2017
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2017 MPS. All Rights Reserved.