TECHNICAL DATASHEET
Rev A
EJR48S5-2000
10W DC/DC Converter
36-75 VDC Input
5 VDC Single Output at 2A
Features:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
RoHS Compliant
No Minimum Load Requirement
10 Watts Output Power
Trim Function: ±10%
High Efficiency up to 81%
Basic Isolation
Input to Output Isolation: 1500VDC min
2:1 Wide Input Voltage Range
Remote ON/OFF Control
CNT Function
Industry Standard Footprint: 2” x 1” x 0.40”
Industry Standard Pin-out
Low Output Noise
Output Over Current Protection
Options:
•
•
•
RoHS Compliance
Short Pins or Long Pins
Positive or Negative Logic or No Logic
for CNT Function
Description:
The EJR48S5-2000 is a new open frame DC/DC converter for optimum efficiency and power
density. This model provides 2A of output current in an industry standard 2 x 1 x 0.4 inch package.
The small size makes this series an ideal choice for small spaces, high current, and low voltage
applications. This series provides CNT and trim functions, high efficiency, and positive or negative
logic remote on/off.
(888) 597-WALL
www.wallindustries.com
Page 1 of 12
Rev. A
TECHNICAL DATASHEET
EJR48S5-2000
Technical Specifications
SPECIFICATION
INPUT (V
in
)
Operating Voltage Range
Input Current
Input Voltage
Input Reflected Ripple Current (20MHz BW)
Under-Voltage Lock Out
OUTPUT (V
o
)
Output Voltage Setpoint
Load Regulation
Line Regulation
Output Voltage Adjustment Range
Minimum Load
Output Ripple & Noise (5Hz to 20MHz BW)
Vin = Vin,min to Vin, max, full load; Ta = 25°C
Minimum load to maximum load
LL to HL at Full Load
(See page 8)
Measured with a 1µF /10V X7R ceramic capacitor and a
10µF/30V tantalum capacitor
Model No.
Related condition
Vin = 36V to 75Vdc, Io = Io, max
Continuous
Transient (100ms)
Nominal Vin, full load, Ta = 25°C
12µH differential-mode inductance; 220µF/100V aluminum
capacitor
Turn on at
Turn off at
EJR48S5-2000
Nom
48
All specifications are based on 25°C, Nominal Input Voltage, and Maximum Output Current unless otherwise noted.
We reserve the right to change specifications based on technological advances.
Min
36
0
0
Max
75
0.4
80
100
20
NO
NO
Unit
Vdc
A
Vdc
mA
pk-pk
Vdc
5
4.95
-1%
5.0
25
10
5.05
+1%
Vdc
mV
mV
%Vo
A
mV
pk-pk
90
0
40
110
70
Rated Output Current
0
2
A
Output Voltage Overshoot
Io, max, Ta = 25°C
0
150
mV
Turn-On Time
Io, max
1
5
ms
Start Delay Time
I0, max, Ta = 25°C
5
12
ms
Output Power
10
W
External Load Capacitance
2200
µF
Output Current-Limit Inception
Latch
2.2
3.2
A
PROTECTION
Over Voltage Protection
clamp
NO
Vdc
Over Current Protection
(See page 9)
2.2
3.2
A
Short Circuit Protection
Continuous, automatic recovery
DYNAMIC LOAD RESPONSE
(∆Io/∆t = 1A/10µs, nominal Vin, Ta = 25°C (measured with a 1µF /100V ceramic capacitor and a 10µF/35V tantalum capacitor)
Load Step (25% to 50%)
Io, max.
40
50
mV
Deviation Settling Time (25% to 50%)
To nominal Vout
150
200
µs
Load Step (10% to 100%)
Io, max.
140
180
mV
Deviation Settling Time (10% to 100%)
To nominal Vout
450
500
µs
REMOTE ON/OFF
(add the suffix “R” to the part number for Negative Remote ON/OFF or “-1” to the part number for no Remote ON/OFF pin) (See page 7)
High Level = ON
3.5
10
Positive Logic (Standard)
Vdc
Low Level = OFF
-0.7
0.8
Enable Pin Voltage
Low Level = ON
-0.7
0.8
Negative Logic (Option)
Vdc
High Level = OFF
3.5
10
Logic Low
2.0
Positive Logic
mA
Logic High (leakage current)
-
-
-
Enable Pin Current
Logic Low
4.0
Negative Logic
mA
Logic High (leakage current)
-
-
-
GENERAL
Switching Frequency
320
kHz
Efficiency
Nominal Vin, and full load; Ta=25°C
80
81
%
Isolation Voltage (Input-Output)
1mA for 1min, slew rate of 1500V/10sec
1500
Vdc
Isolation Capacitance
1000
pF
ENVIRONMENTAL
o
Operating Ambient Temperature
-40
55
C
o
Operating Case Temperature
-40
100
C
o
Storage Temperature
-55
125
C
Operating Humidity
5
95
RH%
Temperature Coefficient
0.02
% / °C
MTBF
Io = Io,max, Tc=25°C
(See page 11)
2,000,000
hours
MECHANICAL
Weight (encapsulated)
23.3 grams
2.0 x 1.0 x 0.4 inches
Dimensions (L x W x H)
(See page 3)
50.80 x 25.40 x 10.16 mm
(888) 597-WALL
www.wallindustries.com
Page 2 of 12
Rev. A
TECHNICAL DATASHEET
EJR48S5-2000
EJR48S5-2000 Graphs.
All test conditions are at 25°C
Graph 1:
Typical Efficiency
Graph 2:
Typical Output Over Current Curve
Graph 3:
Typical Output Ripple and Noise
(Nominal Vin and Full Load)
Graph 4:
Typical Transient Response to Step Increase in Load from
50% to 75% of Full Load at Nominal Vin (∆Io/∆t = 1A/10µs)
(888) 597-WALL
www.wallindustries.com
Page 4 of 12
Rev. A
TECHNICAL DATASHEET
EJR48S5-2000
EJR48S5-2000 Graphs (Continued).
All test conditions are at 25°C
Graph 5:
Typical Transient Response to Step Increase in Load from
10% to 100% of Full Load at Nominal Vin (∆Io/∆t = 1A/10µs)
Graph 6:
Typical Input Start-Up from Power On
(Nominal Vin and Full Load)
Graph 7:
Typical Input Start-Up from CNT On
(Positive Logic)
(888) 597-WALL
www.wallindustries.com
Page 5 of 12
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