EUS34-096 Datasheet, PDF (1/3 Pages) Murata Power Solutions Inc. – Isolated Bus Converter

EUS34-096
Isolated Bus Converter
FEATURES
RoHS compliant
48 VIN, Isolated, 5:1 fixed conversion ratio
240W output at 38 VIN, 55ºC, 200 LFM
300W output at 48 VIN, 55ºC, 200 LFM
Industry standard 1/8 brick footprint
Remote enable (primary side, positive or
negative)
Over-temperature, over current protections
Direct parallel operation for higher power
DESCRIPTION
The EUS34-096 is a RoHS compliant fixed 5:1
ratio bus converter in an industry standard
eighth brick footprint to support Intermediate
Bus Architecture (IBA) for powering multiple
downstream non-isolated point-of-load (POL)
converters. The output is unregulated and the 5:1
fixed ratio is maintained between the input and
output voltages. It features input voltage range of
38V to 55V, and provides up to 300W @ 48Vin of
power. Typical efficiency of 9.6V module is 96%.
It can be parallel for more power.
INPUT CHARACTERISTICS
Parameter
Input voltage operating range
Input voltage absolute
maximum
Conditions¹
Min. Typ. Max. Units
38
48
55
VDC
60
VDC
Input undervoltage lockout
Turn-on threshold
Turn-off threshold
Hysteresis voltage
34
35.5
36
VDC
32
33.5
34
VDC
2
VDC
Input overvoltage lockout
(latching type)
Turn-off threshold
57
58.5 59.5
VDC
Maximum input current
No-load input current
Disabled input current
Steady-state (34 A out)
Enabled state, no load (48 VIN)
Disabled state (48 VIN)
6.7
ADC
100
mA
7
mA
Input reflected ripple current
Measured into the input pin
Input capacitor 47μF type
Nichicon UPM1J470MPH or equivalant
240 mA rms
Inrush current
51
A
Enable - negative logic version
Internal 27.4 KΩ
pulled-up to internal 5.0V
On state range
Off state range
-0.1
0.8
VDC
2.4
15.0
VDC
Resistance from enable pin
to -VIN
With +VIN pin open, or tired to -VIN
TBD
KΩ
OUTPUT CHARACTERISTICS
Parameter
Conditions¹
Output voltage set point
VIN = 48V, IO = 0A
Output load regulation
IO = 0 to 34A
Output voltage total regulation
VIN = 38 to 55V, IO = 0 to 34A,
Ta = 55ºC
Output ripple & noise²
20MHz bandwidth
Output current operating range Corresponding to PO = 240W
Efficiency
VIN = 48V, PO = 240W
Turn-on delay
From enable, <0.8V to VO> 10%
for VIN = 38V - 55V
Output voltage rise time³
From 10% to 90%
Start-up inhibit time
Transient response³
Enabled: VIN applied to 90% VOUT
25% step, 1A/μs, ΔVO
Current sharing accuracy
At PO = 240W
Output turn on overshoot
Output turn off undershoot
Maximum output capacitance
Min. Typ. Max. Units
9.40 9.50 9.60 VDC
0.4
V
7.0
11.0 Vdc
50
150 mV p-p
0
34
A
96
%
0.1
10
ms
10
15
ms
150
ms
±3
%VO
3
10
%
0
3
%
0
3
%
3000 μF
1 VIN = 48Vdc, Ta = 25ºC, Airflow = 200 LFM for all data unless otherwise noted.
2 Output Ripple Voltage and noise is specified when measured with a 10uF tantalum and a 1μF ceramic capacitor at the output pins.
3 During output voltage rise time (15 mS Max.), output power shall be limited to 50% constant power.
Transient response is specified with a 960μF capacitor at the output of the converter.
Ḥ
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
Technical enquiries email: [e-mail], tel: [phone]
EUS35-96.B01 Page 1 of 3