QUS40-096 Datasheet, PDF (1/3 Pages) Murata Power Solutions Inc. – Isolated Bus Converter

QUS40-096
Isolated Bus Converter
FEATURES
RoHS compliant
48 VIN, Isolated, 5:1 fixed conversion ratio
385W power at 48VIN
300W output at 38 VIN, 55ºC, 200 LFM
Industry standard ¼ brick footprint
Remote enable (primary side, positive or
negative)
Over-temperature, over current protections
Direct parallel operation for higher power
DESCRIPTION
The QUS40-096 is a RoHS compliant fixed 5:1
ratio bus converter in an industry standard
quarter 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 384W @ 48Vin of
power or 300W at 38Vin @ 55ºC, typical efficiency
of 9.6V module is 96.6%. It can be parallel for
more power.
INPUT CHARACTERISTICS
Parameter
Input voltage operating range
Conditions¹
Min. Typ. Max. Units
38
48
55
Input voltage absolute
maximum
60
Input undervoltage lockout
Input overvoltage lockout
Maximum input current
No-load input current
Disabled input current
Turn-on threshold
Turn-off threshold
Hysteresis voltage
Turn-on threshold
Turn-off threshold
Hysteresis voltage
Steady-state (40 AOUT)
Enabled state, no load (48VIN)
Disabled state (48VIN)
34 35.5 36
32
33.5
34
VDC
2
55
58
57 58.5 59.5
2
8.4
9
ADC
100
mA
7
mA
Input reflected ripple current
Measured into the input pin
Input capacitor 47μF type
Nichicon UPM1J470MPH or equivalant
300 mA rms
Enable - negative logic version
Internal 27.4KΩ
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
16.12
KΩ
OUTPUT CHARACTERISTICS
Parameter
Conditions¹
Output voltage set point
VIN = 48V, IO = 0A
Output load regulation
Output voltage total regulation
IO = 0 to 40A
VIN = 38 to 55V, PO = 0 to 300W,
Ta = 55ºC
Output ripple & noise²
20MHz bandwidth
Output current operating range Corresponding to PO = 300W
Efficiency
VIN = 48V, PO = 300W
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, Co=1200μF
Current sharing accuracy
(up to 3 in parallel)
At PO = 300W
Output turn on overshoot
Output turn off undershoot
Maximum output capacitance
Min. Typ. Max. Units
9.40 9.50 9.60 VDC
0.35
V
7.0
11.0
VDC
80
150 mV p-p
0
42
A
96.6
%
0.5
10
ms
12
15
ms
140
ms
220
350
%VO
5
10
%
0
350 mV
0
350 mV
3750 μF
1 VIN = 48Vdc, Ta = 25ºC, Airflow = 200LFM for all data unless otherwise noted.
2 Output Ripple Voltage and noise is specified when measured with a 10μF tantalum and a 1uF ceramic capacitor at the output pins.
3 During output voltage rise time (15ms 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]
QUS40-096.B01 Page 1 of 3