The QMS Series of converters provide a single, isolated step-down
voltage (3.3, 5 or 12 VDC nominal) from a wide-input voltage range (18
– 60 VDC). The QMS is an excellent choice in applications where
multiple input voltage options are required. The designer can use a
single QMS converter to cover both 24Vin and 48Vin input ranges,
eliminating the need to specify multiple circuit packs to handle each
input range. This is particularly useful in wireless base station
applications where the power plants tend to vary and could provide
nominal 24 or 48 V input.
The QMS converters are highly efficient over the entire wide-input
voltage range, cost-effective, and offer a low profile, industry-standard
quarter-brick footprint. The standard feature set includes remote
on/off, remote output voltage sensing, industry-standard output trim,
input undervoltage lockout, and overtemperature shutdown with
hysteresis.
RoHS lead free solder and lead solder exempted products are available
Ultra-wide input range: 18 to 60 VDC
Cost-effective, single board construction
High efficiency
Low profile
Input-to-output isolation: 1500 VDC
Basic Insulation
Start-up into high capacitive load
Low conducted and radiated EMI
Output overcurrent protection
Output overvoltage protection
Input undervoltage lockout
Overtemperature protection
Approved to UL 60950-1/ CAN/CSA-C22.2 No. 60950-1, and TUV
approved to EN 60950-1, IEC 60950-1
2
QMS Series
MODEL
INPUT
VOLTAGE VDC
INPUT
CURRENT, MAX
ADC
1
OUTPUT
VOLTAGE
VDC
OUTPUT RATED
CURRENT, IRATED ADC
OUTPUT RIPPLE/NOISE,
MVP-P
2
TYPICAL EFFICIENCY
@ IRATED & 36VIN
1.
QMS25DE
QMS14DG
QMS07DH
18 - 60
18 - 60
18 - 60
6.0
4.3
5.0
3.3
5.0
12.0
25
14
6.75
50
50
120
90%
92%
92%
This product is intended for integration into end-use equipment. All the required procedures for CE marking of end-use equipment should
be followed.
Model numbers highlighted in yellow are not recommended for new designs.
2.
Stresses in excess of the absolute maximum ratings may cause performance degradation, adversely effect long-term reliability, and
cause permanent damage to the converter.
PARAMETER
Input Voltage
Transient Withstand (100 ms)
Hot Spot Monitor Location
3
(Tc)
Operating Temperature
Ambient
Storage Temperature
ON/OFF Control Voltage
Ambient
Referenced to -Vin
QMS25DE
Output Power
4
QMS14DG
QMS07DH
-40
-40
-0.7
85
125
20
82.5
70
81
-40
100
125
VDC
C
C
C
VDC
W
W
W
CONDITIONS/DESCRIPTION
Continuous
MIN
0
MAX
60
UNITS
VDC
3.
PARAMETER
Operating Humidity
Storage Humidity
Shock
Sinusoidal Vibration
Weight
Water Washing
MTBF (Calculated)
Dimensions
Markings & Labeling
Standard process
Per Telcordia SR-332 Issue 1, (method 1, case 2, GB, 40OC)
(Overall)
Includes P/N, Logo, Date Code, Country of Manufacture
CONDITIONS/DESCRIPTION
Relative Humidity, Non-cond.
Relative Humidity, Non-cond.
(Half-sinewave, 6 ms), 3 axes
GR-63-CORE, Section 5.4.2
MIN
NOM
MAX
95
95
UNITS
%
%
g
g
50
1
1.2/35
Yes
1,750
2.28 (57.9) x 1.45 (36.8)
x 0.43 (11)
Oz/g
kHrs
In. (mm)
1
2
@ V
IN
minimum.
Nominal, (DC to 500 kHz)
3
See temperature probe location T
C
, Figure 36. [Ref.V09 case]
4
With appropriate power derating, see Figures 37 – 42.
tech.support@psbel.com
QMS Series
4.
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted.
PARAMETER
Insulation Safety Rating
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Input to Output
Input to Output
Input to Output
1500
10
4700
3
CONDITIONS/DESCRIPTION
MIN
NOM
Basic
MAX
UNITS
VDC
M
Ω
pF
5.
SAFETY AGENCY
UL
TUV product service
CB report
Declaration of Conformity
Conducted Emissions
5
STANDARD APPROVED TO:
UL60950-1 / CSA C22.2 No. 60950-1-03
TUV EN60950-1/A11:2004
IEC60950-1:2001
DIR 73/23/EEC Low Voltage Directive
(with external EMI filter)
MARKING
cURus
TUV PS Baurt mark
N/A
CE
CISPR 22 class A
6.
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted.
PARAMETER
Input Voltage
Turn-On Input Voltage
(UVLO)
6
Turn-Off Input Voltage
6
Turn-Off Hysteresis
Input Reflected Ripple
Current
No-load Input Current
No-load Power Dissipation
Disabled Input Current
Input Capacitance (internal)
Minimum Input
Capacitance (external)
Inrush Transient
(ESR <0.7
Ω)
100
0.1
@ IRATED, 12µH source inductance
BW=20MHz
7
18VDC < Vin < 60VDCc
Vin = 36VDC
18VDC < Vin < 60VDC
25
CONDITIONS/DESCRIPTION
Continuous
Ramping Up
Ramping Down
MIN
18
16
13
2
NOM
MAX
60
UNITS
VDC
VDC
VDC
VDC
17
15
18
16.5
10
90
72
150
5
50
1.4
mAP-P
mA
W
mA
µF
µF
A2s
5
See figures 43, 44, 45
6
See Figure 2
7
Vin = 36Vin, see Figure 1 and 47
Asia-Pacific
+86 755 298 85888
Europe, Middle East
+353 61 225 977
North America
+1 408 785 5200
BCD.00837_AA
© 2016 Bel Power Solutions & Protection
4
QMS Series
7.
All specifications apply over specified input voltage, output load, and @ 40 OC ambient temperature, unless otherwise noted.
PARAMETER
Output Voltage (Set-point)
Line Regulation
CONDITIONS/DESCRIPTION
Vin = 36V, Io =25A
Vi =18V to 60V, Io =50% Io.max
MIN
3.25
NOM
3.30
MAX
3.35
10
0.3
25
0.75
0.02
UNITS
VDC
mV
%
mV
%
%/C
VDC
%
W
A
%Iomax
mVP-P
%
mVRMS
Load Regulation
Temperature Coefficient
Total Error Band
Output Power
8
Output Current
8
Output Current Limit
Threshold
Vin =36V, Io.min to Io.max
-40
C
< TAMB < +85
C
(Line, Load, Temperature, Ripple, Life)
w/ proper thermal derating
w/ proper thermal derating
Vin = 36 V, Vo < 90%Vonom
-40
C
< TAMB < +85
C
0
125
50
3.12
3.48
+/- 5.5
82.5
25
150
100
3.0
35
Output Ripple
9
Over line and load,
(DC to 20 MHz)
1.5
17
Dynamic Regulation
10
Peak Deviation
Settling Time
Peak Deviation
Settling Time
Efficiency
11
(TAMB=40C)
Turn-on Overshoot
12
Turn-On Time
75-100-75% load step change,
to 1% error band, Co=0 µF
Slew = 1.0A/s >>>
Slew = 0.1A/s >>>
Vin NOM, IO = IRATED
Overall input voltage, load,
and temperature conditions
Time from Vin=UVLO to
Time from enable to
From 10 to 90% of VoutNOM
Irated, Nom Vin
330
90% of VoutNOM
90% of VoutNOM
2
+/-165
500
+/-165
500
90
5
10
50
1
+/-330
1,000
+/-330
1,000
mV
s
mV
s
%
10
150
250
2
8,220
%Vout
ms
ms
ms
F
kHz
Turn-On Time
Rise Time
12
Admissible Load
Capacitance
14
Switching Frequency
f
(VIN)
12
f
(On/Off)
13
300
8
see
9
10
Figures 37 and 40
see Figure 18 for ripple waveform and Figure 46 for measurement method
see Figures 12 and 15
11
see Figure 3
12
see Figure 6
13
see Figure 9
14
A minimum 330 µF (AVX, TPSD337K006R0045) is recommended for operation over full load, line and temperature range
tech.support@psbel.com
QMS Series
5
PARAMETER
Output Voltage (Set-point)
Line Regulation
CONDITIONS/DESCRIPTION
Vi = 36 V, Io =14 A
Vi =18 V to 60 V, Io =50% Io.max
MIN
4.925
NOM
5.0
MAX
5.075
15
0.3
25
UNITS
VDC
mV
%
mV
%
%/C
VDC
%
W
A
%Iomax
mVP-P
%
mVrms
Load Regulation
Temperature Coefficient
Total Error Band
Output Power
15
Output Current
15
Output Current Limit Threshold
Vi =36V, Io.min to Io.max
0.5
-40
C
< TAMB < +85
C
4.76
(Line, Load, Temperature, Ripple, Life)
+/- 4.8
w/ proper thermal derating
w/ proper thermal derating
Vin = 36 V, Vo < 90%Vonom
-40
C
< TAMB < +85
C
0
120
50
70
14
160
120
2.4
42
0.02
5.24
Output Ripple
16
Over line and load,
(DC to 20 MHz)
1.0
17
Dynamic Regulation
17
Peak Deviation
Settling Time
Peak Deviation
Settling Time
Efficiency
18
(TAMB=40C)
Turn-on Overshoot
19
Turn-On Time
Turn-On Time
Rise Time
19
Admissible Load Capacitance
21
Switching Frequency
75-100-75% load step change,
to 1% error band, Co=0 µF
Slew = 1.0A/s >>>
Slew = 0.1A/s >>>
+/-
250
500
+/-
250
500
92
5
+/-500
1,000
+/-500
1,000
mV
s
mV
s
%
VinNOM, IO = IRATED
Overall input voltage, load,
and temperature conditions
Time from Vin=UVLO to
Time from enable to
From 10 to 90% of VoutNOM
IRATED, Nom Vin
220
90% of VoutNOM
90% of VoutNOM
2
10
150
250
6
4,600
%Vout
ms
ms
ms
F
kHz
f
(VIN)
19
f
(On/Off)
20
10
50
3
330
15
16
see Figures 38 and 41
see Figure 19 for ripple waveform and Figure 46 for measurement method.
17
see Figures 13 and 16
18
see Figure 4
19
see Figure 7
20
see Figure 10
21
A minimum 220 µF (AVX, TPSD227K010R0050) is recommended for operation over full load, line and temperature range.
Asia-Pacific
+86 755 298 85888
Europe, Middle East
+353 61 225 977
North America
+1 408 785 5200
BCD.00837_AA
© 2016 Bel Power Solutions & Protection
