Q2S15YG-NC3 [BEL]
DC-DC Regulated Power Supply Module, 1 Output, Hybrid;
| 型号： | Q2S15YG-NC3 |
| 厂家： | 
BEL FUSE INC. |
| 描述： | DC-DC Regulated Power Supply Module, 1 Output, Hybrid |
| 文件： | 总9页 (文件大小：167K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Q2S15 Series – 15A Quarter-Brick DC/DC Converter
48V, 24V Input
5.0V Output
Data Sheet
Features
•
•
Low profile ( < 8mm )
2000 VDC input-to-output isolation meets
basic insulation
•
•
•
•
•
•
•
•
•
•
High efficiency - to 88% at full load
Start-up into high capacitive load
Low conducted and radiated EMI
Output overcurrent protection
Output overvoltage protection
Overtemperature protection
Back drive protection
Remote sense
Set point accuracy ± 1%
Remote on/off (primary referenced),
positive or negative logic
Applications
•
•
Output voltage trim adjust, positive, or
negative
UL 1950 Recognized, CSA 22.2 No. 950-
95 certified, TUV IEC9
• Distributed power architectures
• Telecommunications equipment
• LAN/WAN applications
• Data processing applications
Description
The new Q2S15 series of low profile, high-density, single-output DC/DC converters convert standard
telecom and datacom voltages into isolated low-voltage outputs. The Q2S’s leading-edge technology
provides high efficiency. The SMT mounting option eliminates the need for a separate (additional manual)
process in attaching the converters to the motherboards during mass production.
Base Model Selection Chart
Model
Input
voltage
range,
VDC
36-75
18-36
Input
current,
max,
ADC
1.5
Output
voltage,
Output rated
current,
I rated
ADC
Output
Ripple /
Noise, Typ,
mV p-p
30
Efficiency
@ I rated,
Typical,
%
VDC
5.0
5.0
Q2S15ZG
Q2S15YG
15
15
88
88
4.7
30
Location of the Thermocouple for Thermal Testing.
REV. JUN 12, 2002
Page 1 of 9
Q2S15 Series – 15A Quarter-Brick DC/DC Converter
48V, 24V Input
5.0V Output
Data Sheet
Absolute Maximum Ratings
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
Conditions/Description
Continuous
Per GR-513, tp = 10µs
At 100% load
Min
Max
75
100
100
125
20
Units
VDC
VDC
°C
°C
Operating Temperature
Storage Temperature
ON/OFF Control Voltage
-40
-40
Referenced to -Vin
VDC
Environmental and Mechanical Specifications
All specifications apply over specified input voltage, output load and temperature range, unless otherwise
noted.
Parameter
Shock
Sinusoidal Vibration
Weight
Conditions/Description
Halfsine wave, 3 axes
GR-63-Core, Section 5.A.2
Min
50
1
Nom
Max Units
g
1.02(28)
Yes
Consult factory
Oz/g
kHrs
Water Washing
MTBF
Standard process
Per Bellcore TR-NWT-000332
Isolation Specifications
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise
noted.
Parameter
Conditions/Description
Min
Nom
Max
Units
Insulation Safety Rating
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Basic
2000
10
VDC
MΩ
pF
230
Input Specifications
All specifications apply over specified input voltage, output load and temperature range, unless otherwise
noted.
Parameter
Conditions/Description
Min
Nom
Max
Units
Input Voltage
Continuous
36
18
33
16
31
15
48
24
75
36
35
17.5
33
VDC
Turn-On Input Voltage
Turn-Off Input Voltage
Turn-On Time
Ramping Up Vin= 36-75
Vin = 18 -36
Ramping Down Vin = 36-75
Vin = 18-36
To Output Regulation Band
100% Resistive Load
25 MHz Bandwidth
VDC
VDC
16.5
2.5
6
ms
Input Reflected Ripple Current
Inrush Transient
mApk.pk
A2s
Vin=Vin max
0.1
REV. JUN 12, 2002
Page 2 of 9
Q2S15 Series – 15A Quarter-Brick DC/DC Converter
48V, 24V Input
5.0V Output
Data Sheet
Output Specifications
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise
noted.
Parameter
Output Voltage Setpoint Accuracy
Output Current*
Conditions/Description
Vin=Vin nom, Full Load
Min
-1
0
Nom
Max
1
15
±5
Units
%Vout
ADC
mV
Line Regulation
Vin min to Vin max,
Iout max
Vin=Vnom, Iout min to
Iout max
±2
±2
Load Regulation
±5
mV
Total Output Voltage Regulation
Over all input voltage, load,
and temperature conditions
4.925
5.000
5.075
10%
Vdc
%Vout
Remote Sense Headroom***
Dynamic Regulation
Peak Deviation
50-75% load step change
120
100
mV
µS
µF
Adc
kHz
%Vout
Settling Time
to 1% error band
Iout.max, Nom Vin
Vout ≤0.97Vout nom
Admissible Load Capacitance
Output Current Limit Threshold**
Switching Frequency
Over voltage Protection,
Non Latching
10,000
20
16.5
115
-20
18
435
122
Over all input voltage and
load conditions
127
+10
Trim Range****
Iout max, Vin=Vnom
%Vout
** Overcurrent protection is non-latching with auto recovery.
*** Vout can be increased up to 10% via the sense leads or up to 10% via the trim function, however total
output voltage trim from all sources should not exceed 10% of Vout (Nom) in order to insure specified
operation of over-voltage protection circuitry.
Feature Specifications
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise
noted.
Parameter
Shutdown (ON/OFF)
Negative Logic
- Converter ON
- Converter OFF
Positive Logic
- Converter ON
- Converter OFF
Overtemperature
Protection
Conditions/Description
Min
Nom
Max
Units
On/Off signal is low – converter is ON
ON/OFF pin is connected to -Vin
-20
2.4
0.8
20
VDC
VDC
On/Off signal is low –converter is OFF
ON/OFF pin is connected to -Vin
2.4
-20
20
0.8
VDC
VDC
°C
PCB Temperature
118
REV. JUN 12, 2002
Page 3 of 9
Q2S15 Series – 15A Quarter-Brick DC/DC Converter
48V, 24V Input
5.0V Output
Data Sheet
converter.
Note, that the capacitors do not
Characteristic curve
substitute the filtering required by the load.
0.95
0.90
0.85
0.80
0.75
0.70
0.65
Shutdown Feature Description
The ON/OFF pin in the Q2S15 series converters
functions as a normal soft shutdown.
It is
referenced to the –Vin pin (see Figure 2). With
positive logic, when the ON/OFF pin is pulled low,
the output is turned off and the unit goes into a
very low input power mode. With negative logic,
when the ON/OFF pin is pulled low, the unit is
turned on.
72 V
54 V
36 V
An open collector switch is recommended to
control the voltage between the ON/OFF pin and
the -Vin pin of the converter. The ON/OFF pin is
pulled up internally, so no external voltage source
is required. The user should avoid connecting a
resistor between the ON/OFF pin and the +Vin
pin.
0
2
4
6
8
10
12
14
16
Load Current [Adc]
Fig. 1. Q2S15ZG (5.0V) Efficiency vs. Load
Typical Application
Figure 2 shows the recommended connections for
the Q2S15 series converter.
When the ON/OFF pin is used to achieve remote
control, the user must take care to insure that the
pin reference for the control is really the -Vin pin.
The control signal must not be referenced ahead
of EMI filtering or remotely from the unit. Optically
coupling the information and locating the optical
coupler directly at the module will solve any of
these problems.
Note:
If the ON/OFF pin is not used, it can be left
floating (positive logic), or connected to the -Vin
pin (negative logic).
Fig. 2. Typical Application of Q2S15 Series
The Q2S15 series converters do not require any
external components for proper operation.
However, if the distribution of the input voltage to
the converter contains significant inductance, a
capacitor may be required to enhance
performance of the converter. A minimum of a
100µF electrolytic capacitor with the ESR<0.7Ω is
recommended for the Q2S15 series.
Output Voltage Trim
The trim feature allows the user to adjust the
output voltage from the nominal value. This can
be used to compensate distribution drops,
perform margining in production, or accommodate
other requirements when output voltage needs to
be adjusted from the nominal.
If magnitude of the inrush current needs to be
limited, see the “Inrush Current Control
Application Note” on the Power-One website at
www.power-one.com.
The converter’s output voltage (at the terminals)
can be adjusted up 10% or down 20% relative to
the nominal output voltage by connecting the
TRIM pin to sense (+) or sense (-) via a trim
resistor. The Trim pin should be left open if the
trimming function is not to be used.
For output decoupling we recommend using a
10μF tantalum and a 1μF ceramic capacitor
connected directly across the output pins of the
To trim up the output voltage, a trim resistor, RT-
INCR, should be connected between TRIM (Pin 6)
REV. JUN 12, 2002
Page 4 of 9
Q2S15 Series – 15A Quarter-Brick DC/DC Converter
48V, 24V Input
5.0V Output
Data Sheet
and SENSE(+) (Pin 7), as illustrated in Fig. 3.
The trim-up resistor can be calculated from:
Fig. 3.
5.1(100+Δ)VO-NOM – 624.75
__________________________________
RT-INCR
=
- 10.2 [KΩ]
1.225 Δ
where,
T-INCR = Required value of trim-up resistor
R
VO-NOM = Nominal value of output voltage
insert absolute value bars
VO-REQ - VO-NOM
_________________________
Δ =
x 100
[%]
VO-NOM
VO-REQ = Desired (trimmed) output voltage
When trimming up, care must be taken not to
exceed the converter‘s maximum allowable output
power, as discussed in the previous section
Remote Sense.
To trim down the output voltage, a trim resistor,
R
T-DECR, should be connected between TRIM (Pin
6) and SENSE(-) (Pin 5), as illustrated in Fig.4.
Fig. 4.
The trip-down resistor can be calculated from:
510
____________
RT-DECR
=
- 10.2
[KΩ]
Δ
where,
R
T-DECR =. Required value of trim-down resistor
and Δ is as defined above.
REV. JUN 12, 2002
Page 5 of 9
Q2S15 Series – 15A Quarter-Brick DC/DC Converter
48V, 24V Input
5.0V Output
Data Sheet
Start-up Information (using negative ON/OFF)
Scenario #1: Initial Start-up From Bulk Supply
ON/OFF function enabled, converter started via
VIN
application of VIN. See Figure 5.
Time
Comments
t0
ON/OFF pin is ON; system front end power
is toggled on, VIN to converter begins to rise.
VIN crosses Under-Voltage Lockout
protection circuit threshold; converter
enabled.
ON/OFF
STATE
t1
OFF
ON
t2
t3
Converter begins to respond to turn-on
command (converter turn-on delay).
Converter VOUT reaches 100% of nominal
value.
VOUT
For this example, the total converter start-up time (t3- t1)
is typically 2.5 ms.
t
t0
t1 t2
t3
Scenario #2: Initial Start-up Using ON/OFF Pin
With VIN previously powered, converter started via
ON/OFF pin. See Figure 6.
Fig.5. Start-up Scenario #1.
VIN
Time
t0
t1
Comments
VINPUT at nominal value.
Arbitrary time when ON/OFF pin is enabled
(converter enabled).
t2
t3
End of converter turn-on delay.
Converter VOUT reaches 100% of nominal
value.
ON/OFF
STATE
OFF
ON
For this example, the total converter start-up time (t3- t1)
is typically 2.5 ms.
Scenario #3: Turn-off and Restart Using ON/OFF
Pin
With VIN previously powered, converter is disabled and
then enabled via ON/OFF pin. See Figure 7.
VOUT
Time
Comments
t0
VIN and VOUT are at nominal values; ON/OFF
pin ON.
t
t0
t1 t2
t3
t1
ON/OFF pin arbitrarily disabled; converter
output falls to zero; turn-on inhibit delay
period (100 ms typical) is initiated, and
ON/OFF pin action is internally inhibited.
ON/OFF pin is externally re-enabled.
If (t2- t1) ≤ 100 ms, external action of
ON/OFF pin is locked out by start-up
inhibit timer.
Fig. 6. Start-up Scenario #2.
VIN
t2
If (t2- t1) > 100 ms, ON/OFF pin action is
internally enabled.
Turn-on inhibit delay period ends. If ON/OFF
pin is ON, converter begins turn-on; if off,
converter awaits ON/OFF pin ON signal; see
Figure 8.
100 ms
ON/OFF
STATE
OFF
ON
t3
t4
t5
End of converter turn-on delay.
Converter VOUT reaches 100% of nominal
value.
VOUT
For the condition, (t2- t1) ≤ 100 ms, the total converter
start-up time (t5- t2) is typically 102.5 ms. For (t2- t1) >
100 ms, start-up will be typically 2.5 ms after release of
ON/OFF pin.
t
t0
t1
t2
t3 t4
t5
Fig. 7. Start-up Scenario #3.
REV. JUN 12, 2002
Page 6 of 9
Q2S15 Series – 15A Quarter-Brick DC/DC Converter
48V, 24V Input
5.0V Output
Data Sheet
including the Q2S15 converter, must pass a
dielectric withstand test for Reinforced
insulation. Design of this type of system
requires expert engineering and under-
standing of the overall safety requirements,
and should be performed by qualified
personnel.
Safety Considerations
The Q2S15 series converters feature 2000 Volt
DC isolation from input to output. The input to
output DC resistance is greater than 10MΩ.
These converters are provided with Basic
insulation between input and output circuits
according to all IEC60950 based standards.
Nevertheless, if the system using the converter
needs to receive safety agency approval, certain
rules must be followed in the design of the
system. In particular, all of the creepage and
clearance requirements of the end-use safety
Thermal Considerations
The Q2S15 series converters are designed for
natural or forced convection cooling.
The
maximum allowable output power of the
converters is determined by meeting the derating
criteria of all electronic components used in the
power supplies. An example of the derating
requirements must be observed.
These
documents include UL60950, CSA60950-00 and
EN60950, although other additional requirements
may be needed for user’s specific applications.
criteria
for
the
semiconductor
junction
temperature is not to exceed 120°C to provide
reliable long-term operation of the converters.
The Q2S15 series converters have no internal
fuse. An external fuse must be provided to
protect the system from catastrophic failure. The
fuse with a rating not greater than 10A is
recommended. The user can select a lower rating
fuse based upon the highest inrush transient at
the maximum input voltage and the maximum
input current of the converter at the minimum
input voltage. Both input traces and the chassis
ground trace (if applicable) must be capable of
conducting a current of 1.5 times the value of the
fuse without opening. The fuse must not be
placed in the grounded input line, if any.
Note:
derating
Please contact Power-One for more
criteria for other components.
The graph in Figure 8 shows the maximum output
current of the Q2S15 series converters at different
ambient temperatures under both natural and
forced (longitudinal airflow direction, from pin 3 to
pin 4) convection. As an example, from Figure
10, the Q2S15ZE operating at 50°C can deliver
up to 15A reliably with 300LFM forced air.
20
15
10
In order for the output of the Q2S15 series
converter to be considered as SELV (Safety Extra
Low Voltage) or TNV-1, according to all IEC60950
based standards, one of the following
requirements must be met in the system design:
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0 LFM (0 m/s)
5
•
•
If the voltage source feeding the module is
SELV or TNV-2, the output of the converter
may be grounded or ungrounded.
If the voltage source feeding the module is
ELV, the output of the converter may be
considered SELV only if the output is
grounded per the requirements of the
standard.
0
20
30
40
50
60
70
80
90
Ambient Temperature [°C]
Fig. 8. Q2S15ZG (5.0V) Derating Curves
•
If the voltage source feeding the module is a
Hazardous Voltage Secondary Circuit, the
voltage source feeding the module must be
provided with at least basic insulation
between the source to the converter and any
hazardous voltages.
The entire system,
REV. JUN 12, 2002
Page 7 of 9
Q2S15 Series – 15A Quarter-Brick DC/DC Converter
48V, 24V Input
5.0V Output
Data Sheet
MECHANICAL DRAWING Inches (mm)
Surface Mount
Through Hole
PIN CONNECTIONS
PIN
1
2
FUNCTION
Vin (+)
Remote ON/OFF
Vin (-)
•
•
Pins 1-3 and 5-7 are • 0.040" (1.02) with •
0.078" (1.98) shoulder
Pins 4 and 8 are •0.062" (1.57) without
shoulder
Pin material: Brass
Pin Finish: Tin/Lead over Nickel
Module Weight: 0.95 oz (27 g)
3
4
5
6
7
8
Vout (-)
Sense (-)
Trim
Sense (+)
Vout (+)
•
•
•
REV. JUN 12, 2002
Page 8 of 9
Q2S15 Series – 15A Quarter-Brick DC/DC Converter
48V, 24V Input
5.0V Output
Data Sheet
ORDERING INFORMATION
Output
Voltage 1
Surface
Mount
Pin
Length
Height
Option
Product
Series
Output
Current
Input
Voltage
ON/OFF
Logic
15
Z
G
-
N
C2
Q2S
M6
M6
Surface
Mount
N
Blank
7
8
0.188”
0.145”
0.110”
See Chart
Below
Negative
G = 5.0VDC
Z = 48Vin
Nom.
Single Output
Quarter-Brick
Format
Not Valid
w/M6
Option
ADC
(Blank)
Y= 24Vin
Nom.
(Blank)
Through
Hole
Not valid w/M6
Option
Positive
Height, Clearance and Pin Options for Through-Hole Versions
HT
CL
PL
(Maximum Height)
(Minimum Clearance)
Pin Length
Pin
Height
Option
Option
+0.000 [+0.00]
-0.038 [- 0.97]
0.303 [7.69]
0.336 [8.53]
0.400 [10.16]
0.500 [12.70]
+0.030 [+0.77]
-0.000 [- 0.00]
0.030 [ 0.77]
0.063 [1.600]
0.127 [3.23]
±0.005
[±0.13]
0.188 [4.77]
0.145 [3.68]
0.110 [2.79]
blank
C2
C3
7
8
C4
0.227 [5.77]
ple: Q2S15ZG-NM6 indicates a 5.0V output model with Negative On/Off logic in a SMT mounting package.
Exam
Notes
1. Consult factory for the complete list of available options.
2. Power-One products are not authorized for use as critical components in life support systems, equipment used in
hazardous environments, or nuclear control systems without the express written consent of the respective divisional
president of Power-One, Inc.
3. The appearance of products, including safety agency certifications pictured on labels, may change depending on the
date manufactured. Specifications are subject to change without notice.
REV. JUN 12, 2002
Page 9 of 9
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