SIS12VA [BEL]
DC-DC Regulated Power Supply Module, 1 Output, Hybrid;
| 型号： | SIS12VA |
| 厂家： | 
BEL FUSE INC. |
| 描述： | DC-DC Regulated Power Supply Module, 1 Output, Hybrid |
| 文件： | 总7页 (文件大小：367K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SIS12V DC-DC Series Preliminary Data Sheet
Features
•
•
•
•
•
•
Through-hole mount configuration
Single output
Efficiency in excess of 90%
Output overcurrent protection
Remote On/Off
Output voltage trim
Description
The SIS12V Series converters are through-hole mount, low cost, non-isolated, single-output DC-DC converters.
The products provide point-of-load conversion of a single 5V input voltage into a regulated low output voltage with
up to 12A of output current. The converters also feature remote On/Off and output trim functions. High efficiency,
low cost, high reliability and a board-saving vertical mounting option make these converters an excellent choice for
powering ASICs in a distributed power architecture.
Model Selection
Efficiency (%)
Model
SIS12VE
SIS12VD
SIS12V2.1
SIS12VB
SIS12VA
SIS12VY
Input Voltage (VDC)
4.5-5.5
Output Voltage (VDC)
Typical at Io, rated
3.3
2.5
2.1
1.8
1.5
1.2
86
85
84
84
83
82
4.5-5.5
4.5-5.5
4.5-5.5
4.5-5.5
4.5-5.5
NOTE: Model numbers highlighted in yellow or shaded are not recommended for new designs.
REV. FEB 06, 2004
Page 1 of 7
SIS12V DC-DC Series Preliminary 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
Min
4.5
Max
5.5
Units
VDC
°C
Operating Temperature
Full Load
-40
+55
(Note 1)
-40
Storage Temperature
+125
5.5
°C
VDC
ON/OFF Control Voltage
Referenced to GND
Environmental and Mechanical Specifications
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted.
Parameter
Shock
Conditions/Description
Halfsine wave, 3 axes
Min
50
1
Nom
Max
Units
g
Sinusoidal Vibration
Weight
Water Washing
MTBF
GR-63-Core, Section 5.A.2
0.2/5.7
Yes
5.4
oz/g
Standard process
Per Bellcore TR-NWT-
000332
MHrs
Isolation Specifications
The SIS12V Series does not provide input-to-output isolation.
Input Specifications
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted.
Parameter
Conditions/Description
Min
Nom
5.0
Max
Units
VDC
VDC
VDC
ms
Input Voltage (continuous)
Turn-On Input Voltage
Under Voltage Lock out
Turn-On Time
4.5
5.5
4.3
4.19
15
To Output Regulation Band
100% Resistive Load
Vin=Vin.max. Io=12A
ESR < 0.1 Ohm
12
Inrush Transient
0.04
A2s
External Capacitor (required)
100
(Note 1)
µF
NOTES: (1) A minimum TBD µF input tantalum capacitor is needed to operate the converters down to –40°C. For 0°C and above operation,
a 100µF input tantalum capacitor is recommended near the input pin of the unit to enhance the performance, although the unit will not be
damaged (by the input ripple current) without the capacitor.
REV. FEB 06, 2004
Page 2 of 7
SIS12V DC-DC Series Preliminary Data Sheet
Output Specifications
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted.
Parameter
Conditions/Description
Min
-1.0
Nom
Max
1.0
12
Units
%Vout
ADC
Output Voltage Set Point Accuracy
Output Current Range
Vin.nom, 50% Load
0
(Note 2)
Line Regulation
Load Regulation
Vin.min to Vin max at Iout.max
At Vin nom, Iout.0A to 12A
0.5
0.5
3.0
%Vout
%Vout
%Vout
Total output voltage regulation
Over all input voltage, load,
and temperature conditions
Dynamic Regulation:
Peak Deviation
Settling Time
50-25-50% load step change
20
30
50
200
mVp-p
µs
Admissible Load Capacitance
Vin nom, Iout.max
2000
115
µF
%Iout
Output Current Limit Threshold
(Note 3)
Vout≤0.95Vout.nom
140
Switching Frequency
Temperature Coefficient
Output Ripple and Noise
250
300
340
0.01
40
100
110
kHz
%/°C
mVrms
mVp-p
%Vout
µF
Vin nom, Iout.max
25
60
Trim Range
Vin nom, Iout.max
TBD
90
External Capacitor (required) (Note
4)
TBD
Feature Specifications
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted.
Parameter
Shutdown (ON/OFF)
Logic Low
Conditions/Description
Min
Nom
Max
Units
On/Off signal low – converter is OFF
0
0.5
VDC
Logic High or floating
On/Off signal high or floating–
converter is ON
Vin_ min
Vin_max
Open circuit voltage
Vin
NOTES: (2) At Iout.min, the output may contain low frequency component that exceeds ripple specifications.
(3) Current foldback at constant-current load with self-recovery.
(4) External capacitor to enhance stability; type of capacitor depends on the life required.
REV. FEB 06, 2004
Page 3 of 7
SIS12V DC-DC Series Preliminary Data Sheet
Characteristic Curves
(To Be Added)
(To Be Added)
Figure 1. SIS12VE Efficiency vs. Output Load
Figure 4. SIS12VB Efficiency vs. Output Load
SIPS0521012. EFF. VS. LOAD RESPONSE
100
98
96
94
92
90
88
86
84
82
80
Figure 5. SIS12V2.1 Turn-On Waveforms
10
20
30
40
50
LOAD %
60
70
80
90
100
EFF.(4.5V)
EFF.(5V)
EFF.(5.5V)
Figure 2. SIS12V2.1 Efficiency vs. Output Load
(To Be Added)
(To Be Added)
Figure 3. SIS12VD Efficiency vs. Output Load
Figure 6. SIS12VB Turn-On Waveforms
REV. FEB 06, 2004
Page 4 of 7
SIS12V DC-DC Series Preliminary Data Sheet
coupler directly at the module will solve any of these
problems.
Typical Application
Output Voltage Trim
Figure 7 shows the recommended connections for
the SIS12V Series converter.
The trim feature allows the user to adjust each of the
output voltages by 10% from the nominal. 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
Output
Vin+
C2
Vo+
Vin+
ON/OFF
100uF
10V
SIS12VX
1000uF
6V
The Trim Function
Vin-
Vo-
The trim mechanism (see notes 5, 6) for the SIS12V
Series is a negative one. The output is trimmed up
with a resistor from the TRIM pin to the GND pin and
trimmed down with a resistor from the TRIM pin to
the respective +Vout pin.
C1
Figure 7. Typical Application of SIS12V Series
It is recommended that a minimum of a 100µF
capacitor with an ESR <0.1Ω and a TBD capacitor
with ESR < TBD be used across the input and
output, respectively, of the SIS12V Series converters
to ensure optimized performance.
Vo
R
trim,down
TRIM
If the magnitude of the inrush current needs to be
limited, see the “Inrush Current Control Application
Note” on www.power-one.com.
R
trim,up
Shutdown Feature Description
The ON/OFF pin in the SIS12V Series converters
functions as a normal soft shutdown. It is referenced
to the GND pin (see Figure 8). When the ON/OFF
pin is pulled low to within 0.5Vdc reference to the
ground, the output is turned off and the unit goes into
a very low input power mode.
Figure 8. SIS12V Trip Up/Down Schematic
The general equation for trimming the output voltage
on the output as shown below:
Rtrim,up =
Rtrim,down = TBD
TBD
kOhm
kOhm
When the pin is left floating or pulled high to Vin, the
unit is ON and operates normally.
NOTES: (5) When the output voltage is trimmed up, the output
power from the converter must not exceed its maximum rating.
This is determined by measuring the output voltage on the output
pins and multiplying it times the output current.
(6) In order to avoid creating apparent load regulation
degradation, it is important that the trim resistors are connected
directly to the Vout and output GND pins, and not to the load or to
traces going to the load.
An open collector switch is recommended to control
the voltage between the ON/OFF pin and the GND
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.
When the ON/OFF pin is used to achieve remote
control, the user must take care to ensure that the
pin reference for the control is really the GND 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
REV. FEB 06, 2004
Page 5 of 7
SIS12V DC-DC Series Preliminary Data Sheet
Safety Considerations
Thermal Considerations
The SIS12V Series converters do not provide
isolation from input to output. Relevant isolation
requirements according to all IEC60950 based
standards must be provided by the input devices to
the SIS12V Series module. 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
The SIS12V Series converters are designed for
natural or forced convection cooling. The output
power of the converters is determined by the
maximum semiconductor junction temperature. To
provide reliable long-term operation of the
converters, Power-One limits maximum allowable
junction temperature to 120°C.
The graphs in Figures 9-11 show the maximum
output current of the SIS12V Series converters at
different local ambient temperatures at both natural
and forced (longitudinal airflow direction, from pin 3
to pin 1) convection.
safety requirements must be observed.
These
documents include UL60950 - CSA60950-00 and
EN60950, although specific applications may have
other or additional requirements.
The SIS12V Series converters have no internal
fuse. An external fuse must be provided to protect
the system from catastrophic failure. A fuse with a
rating not greater than 10A, 125V is recommended.
The user can select a lower rating fuse based upon
the inrush transient and the maximum input current
of the converter, which occurs 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.
(To Be Added)
Figure 9. SIS12VE Derating Curves
(To Be Added)
Figure 10. SIS12VD Derating Curves
(To Be Added)
In order for the output of the SIS12V Series
converter to be considered as SELV (Safety Extra
Low Voltage), according to all IEC60950 based
standards, the input to the module needs to be
supplied by an isolated secondary source providing a
SELV also.
Figure 11. SIS12V2.1 Derating Curves
REV. FEB 06, 2004
Page 6 of 7
SIS12V DC-DC Series Preliminary Data Sheet
Mechanical Drawing
Dimensions shown in inches (millimeters)
Tolerances:
.xx 0.020” (0.5mm)
.xxx 0.010” (0.25mm)
P i n
1
F u n c ti o n
V o +
2
V o +
3
4
T rim 2
V o +
5
6
7
8
G N D
G N D
G N D
V in +
9
V in +
1 0
1 1
1 2
V in +
t rim
O N /O F F
(a). Horizontal Mount Option
(b). Vertical Mount Option
Note:
Consult factory for the complete list of available options.
NUCLEAR AND MEDICAL APPLICATIONS - 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.
TECHNICAL REVISIONS - 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. FEB 06, 2004
Page 7 of 7
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