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参数资料
| 型号： | TWR-5/3000-15/500-D12A-C |
| 厂商： | CD TECHNOLOGIES INC |
| 元件分类： | 电源模块 |
| 英文描述： | 3-OUTPUT 20 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT PACKAGE-8/7 |
| 文件页数： | 3/8页 |
| 文件大小： | 866K |
| 代理商： | TWR-5/3000-15/500-D12A-C |
MDC_TWR20W.A03 Page 3 of 8
TWR A-Series
20W, Triple Output DC/DC Converters
P O W E R E L E C T R O N I C S D I V I S I O N
D C / D C C O N V E R T E R S
www.cd4power.com
Absolute Maximum Ratings
Performance/Functional Specifications
Typical @ TA = +25°C under nominal line voltage and "full-load" conditions, unless noted.
These converters require 0% min. loading on their primary output and 20% min.
loading on their auxiliary outputs to maintain specified regulation. Operation under no-load
conditions will not damage the devices; however they may not meet all listed specifications. For
testing and specification purposes, "full load" is defined as 2.75A on the primary +5V output and
±250/200mA on the auxiliary ±2/5V outputs. This corresponds to a total output power of 9.75W.
Application-specific internal input/output filtering can be recommended or perhaps added
internally upon request. Contact C&D Applications Engineering for details.
Applying a voltage to the Control pin when no input power is applied to the converter can
cause permanent damage to the converter.
D48A models have BASIC, D2A models have Functional insulation.Devices can be screened
or modified for higher guaranteed isolation voltages. Contact C&D Applications Engineering
for details.
To avoid damage to the surface finish, please do not use certain cleaning agents such as Vigon.
Contact C&D Technologies for information.
Input
Input Voltage Range:
D2A Models
9-36 Volts (24V nominal)
D48A Models
8-75 Volts (48V nominal)
Input Current
See Ordering Guide
Input Filter Type
Pi
Overvoltage Shutdown:
D2A Models
40 Volts
D48A Models
80 Volts
Reverse-Polarity Protection
Yes (Instantaneous, 6A maximum)
On/Off (Sync.) Control (Pin 4)
TTL high = off, low (or open) = on
Output
Total Output Power
20W max., sum of all outputs
VOUT Accuracy (50% loads):
+5V Output
±%
±2V or ±5V Outputs
±3%
Temperature Coefficient
±0.02% per °C
Ripple/Noise (20MHz BW)
See Ordering Guide
Line/Load Regulation
See Ordering Guide
Efficiency
See Ordering Guide
Isolation Voltage
500Vdc, minimum
Isolation Capacitance
500pF
Current Limiting
Power down to restart
Short Circuit Protection at 25C
5 min. max, 5V output
30 sec max.2/5V outputs
Overvoltage Protection
Zener/transorb clamps, magnetic feed-
back
Dynamic Characteristics
Transient Response (50% load step)
300sec max. to ±2% of final value
Switching Frequency
65kHz (±5kHz)
Environmental
Operating Temperature (ambient):
Without Derating
–40 to +55°C
With Derating
to +00°C (See Derating Curve)
Storage Temperature
–40 to +05°C
Physical
Dimensions
2" x 2" x 0.45" (5 x 5 x .4mm)
Shielding
5-sided
Case Connections:
D2A Models
Pin 2 (–VIN)
D48A Models
Pin (+VIN)
Case Material
Corrosion resistant steel with
non-conductive, epoxy-based, black
enamel finish and plastic baseplate
Pin Material
Copper alloy with gold plate over nickel
underplate
Weight
2.7 ounces (77 grams)
Input Voltage:
"D2" Models
44 Volts
"D48" Models
88 Volts
Input Reverse-Polarity Protection
Current must be <6A. Brief
duration only. Fusing recommended.
Output Overvoltage Protection
+5V Output
6.8 Volts, limited duration
±2V Outputs
±5 Volts, limited duration
±5V Outputs
±8 Volts, limited duration
Output Current
Current limited.
Max. currents are
model dependent.
Storage Temperature
–40 to +05°C
Lead Temperature (soldering, 0 sec.)
+300°C
These are stress ratings. Exposure of devices to any of these conditions may adversely
affect long-term reliability. Proper operation under conditions other than those listed in
the Performance/Functional Specifications Table is not implied.
Filtering and Noise Reduction
All A-Series TWR 20 Watt DC/DC Converters achieve their rated ripple and
noise specifications without the use of external input/output capacitors. In
critical applications, input/output noise may be further reduced by installing
electrolytic capacitors across the input terminals and/or low-ESR tantalum or
electrolytic capacitors across the output terminals. Output capacitors should
be connected between their respective output pin (pin 5, 6 or 8) and Common
(pin 7). The caps should be located as close to the power converters as
possible. Typical values are listed below. In many applications, using values
greater than those listed will yield better results.
To Reduce Input Ripple
D2A Models
20F, 50V
D48A Models
0F, 00V
To Reduce Output Ripple
+5V Output
47F, 0V, Low ESR
±2/5V Outputs
33F, 20V, Low ESR
In critical, space-sensitive applications, C&D may be able to tailor the internal
input/output filtering of these units to meet your specific requirements. Con-
tact our Applications Engineering Group for additional details.
Input Fusing
Certain applications and/or safety agencies may require the installation of
fuses at the inputs of power conversion components. For C&D A-Series TWR
20 Watt DC/DC Converters, you should use slow-blow type fuses with values
no greater than 4A for "D2A" models and 2A for "D48A" models.
On/Off Control
The On/Off Control pin (pin 4) may be used for remote on/off operation. A TTL
logic high (+2 to +5 Volts, 250A max.) applied to pin 4 disables the converter.
A TTL logic low (0 to +0.8 Volts, 70A max.), or no connection, enables the
converter. Control voltages should be referenced to pin 2 (–Input). Applying a
voltage to the Control pin when no input power is applied to the converter can
cause permanent damage to the converter.
Technical Notes
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