Product Brief
TLD Series – 20/25A, ¾-Brick, DC/DC Converter
48V Input
Dual Output
Features
• 85/100 Watt total output power
• Flexible load distribution
• High efficiency
• Output voltage tracking
• Output overcurrent protection
• Output overvoltage protection
• Overtemperature protection
• Remote sense on both outputs
• Set point accuracy ±1.5%
• Independent output voltage trim, positive or
negative
• Input/output isolation: 1500VDC, basic
Applications
• Distributed power architectures
• Telecommunications equipment
• LAN/WAN applications
• Data processing applications
insulation
• UL 1950 recognition, CSA 22.2 No. 950-95
certification, TUV IEC950
Description
The TLD is a series of high-density, 3/4-brick DC/DC converters that provide standard telecom and datacom
input voltage conversion to two independently regulated output voltages. The TLD's leading-edge
technology provides high efficiency. Its thermal design enables delivery of full-rated power at 50°C ambient
temperature with 200 LFM forced air without addition of a heatsink. The outputs also track each other during
both startup and shutdown.
Selection Chart
Model Input
voltage
VDC
TLD20ZGE 36-72 3.6 5.0/3.3 20/20 100 87
TLD25ZED 36-72 3.1 3.3/2.5 25/20 100 86
TLD25ZEB 36-72 3.1 3.3/1.8 25/20 100 85
Input
current,
max, ADC
Output
voltages
VDC
Output
currents
ADC
Output
ripple/noise
(mV p-p)
Typical
efficiency
%
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Product Brief
TLD Series – 20/25A, ¾-Brick, DC/DC Converter
48V Input
Dual Output
Mechanical Drawing
Pin#Function
1-Vin
2On/Off
3No Pin
4+Vin
5 +Vout 1
6+Sense 1
7Trim 1
8-Sense 1
9 -Vout 1
10 -Vout 2
11 -Sense 2
12 Trim 2
13 +Sense 2
14 +Vout 2
Bottom (Pin) View Side View
Tolerances: .xx ± 0.020 (0.5)
.xxx ± 0.010 (0.25)
Pin diameter ± 0.002 (0.05)
Ordering Information
Options Suffixes to add to part number
Positive- Standard, no suffix requiredRemote On/Off
Negative- Add “N” suffix
Pin Length
0.18”- Standard, no suffix required
0.11”- Add “8” suffix
0.15”- Add “9” suffix
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 President of Power-One, Inc.
3. Specifications are subject to change without notice.
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