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Input voltage range 36...75V DC
Single 80...100A output
1500V DC I/O electrical strength test voltage
Approvals: cRUus / CE (pending)
High density design in industry standard
3
/
4
brick size (2.4" x 3.45" x 0.5")
100C base plate operation
Highly efficient topology with synchronous
rectifiers
Output voltage trim range 10%
ON/OFF
control
Remote
sense
Basic insulation rating
Selection Chart
Output
U
o nom
I
o nom
[V DC]
[A]
Input voltage
U
i
[V DC]
Rated power
T
A
= 60C
1
P
o nom
[W]
Type
Features
1.2
75
1.5
75
1.8
75
2.5
80
1.2
100
1.5
100
1.8
100
36...75
36...75
36...75
36...75
36...75
36...75
36...75
90 @ 200 lfm
112 @ tbd lfm
135 @ 300 lfm
200 @ tbd lfm
120 @ 300 lfm
150 @ tbd lfm
180 @ 400 lfm
TXS75ZY
TXS75ZA
TXS75ZB
TXS80ZD
TXS100ZY
TXS100ZA
TXS100ZB
Sense, Trim
Enable or
Shut-down
1
U
i nom
25%,
T
Baseplate
=100C, linear air flow, stand alone module
Purpose / Description
The TXS series is a 75 to 100 Amp, open frame, highly efficient, board mountable DC/DC converter.
The low voltage high amperage supplies the next generation of microprocessors, gate arrays and
integrated circuits with reliable power. The TXS series features input undervoltage lockout, plus
overload and overtemperature protection and its input-output voltage combination is ideally suited for
Distributed Power Architectures (DPAs).
Input
Nominal input voltage
U
i nom
48 V DC
Input voltage range
36...75 V DC
Transient voltage withstand
survival
100V/100ms
Efficiency
U
i nom
,
I
o nom
,
T
a
=25C
TXS75ZY, TXS100ZY
typ. 87%
TXS75ZA, TXS100ZA
typ. 88%
TXS75ZB, TXS100ZB
typ. 89%
TXS80ZD
typ. 90%
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Output
Output voltage setting accuracy
U
i nom
, 50 %
I
o nom
,
T
c
= 25C
1%
U
o nom
Minimum load
not required
Static line regulation
U
i min
...
U
i max
,
50%
I
o nom
0.5%
U
o nom
Static load regulation
U
i nom
, 10...100 %
I
o nom
0.5%
U
o nom
Dynamic load regulation
I
o
=25A, d
I
o
/d
t
=2A/s
10%
U
o nom
, 100s
Output voltage ripple and noise
U
i nom
,
I
o nom
, 20 MHz bandwidth
TXS100ZY/TXS100ZA
50 mVpp
TXS100ZB/TXS80ZD
100 mVpp
Start-up time
U
i nom
,
I
o nom
10ms
Protection
Input undervoltage lockout
Turn-on
typ. 33V
Turn-off
typ. 31V
Overload protection
hic-up (self recovery)
110...130%
I
o nom
OVP trip point
continuous limitation, no switch off
125%
U
o nom
Overtemperature
shutdown with automatic restart (thermistor)
typ. 115C
Control
/SD, inverse shutdown input
TTL-compatible, unit disabled when active low (<1.5V)
Trim input for
U
o
0.6V / 20k
90...110%
U
o nom
Safety and EMC
Planned approvals
EN 60950, UL 1950, CSA 22.2 No. 950
I/O insulation
EN60950, base plate floating
Basic
Electric strength test voltage
I/Case, I/O, O/Case
1.5 kV DC
Electrostatic discharge
IEC/EN 61000-4-2, level 3 (contact/air)
4/8 kV, criterion B
Electromagnetic field
IEC/EN 61000-4-3, level 2
3 V/m, criterion A
Electr. fast transients/burst
IEC/EN 61000-4-4, tbd.
tbd., criterion B
Electromagnetic emissions
CISPR 22/EN 55022, conducted (with external filter)
class B
CISPR 22/EN 55022, radiated (with external filter)
class B
Environmental specifications
Operating temperature
T
BP
U
i nom
,
I
o nom
, base plate temperature
-40...100C
Storage temperature
non operational
-40...100C
Damp heat
IEC/EN 60068-2-3, 93%, 40C
56 days
Shock
IEC/EN 60068-2-27, 11 ms
tbd g
n
Bump
IEC/EN 60068-2-29, 6 ms
tbd g
n
Sinusoidal vibration
IEC/EN 60068-2-6, 8.2...58.1/58.1...500 Hz
tbd g
n
/tbd g
n
Random vibration
IEC/EN 60068-2-64, 10...200/200...2000 Hz
tbd/tbd g
2
/Hz
MTBF
MIL-HDBK-217F Notice 2, G
B
, 60C
1.1 Mio h
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Mechanics
Print mountable industry standard
3
/
4
brick (2.4 x 3.45 x 0.5 inch
3
)
Pin
Function
_
inch (mm)
Thermal Impedance
1
Vi-
(Baseplate to ambient)
2
Vi+
0.08 0.002
(2.03 0.05)
100 lfm
2.8 K/W
3
ON/OFF
200 lfm
2.2 K/W
4
Sense+
0.04 0.002
(1.02 0.05)
300 lfm
1.7 K/W
5
Vo-
400 lfm
1.4 K/W
6
Vo+
4x 0.085 0.002
(4x 2.16 0.05)
7
Trim
8
Sense-
0.04 0.002
(1.02 0.05)
Note:
Thermal impedance data is dependent on
many environmental factors. The exact thermal
performance should be validated for specific
application. The figure is for a stand-alone module.
Options / Accessories
Option / Accessory
Suffix
Remarks
Negative Logic (unit works when active low)
N
0.24'' (6.1mm) Pin Lengths
tbd
Contact factory
0.24" (6.1mm) Horizontal Heatsink
1H
Includes Thermal Pad
0.24" (6.1mm) Vertical Heatsink
1V
Includes Thermal Pad
0.45" (11.4mm) Horizontal Heatsink
2H
Includes Thermal Pad
0.45" (11.4mm) Vertical Heatsink
2V
Includes Thermal Pad
0.95" (24.1mm) Horizontal Heatsink
3H
Includes Thermal Pad
0.95" (24.1mm) Vertical Heatsink
3V
Includes Thermal Pad
Subject to change without notice.
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