1000
WATT 24S12.84FXM
DC/DC
CONVERTER
2401 Stanwell Drive, Concord Ca. 94520
Ph: 925-687-4411
1
Fax: 925-687-3333
www.calex.com
Email: sales@calex.com
6/2/17, 6/15/17, ECO 170621-1, 170802-1, 171121-1, 180921-
1
Features
Description
The 4:1 Input Voltage 1000 Watt Single output
24S12.84FXM DC/DC converter provides a precisely
regulated dc output. The output voltage is fully isolated
from the input, allowing the output to be positive or
negative polarity and with various ground connections.
The 24S12.84FXM meets the most rigorous
performance standards in an industry standard footprint
and is optimized for 12V battery applications but can
also be used in 24Vin process control and 28Vin
military COTS applications.
The 4:1 Input Voltage 24S12.84FXM includes output
current monitor (Imon) and temperature monitor
(TEMP) signals. Threaded through holes are provided
to allow easy mounting or addition of a heatsink for
extended temperature operation.
The converters high efficiency and high power density
are accomplished through use of high-efficiency
synchronous rectification technology, advanced
electronic circuit, packaging and thermal design thus
resulting in a high reliability product. Converter operates
at a fixed frequency and follows conservative component
de-rating guidelines.
Product is designed and manufactured in the USA.
●
4:1 Input voltage range
●
High power density
● Small size 2.5” x 4.7” x 0.52”
●
Efficiency up to 95.4%
●
Excellent thermal performance with metal case
●
Over-Current and Short Circuit Protection
●
Over-Temperature protection
●
Auto-restart
●
Monotonic startup into pre bias
●
Constant frequency
●
Remote ON/OFF
●
Good shock and vibration damping
●
Encapsulated Units Available (See ordering
information below model selection)
●
RoHS Compliant
Model
Input Range
VDC
Vout
VDC
Iout
ADC
Min Max
24S12.84FXM (ROHS) 9 36 12 84
1. Negative Logic ON/OFF feature available. Add “-N” to the
part number when ordering.
i.e. 24S12.84FXM-N (ROHS)
2. Encapsulated Unit available. Add –S to the part number
when ordering. i.e 24S12.84FXM-S (ROHS) when ordering.
3. Designed to meet MIL-STD-810G for functional shock and
vibration. The unit must be properly secured to the interface
medium (PCB/Chassis) by use of the threaded inserts of the
unit.
4. A thermal management device, such as a heatsink, is
required to ensure proper operation of this device. The thermal
management medium is required to maintain baseplate < 105ºC
for full rated power.
1000
WATT 24S12.84FXM
DC/DC
CONVERTER
2401 Stanwell Drive, Concord Ca. 94520
Ph: 925-687-4411
2
Fax: 925-687-3333
www.calex.com
Email: sales@calex.com
6/2/17, 6/15/17, ECO 170621-1, 170802-1, 171121-1, 180921-
1
Electrical Specifications
Conditions: T
A
= 25 ºC, Airflow = 300 LFM (1.5 m/s), Vin = 14VDC, unless otherwise specified. Specifications are subject to
change without notice.
Parameter Notes Min Typ Max
Units
Absolute Maximum Ratings
Input Voltage
Continuous 0
40
V
Transient (100ms)
50 V
Operating Temperature
Baseplate (100% load)
-40
105 °C
Storage Temperature
-55
125 °C
Isolation Characteristics and Safety
Isolation Voltage
Input to Output
2250
V
Input to Baseplate & Output to Baseplate 1500
V
Isolation Capacitance
9000
pF
Isolation Resistance
10
20
MΩ
Insulation Safety Rating
Basic
Designed to meet UL/cUL 60950, IEC/EN 60950-1
Feature Characteristics
Fixed Switching Frequency
200
kHz
Input Current and Output Voltage Ripple
400
kHz
Output Current Monitor - Imon
Voltage proportional to output current
22
mV/A
Accuracy
+/- 2
%
TEMP monitor
MCP9700A used for sensing PCB
temperature of the converter. Voltage range
for temperature range -40°C to 125 °C .
0.1
1.75
V
Output Overvoltage Protection
Non-latching
114 119 130 %
Overtemperature Shutdown (Baseplate)
Non-latching
108
112
120
°C
Auto-Restart Period
Applies to all protection features
1.7
2
2.3
s
Turn-On Time from Vin
Time from UVLO to
Vo=90%V
OUT
(NOM)
Resistive
load
480 517 530 ms
Turn-On Time from ON/OFF Control
Time from ON to
Vo=90%V
OUT
(NOM)
Resistive
load
15
22
30
ms
Rise Time Vout from 10% to 90%
4
7.5 11 ms
ON/OFF Control – Positive Logic
ON state Pin open = ON or
2
12 V
Control Current Leakage current
0.16 mA
OFF state
0
0.8
V
Control current Sinking
0.3
0.36 mA
ON/OFF Control – Negative Logic
ON state
Pin shorted to – ON/OFF pin or
0
0.8 V
OFF state Pin open = OFF or
2
12 V
Thermal Characteristics
Thermal resistance Baseplate to Ambient
Converter soldered to 5” x 3.5” x 0.07”,
4 layer/2Oz copper FR4 PCB.
2.6 °C/W