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DC/DC Converter TEQ 300WIR Series, 300 Watt
Models
• High power block with excellent
thermal convection
• Operating temperature -40°C to +80°
• Increased shock & vibration resistance
• Ultra wide 4:1 input voltage range
• EN 50155 approval for railway
applications
• Excellent efficiency up to 92%
• Constant current output characteristic
for battery load applications
• Power sharing (up to 3 pcs in parallel)
• Input filter meet EN 55032 class A
• I/O isolation 3000 VDC
• Infinite capacitive load
• Under voltage lock-out circuit
• Soft start
• Input protection filter
The TEQ-300WIR Series is a family of isolated high performance dc-dc conver-
ter modules with ultra-wide 4:1 input voltage ranges which come in a rugged,
sealed metal case.
These converters are suitable for a wide range of applications, but the product is
designed particularly also for industrial applications where often no PCB moun-
ting is possible but the module has to be mounted on a chassis. A very high
efficiency and the overall heatsink construction allows an operating temperature
up to +60°C with natural convection cooling without power derating and up to
+80ºC with power derating. Further features include output voltage trimming,
Remote On/Off and under voltage lockout. The ultra wide input voltage range
and reverse input voltage protection make these converters also an interesting
solution for battery operated systems.
Order code Input voltage Output voltage Output current max. Efficiency typ.
TEQ 300-4812WIR
12 VDC 25 A 89 %
TEQ 300-4815WIR 18 - 75 VDC
24 VDC 12.5 A 92 %
TEQ 300-4816WIR (nominal 48 VDC)
28 VDC 10.8 A 91 %
TEQ 300-4818WIR
48 VDC 6.3 A 92 %
TEQ 300-7212WIR
12 VDC 25 A 89 %
TEQ 300-7215WIR 43 - 160 VDC
24 VDC 12.5 A 91 %
TEQ 300-7216WIR (nominal 110 VDC)
28 VDC 10.8 A 91 %
TEQ 300-7218WIR
48 VDC 6.3 A 92 %
Models
TEQ 300WIR Series, 300 Watt
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All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.
Input Specifications
Input current no load 48 Vin models: 30 mA typ.
110 Vin models: 25 mA typ.
Surge voltage (1 s max.) 48 Vin models: 100 V max.
110 Vin models: 185 V max.
Start-up voltage 48 Vin models: 18 VDC (or lower)
110 Vin models: 43 VDC (or lower)
Under voltage shut down 48 Vin models: 16.8 VDC (or lower)
110 Vin models: 36.0 VDC (or lower)
External fuse (required) 48 Vin models: 25 A (fast acting)
110 Vin models: 12 A (fast acting)
Input filter Common mode choke and Pi type
EMC emissions – Conducted and radiated input suppression EN 55032, EN 55011 class A (internal filter)
EMC immunity – ESD (electrostatic discharge) EN 61000-4-2, air ±8 kV, contact ±6 kV,
perf. criteria A
– Radiated immunity EN 61000-4-3, 20 V/m, perf. criteria A
– Fast transient / surge EN 61000-4-4, ±2 kV, perf. criteria A
(without external input capacitor) EN 55024: EN 61000-4-5, ±1 kV perf. criteria A
EN 50155: EN 61000-4-5, ±2 kV perf. criteria A
– Conducted immunity EN 61000-4-6, 10 Vrms, perf. criteria A
– Power frequency magnetic field EN 61000-4-8, 100 A/m, perf. criteria A
Output Specifications
Voltage adjustability – Max. output deviation is incl. remote sense ±20 %
Remote Sense – Remote sense can compensate maximal +10% of Vout nom.
Voltage set accuracy ±1 %
Output power – Rated output power 300 W
– Max. output power up to 400 W
(depending on temperature and duty cycle)
Regulation – Input variation (Vin min. to Vin max.) 0.2 % max.
– Load variation (0 to 100 %) 0.5 % max.
Temperature coefficient ±0.02 %/K typ.
Start up time (constant resistive load) 140 ms
Minimum load not required
Ripple and noise (20 MHz Bandwidth) 12 Vout models: 125 mVp-p max.
24 & 28 Vout models: 250 mVp-p max.
48 Vout models: 350 mVp-p max.
Transient response (25% load step change) 250 μs typ.
Over voltage protection at 125 - 140 % of Vout nom. (Latch mode)
Over current protection (constant current mode) at 105 - 120 % of rated Iout max.
Short circuit protection continuous, automatic recovery
Capacitive load infinite
Power sharing – Max. output power of 2 pcs. paralleled 540 W
– Max. output power of 3 pcs. paralleled 810 W
– Load share accuracy 10 % max.
– For further information refere to application note www.tracopower.com/overview/teq300wir