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Details, datasheet, quote on part number:MTR283R3S/883
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Datasheet text preview:
FEATURES
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55° to +125°C operation 16 to 40 VDC input Fully isolated Magnetic feedback Fixed frequency 600 kHz typical Topology Single Ended Forward 50 V for up to 50 ms transient protection Inhibit and synchronization functions Indefinite short circuit protection Up to 30 watts output power Trim and remote sense on single output models · Up to 84% efficiency
DC/DC CONVERTERS 28 VOLT INPUT
MTR SERIES 30 WATT
MODELS
VDC OUTPUT SINGLE DUAL TRIPLE 3.3 ±5 +5 & 5 ±12 ±12 12 ±15 +5 & 15 ±15 18
Size (max): Non-flanged: Single and dual output models, case H2 (H4 for MTR Dual with standard or ES screening, ht 0.417", 10.59 mm) 2.125 x 1.125 x 0.400 inches (53.98 x 28.58 x 10.16 mm) Triple output models, case F1, 1.950 x 1.350 x 0.405 inches (49.53 x 34.29 x 10.29 mm) Flanged: Single and dual output models, case K3 (or K5 for MTR Dual with standard or ES screening, ht. 0.417", 10.59 mm) 2.910 x 1.125 x 0.400 inches (73.91 x 28.58 x 10.16 mm) Triple output models, case J1, 2.720 x 1.350 x 0.405 inches (69.09 x 34.29 x 10.29 mm) Weight: Single and dual non-flanged 50 grams max., flanged 52 grams max. Triple non-flanged 58 grams max., flanged 62 grams max. Screening: Standard, ES, or 883 (Class H).
DESCRIPTION
The MTR SeriesTM of DC/DC converters offers up to 30 watts of output power from single, dual, or triple output configurations. They operate over the full military temperature range with up to 84% efficiency. MTR converters are packaged in hermetically sealed metal cases, making them ideal for use in military, aerospace and other high reliability applications.
SYNCHRONIZATION
Synchronizing the converter with the system clock allows the designer to confine switching noise to clock transitions, minimizing interference and reducing the need for filtering. In sync mode, the converter will run at any frequency between 500 kHz and 675 kHz. The sync control operates with a quasi-TTL signal at any duty cycle between 40% and 60%. The sync pin must be connected to input common pin when not in use.
CONVERTER DESIGN
The MTR converters are constant frequency, pulse-width modulated switching regulators which use a quasi-square wave, single ended, forward converter design. Tight load regulation is maintained via wide bandwidth magnetic feedback and, on single output models, through use of remote sense. On dual output models, the positive output is independently regulated and the negative output is cross regulated through the use of tightly coupled magnetics and shunt regulators. The MTR Series triple output DC/DC converter's design includes individual regulators on the auxiliary outputs which provide for no cross regulation error when a minimum 500 mA load is maintained on the main (+5) output. Indefinite short circuit protection and overload protection are provided by a constant current-limit feature. This protective system senses current in the converter's secondary stage and limits it to approximately 115% of the maximum rated output current. MTR converters are provided with internal filtering capacitors that help reduce the need for external components in normal operation. For systems that require compliance with MIL-STD-461C's CE03 standard, Interpoint offers filter/transient suppression modules (including the FMC-461, FMD-461 and FM-704A series filters) which will result in compliance. Contact your Interpoint representative for further details.
WIDE VOLTAGE RANGE
MTR converters are designed to provide full power operation over a full 16 to 40 VDC voltage range. Operation below 16 volts, including MIL-STD-704E emergency power conditions is possible with derated power. Refer to the low line dropout graph (Figure 22) for details.
IMPROVED DYNAMIC RESPONSE
The MTR Series feed-forward compensation system provides excellent dynamic response and noise rejection. Audio rejection is typically 50 dB. The minimum to maximum step line transient response is typically less than 4%.
INHIBIT FUNCTION
MTR converters provide an inhibit terminal that can be used to disable internal switching, resulting in no output and very low quiescent input current. The converter is inhibited when a TTL compatible low (0.8 V) is applied to the inhibit pin. The unit is enabled when the pin, which is internally connected to a pull-up resistor, is left unconnected or is connected to an open-collector gate. The open circuit output voltage associated with the inhibit pin is 9 to 11 V. In the inhibit mode, a maximum of 8 mA must be sunk from the inhibit pin.
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MTR SERIES 30 WATT
ABSOLUTE MAXIMUM RATINGS
Input Voltage · 16 to 40 VDC Output Power · 25 to 30 watts depending on model Lead Soldering Temperature (10 sec per pin) · 300°C Storage Temperature Range (Case) · 65°C to +135°C
DC/DC CONVERTERS
SYNC AND INHIBIT
Sync (500 to 675 kHz) · Duty cycle 40% min, 60% max · Logic low 0.8 V max · Logic high 4.5 V min, 5 V max · Referenced to input common · If not used, connect to input common Inhibit TTL Open Collector · Logic low (output disabled) Voltage 0.8 V Inhibit pin current 8.0 mA max · Referenced to input common · Logic high (output enabled) Open collector
TYPICAL CHARACTERISTICS
Output Voltage Temperature Coefficient · 100 ppm/°C typical single and dual outputs · 200 ppm/°C main, 300 ppm/°C aux triple output Input to Output Capacitance · 50 pF typ (100 pF typ triple outputs) Current Limit · 115% of full load typical Isolation · 100 megohm minimum at 500 V Audio Rejection · 40 dB typ (50 dB typ triple output)l Conversion Frequency · Free run 550 min, 600 typ, 650 max kHz · External sync 500 to 675 kHz Inhibit Pin Voltage (unit enabled) · 9 to 11 V
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range · 16 to 40 VDC continuous · 50 V for 50 msec transient Case Operating Temperature (Tc) · 55°C to +125°C full power · 55°C to +135°C absolute Derating Output Power/Current · Linearly from 100% at 125°C to 0% at 135°C
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
SINGLE OUTPUT MODELS PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT1 OUTPUT POWER1 OUTPUT RIPPLE VOLTAGE LINE REGULATION2 LOAD REGULATION INPUT VOLTAGE1 NO LOAD TO FULL INPUT CURRENT1 CONDITION VIN = 16 to 40 VDC VIN = 16 to 40 VDC 10 kHz 2 MHz Tc = 55°C TO +125°C Vin = 16 to 40 VDC Tc = 55°C TO +125°C NO LOAD TO FULL Tc = 55°C TO +125°C CONTINUOUS TRANSIENT 50 ms NO LOAD FULL LOAD INHIBITED 10 kHz 10 MHz Tc = 55°C TO +125°C SHORT CIRCUIT POWER DISSIPATION RECOVERY1, 4 50% 100% 50% TRANSIENT RECOVERY4 16 40 16 VDC TRANSIENT5 RECOVERY4 DELAY OVERSHOOT FULL LOAD NO LOAD MTR283R3S MIN 3.27 0 0 -- -- -- -- -- -- 16 -- -- -- -- -- 74 -- -- -- -- -- -- -- -- -- TYP 3.30 -- 15 -- 5 -- 2 -- 28 -- 30 0.94 7 25 76 -- 1.4 MAX 3.33 6.06 20 40 50 10 10 10 10 40 50 75 -- 8 50 -- 10 6 MTR2805S MIN 4.95 0 0 -- -- -- -- -- -- 16 -- -- -- -- -- 76 -- -- -- -- -- -- -- -- -- TYP 5.00 -- -- 35 50 10 15 5 15 28 -- 35 1.15 3 20 78 -- 1.4 MTR2812S MTR2815S MTR2818S MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS 5.05 11.88 12.00 12.12 14.85 15.00 15.15 17.82 18.00 18.18 VDC 5.0 0 -- 2.5 0 -- 2.0 0 -- 1.67 A 25 50 90 30 50 30 50 40 50 75 -- 8 50 -- 10 5 0 -- -- -- -- -- -- 16 -- -- -- -- -- 80 -- -- -- -- -- -- -- -- -- -- 25 40 10 15 5 15 28 -- 35 1.30 3 20 83 -- 1.4 30 50 90 30 50 30 50 40 50 75 -- 8 50 -- 10 5 0 -- -- -- -- -- -- 16 -- -- -- -- -- 81 -- -- -- -- -- -- -- -- -- -- 25 40 10 15 5 15 28 -- 35 1.25 3 20 84 -- 1.4 30 50 90 30 50 30 50 40 50 75 -- 8 50 -- 10 5 0 -- -- -- -- -- -- 16 -- -- -- -- -- 81 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 28 -- -- 1.33 -- -- -- -- 1.4 -- 60 ±500 300 -- 0 -- 30 40 90 30 50 30 50 40 50 50 -- 8 50 -- 10 -- W mV p-p mV mV VDC V mA A mA mA p-p % W ms
INPUT RIPPLE CURRENT EFFICIENCY LOAD FAULT3
STEP LOAD RESP.
±125 ±250 -- 200 -- -- 1.4 0 33 ±300 300 5 50 150
±200 ±300 60 200 ±200 ±300 -- 300 1.4 0 50 5 50 250
±250 ±400 60 200 ±400 ±500 -- 300 1.4 0 120 5 120 600
±350 ±500 60 200 ±500 ±600 -- 300 1.4 0 150 5 150 750
±600 mV pk -- µs -- -- 5 -- -- mV pk µs ms
STEP LINE RESP.
START-UP1
mV pk
Notes 1. Tc = 55°C to +125°C 2. Operation is limited below 16V (see Figure 22). 3. Indefinite short circuit protection not guaranteed above 125°C case.
4. Recovery time is measured from application of the transient to point at which Vout is within 1% of final value. 5. Transition time 10 µs.
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DC/DC CONVERTERS
DUAL OUTPUT MODELS PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT1, 2 OUTPUT POWER1, 2 OUTPUT RIPPLE VOLTAGE +/ VOUT LINE REGULATION3 VIN = 16 TO 40 VDC Tc = 55°C TO +125°C LOAD REGULATION NO LOAD TO FULL Tc = 55°C TO +125°C CROSS REGULATION EFFECT ON VOUT INPUT VOLTAGE1 NO LOAD TO FULL INPUT CURRENT SEE NOTE 4 SEE NOTE 5 CONTINUOUS TRANSIENT 50 ms NO LOAD FULL LOAD INHIBITED 10 kHz - 10 MHz POWER DISSIPATION SHORT CIRCUIT1 RECOVERY 50 100 50% BALANCED TRANSIENT RECOVERY7 16 40 16 VIN TRANSIENT8 RECOVERY7 DELAY OVERSHOOT FULL LOAD NO LOAD -- -- 0 50 50 250 -- -- 0 120 120 600 -- -- 0 150 CONDITIONS +VOUT VOUT VIN = 16 TO 40 VDC VIN = 16 TO 40 VDC 10 kHz - 2 MHz Tc = 55°C TO +125°C +VOUT VOUT +VOUT VOUT +VOUT VOUT +VOUT VOUT MTR2805D MIN TYP MAX 4.95 5.00 5.05 4.92 0 0 -- -- -- -- -- -- -- -- -- -- -- -- 16 0 -- -- -- -- 76 -- -- -- -- -- -- -- 5.00 2.5 -- 20 40 10 50 10 50 5 25 5 25 7 4 28 -- 35 1.10 3 15 78 -- 1.4 ±200 100 ±200 -- 1.4 5.07 4.5 25 50 80 50 100 50 100 30 50 50 100 12 6 40 50 75 -- 8 50 -- 10 5.0 ±300 200 ±400 300 5 MTR2812D MIN TYP MAX 11.88 12.00 12.12 11.82 0 0 -- -- -- -- -- -- -- -- -- -- -- -- 16 0 -- -- -- -- 78 -- -- -- -- -- -- -- 12.00 1.25 -- 30 40 10 50 10 50 15 30 15 30 4 4 28 -- 50 1.34 3 20 81 -- 1.4 ±150 100 ±200 -- 1.4 12.18 2.25 30 80 120 30 120 50 150 30 120 50 180 8.3 6 40 50 75 -- 8 50 -- 10 5.0 ±300 200 ±400 300 5
MTR SERIES 30 WATT
MTR2815D MIN TYP MAX 14.85 15.00 15.15 14.77 15.00 0 0 -- -- -- -- -- -- -- -- -- -- -- -- 16 0 -- -- -- -- 80 -- -- -- -- -- -- -- 1.0 -- 25 40 10 50 10 50 15 30 15 30 3 4 28 -- 50 1.29 3 20 83 -- 1.4 ±200 100 ±400 -- 1.4 15.23 1.8 30 80 120 30 150 50 180 30 150 50 180 8 6 40 50 75 -- 8 50 -- 10 5.0 ±400 200 ±500 300 5 150 750 % VDC V mA A mA mA p-p % W ms mV pk µs mV pk µs ms mV mV A W mV p-p UNITS VDC
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
INPUT RIPPLE CURRENT1 EFFICIENCY LOAD FAULT6
STEP LOAD RESPONSE ± VOUT STEP LINE RESPONSE ± VOUT STARTUP1
mV pk
Notes 1. Tc = 55°C to +125°C. 2. Up to 90% of the total output current/power is available from either output providing the positive output is carrying at least 10% of the total output power. 3. Operation is limited below 16 V (see Figure 22). 4. Effect on the negative output under the following conditions: +Pout 20% to 80%; Pout 80% to 20%
5. Effect on the negative output under the following conditions: +Pout 50%; Pout 10% to 50% 6. Indefinite short circuit protection not guaranteed above 125°C case. 7. Recovery time is measured from application of the transient to point at which Vout is within 1% of final value. 8. Transition time 10 µs.
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