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Part: MLP
Category:
Power Management
-> DC-DC Converters
Description:
Company: Interpoint Corporation
Datasheet: Download MLP datasheet File size : 78 kB
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Datasheet text preview:
FEATURES
· 55°C to +85°C operation · 10 to 16 VDC input or 16 to 36 VDC input typical · Fully isolated · Opto-coupler feedback · Fixed frequency 125 kHz typical · Topology Push-Pull Forward · Transient protection 50 V for up to 50 ms 28 Vin models · Inhibit function · Indefinite short circuit protection · Trimmable output on single models · Up to 83% efficiency
DC/DC CONVERTERS 12 AND 28 VOLT INPUT
MHE/MLP SERIES 20 WATT
MODELS
VDC OUTPUT SINGLE DUAL 5 ±12 12 ±15 15
Size (max.): Non-flanged 2.125 x 1.125 x 0.495 MHE (case H6) inches or 0.417 MLP (case H4) (53.98 x 28.58 x 12.57 (MHE) or 10.59 (MLP) mm) Flanged 2.910 x 1.125 x 0.495 MHE (case K7) inches or 0.417 MLP (case K5) (73.91 x 28.58 x 12.57 (MHE) or 10.59 (MLP) mm) See Section B8, cases H4, H6, K5, and K7, for dimensions. Weight: 50 grams typical Screening: Standard or ES. See Section C2 for screening options, see Section A5 for ordering information.
DESCRIPTION
The MHE SeriesTM and the MLP SeriesTM DC/DC converters offer the high efficiencies associated with switching regulators, yet have full isolation and the excellent regulation typical of linear regulators. No external components are required for operation. MHE Series and MLP Series converters are built using thick-film hybrid technology, and are sealed in metal packages for military, aerospace, and other high-reliability applications. Unscreened models are solder sealed and are guaranteed to pass a gross leak test (maximum leak rate of 1 x 10-3 atm.-cc/sec). Environmentally screened models are hermetically sealed and are screened as described in Section C2. The MHE Series and MLP Series converters are pulse-width modulated switching regulators operating in the forward mode, with a nominal switching frequency of 125 to 140 kHz. Isolation is achieved through the use of a transformer in the forward power circuit, and an optocoupler is used in the feedback/control loop. The full load output power is available over the full input voltage range. Short-term transients of 50 volts will not impair normal operation for 28 volt input models. The efficiency is typically greater than 80% over the entire input voltage range and from approximately 25% of full load to full load. This feature makes the MHE/MLP Series converters ideal for either battery or aircraft power applications.
An inhibit function is provided on MHE/MLP Series converters to allow power shutdown and startup from a logic input. The unit is inhibited when the inhibit input pin (pin 2) is connected to the input common (pin 10). The open circuit voltage of the inhibit pin is 8 to 10 VDC for 12 V input models or 11 to 13 VDC for 28 V input models. During inhibit, the input inhibit pin must sink approximately 1 mA. In the inhibit mode, converter output drops to less than 1 V and the input current is typically 8 mA. Automatic current limiting circuitry protects the MHE/MLP Series converters against short circuits. MHE/MLP Series converters are rated to operate at full load up to a case temperature of 85°C, with the output power derated linearly to zero at 115°C. Because of the unit's high efficiency, heat sinking requirements are minimized, but due consideration should be given to removing self-generated heat when operating the device at maximum ratings. To increase dissipation, heat conducting material (PCB, copper sheet, heat sink, etc.) should be brought into contact with the converter's baseplate. When the MHE/MLP Series converters are used in applications requiring full power operation for extended periods of time, or in shock and vibration environments, it is highly recommended that the flange-mount option be used. This option provides improved thermal transfer capabilities as well as a mechanically secure mounting configuration.
B4-13
MHE/MLP SERIES 20 WATT
ABSOLUTE MAXIMUM RATINGS
Output Power · 10 to 20 watts depending on model Lead Soldering Temperature (10 sec per lead) · 300°C Storage Temperature Range (Case) · 55°C to +125°C
DC/DC CONVERTERS
INHIBIT
Inhibit TTL Open Collector · Logic low (output disabled) Logic low voltage 0.8 V · Referenced to input common · Logic high (output enabled) Open collector
TYPICAL CHARACTERISTICS
Output Voltage Temperature Coefficient · 150 ppm/°C, typical Input to Output Capacitance · 60 pF, typical Current Limit · 125% of full load, typical Isolation · 100 megohm minimum at 500 V Conversion Frequency · 125 kHz, typical Inhibit Pin Voltage (unit enabled) · 11 to 13 V MHE28XXX, MLP28XXX · 8 to 10 V MHE12XXX
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range Continuous · 17 to 40 VDC MHE28XXX · 10 to 16 VDC MHE12XXX · 16 to 40 VDC MLP28XXX Transient · 50 V for 50 msec on 28 V input models Case Operating Temperature (Tc) · 55°C to +85°C full power Derating Output Power/Current · Linearly from 100% at 85°C to 0% at 115° C · MHE28XXX models derate by 33% at 16 Vin
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
SINGLE OUTPUT MHE12XX MODELS PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT OUTPUT POWER OUTPUT RIPPLE VOLTAGE LINE REGULATION LOAD REGULATION INPUT VOLTAGE INPUT CURRENT INPUT RIPPLE CURRENT EFFICIENCY CONDITION 55°C TO +85°C 55°C TO +85°C 0 TO 1 MHz VIN MIN TO MAX NO LOAD TO FULL CONTINUOUS TRANSIENT 50 ms NO LOAD 10 kHz 2 MHz MIN 4.95 -- -- -- -- -- 10 -- -- -- 78 MHE1205S TYP 5.00 -- -- 35 2 10 12 -- -- 30 81 MAX 5.05 3 15 70 5 20 16 -- 24 80 -- MIN 11.88 -- -- -- -- -- 10 -- -- -- 79 MHE1212S TYP 12.00 -- -- 35 3 5 12 -- -- 30 82 MAX 12.12 1.25 15 70 10 15 16 -- 32 80 -- MHE1215S MIN 14.85 -- -- -- -- -- 10 -- -- -- 80 TYP 15.00 -- -- 35 3 10 12 -- -- 30 83 MAX UNITS 15.15 VDC 1.0 A 15 70 10 20 16 -- 32 80 -- W mV p-p mV mV VDC V mA mA p-p %
B4-14
DC/DC CONVERTERS
SINGLE AND DUAL MHE28XX MODELS PARAMETER CONDITIONS OUTPUT VOLTAGE OUTPUT CURRENT1 55 TO +85°C OUTPUT POWER1 OUTPUT RIPPLE VOLTAGE LINE REGULATION LOAD REGULATION INPUT VOLTAGE INPUT CURRENT INPUT RIPPLE CURRENT EFFICIENCY 55 TO +85°C 0 - 1 MHz VIN MIN TO MAX NO LOAD TO FULL CONTINUOUS TRANSIENT 50 ms NO LOAD 10 kHz - 2 MHz
MHE/MLP SERIES 20 WATT
UNITS VDC A W mV p-p mV mV VDC V mA mA p-p %
Electrical Characteristics: 25°C Tc, 28 VDC Vin (12 Vin for 12 V models), 100% load, unless otherwise specified.
MHE2805S MHE2812S MHE2815S MHE2812D MHE2815D MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX 4.95 5.00 5.05 11.88 12.00 12.12 14.85 15.00 15.15 ±11.88 ±12.00 ±12.12 ±14.85 ±15.00 ±15.15 -- -- 3.0 -- -- 1.67 -- -- 1.33 -- -- ±0.63 -- -- ±0.5 -- -- -- -- 17 -- -- -- 78 -- 35 2 10 28 -- -- 20 81 15 60 5 20 40 50 18 50 -- -- -- -- -- 17 -- -- -- 79 -- 60 3 5 28 -- -- 25 82 20 80 10 15 40 50 30 50 -- -- -- -- -- 17 -- -- -- 80 -- 30 3 5 28 -- -- 25 83 20 60 10 15 40 50 30 50 -- -- -- -- -- 17 -- -- -- 76 -- 30 3 5 28 -- -- 25 79 15 50 10 15 40 50 35 50 -- -- -- -- -- 17 -- -- -- 76 -- 30 3 5 28 -- -- 25 79 15 50 15 15 40 50 35 50 --
SINGLE AND DUAL MLP MODELS PARAMETER CONDITIONS OUTPUT VOLTAGE OUTPUT CURRENT1 55 TO +85°C OUTPUT POWER1 OUTPUT RIPPLE VOLTAGE LINE REGULATION 55 TO +85°C 0 - 1 MHz VIN MIN TO MAX
MLP2805S MLP2812S MLP2815S MLP2812D MLP2815D MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX 4.95 5.00 5.05 11.88 12.00 12.12 14.85 15.00 15.15 ±11.88 ±12.00 ±12.12 ±14.85 ±15.00 ±15.15 -- -- 2 -- -- 1.25 -- -- 1 -- -- ±0.41 -- -- ±0.33 -- -- -- -- 16 -- -- -- 78 -- 25 2 10 28 -- -- 20 81 10 60 5 20 40 50 20 50 -- -- -- -- -- 16 -- -- -- 79 -- 30 3 5 28 -- -- 25 82 15 50 10 15 40 50 30 50 -- -- -- -- -- 16 -- -- -- 80 -- 30 3 5 28 -- -- 25 83 15 50 10 15 40 50 30 50 -- -- -- -- -- 16 -- -- -- 78 -- 30 3 5 28 -- -- 25 81 10 60 10 15 40 50 30 50 -- -- -- -- -- 16 -- -- -- 78 -- 30 3 5 28 -- -- 25 81 10 60 10 15 40 50 30 50 --
UNITS VDC A W mV p-p mV mV VDC V mA mA p-p %
LOAD REGULATION NO LOAD TO FULL INPUT VOLTAGE CONTINUOUS TRANSIENT 50 ms INPUT CURRENT NO LOAD INPUT RIPPLE CURRENT 10 kHz - 2 MHz EFFICIENCY
Note 1. On dual output models at least 25% of the load should be on the positive output.
B4-15
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