MHV2815S

Crane Aerospace & Electronics Power Solutions MHV Single, Dual and Triple DC/DC Converters 28 VOLT INPUT – 15 WATT FEATURES • • • • • • • –55° to +125°C operation 16 to 50 VDC input Fully Isolated Optocoupler feedback Fixed switching frequency 600 kHz typical, Topology – Dual Single Ended Flybacks 80 V / 120 ms transient protection (12 Vout single and dual to 75 V, 15 Vout single and dual to 60V) Inhibit and sync functions Trim on single output models Up to 81% efficiency Low output noise MODELS VDC OUTPUT SINGLE DUAL TRIPLE 3.3 ±5 +5 & ±12 5 ±12 +5 & ±15 12 ±15 15 • • • • DESCRIPTION Interpoint’s MHV Series™ of DC/DC converters offers a wide input voltage range of 16 to 50 VDC and a choice of nine different output voltage configurations comprised of single, dual or triple outputs. The converters will withstand transients of up to 80 V for up to 120 milliseconds while maintaining output voltages (with the exception of the 12 volt single and dual outputs which will withstand transients up to 75 volts and the 15 volt single and dual outputs which will withstand up to 60 volts). The MHV Series operates at a full 15 watts of output power (10 watts for the 3.3 volt single output) over the military temperature range of –55°C to +125°C while maintaining low input and output noise. When a low (0.8 V) is applied to the inhibit terminal the converter shuts down, typically drawing 8.4 mA of input current. Inhibit terminal resistance is 3.3 k ohms and draws 8.4 mA, typical. SYNCHRONIZATION FUNCTION Applying an external signal of 40% to 60% duty cycle and 500 to 700 kHz will synchronize the converter to your system requirements. Free run clock frequency is approximately 600 kHz. If not used, the sync terminal must be left unconnected. TRIM Single output converters feature a trim range of as low as 80% to as high as 110% of Vout nominal, depending on the model. To trim up, connect a resistor from output common (pin 4) to the trim terminal (pin 3). To trim down, connect a resistor from the positive output (pin 5) to the trim terminal (pin 3). See Figure 6 and trim tables for more information. CONVERTER DESIGN MHV Series DC/DC converters are switching regulators that use continuous flyback conversion topology with a clock frequency of approximately 600 kHz. MHV Series converters incorporate two internal converters with one converter phase shifted 180° from the other to create a dual phase/phase-shifted operation. Each of the internal converters operates at approximately one-half of the clock frequency. This proprietary technology eliminates cross regulation, minimizes input ripple, greatly reduces output ripple and improves efficiency. On the triple output models, this design provides completely independent regulation with no cross regulation effect between the main and auxiliary outputs and no minimum loading required on the main output. UNDERVOLTAGE LOCKOUT An undervoltage lockout of approximately 7 VDC keeps system current levels low during startup. SHORT CIRCUIT PROTECTION Under short circuit conditions of 130% or more of full load current, the converter will protect itself by shutting down. Short circuit duration should be brief because power dissipation may cause internal temperatures to rise rapidly. Restart is automatic upon removal of the short circuit. INHIBIT FUNCTION Open collector TTL levels control the inhibit circuit. The converter is enabled when the inhibit terminal is left unconnected or when the inhibit terminal is connected to a voltage between 11.5 and 50 V. Crane Aerospace & Electronics Electronics Group (Interpoint Brand) PO Box 97005 • Redmond WA 98073-9705 425.882.3100 • electronics@craneae.com www.craneae.com Page 1 of 14 Rev D - 20060710 Crane Aerospace & Electronics Power Solutions MHV Single, Dual and Triple DC/DC Converters 28 VOLT INPUT – 15 WATT OPERATING CONDITIONS AND CHARACTERISTICS Input Voltage Range • 16 to 50 VDC continuous • Transient: see Electrical Characteristics tables Output Power • 15 watts (10 watts MHV283R3S) Lead Soldering Temperature (10 sec per lead) • 300°C Storage Temperature Range (Case) • –65°C to +150°C Case Operating Temperature (Tc) • –55°C to +125°C full power • –55°C to +130°C absolute Derating Output Power/Current • Linearly from 100% at 125°C to 0% at 130°C Output Voltage Temperature Coefficient • 100 ppm/°C typical Current Limit • 130% of full load typical at 25°C Isolation • 100 megohm minimum at 500 V Audio Rejection • 30 dB typical Conversion (Switching) Frequency • Free run mode 300 kHz typical 245 kHz. min, 355 kHz. max @ Tc = -55° to +125°C Inhibit Pin Voltage (unit enabled) • 11 V typical Undervoltage Lockout • 7 V input typical Clock Frequency • External sync range 490 to 710 kHz. MECHANICAL AND ENVIRONMENTAL Size (maximum) Non-flanged Single and dual output models 2.125 x 1.125 x 0.400 inches (53.98 x 28.58 x 10.16 mm) See case H2 for dimensions. Triple output models 1.950 x 1.350 x 0.405 inches (49.53 x 34.29 x 10.29 mm) See case F1 for dimensions. Flanged Single and dual output models 2.910 x 1.125 x 0.400 inches (73.91 x 28.58 x 10.16 mm) See case K3 for dimensions. Triple output models 2.720 x 1.350 x 0.405 inches (69.09 x 34.29 x 10.29 mm) See case J1 for dimensions. Weight (maximum) 60 grams typical Screening Standard, ES, or 883 (Class H). See “883, Class H, QML Products – Element Evaluation” and “883, Class H, QML Products – Environmental Screening” for more information. SYNC AND INHIBIT Sync In (490 to 710 kHz) • Duty cycle 40% min, 60% max • Logic low 0.8 V max • Logic high 4.5 V min, 10 V max • Referenced to input common • If not used, leave unconnected Sync Out - Referenced to input common Inhibit (INH1, INH2) : TTL Open Collector • Logic low (output disabled) Logic low voltage ≤0.8 V Inhibit pin current 8.4 mA typical, 10 mA maximum • Referenced to input common • Logic high (output enabled) Open collector Unconnected or 11.5 to 50 V Positive Input 0o Positive Output, Main (+5) PWM CM Controller Feedback Isolator Input Common Output Common Positive Output, Auxiliary Sync. PWM CM Controller Feedback Isolator 180o Negative Output, Auxiliary FIGURE 1: MHV TRIPLE BLOCK DIAGRAM www.craneae.com Page 2 of 14 Rev D- 20060710 Crane Aerospace & Electronics Power Solutions MHV Single, Dual and Triple DC/DC Converters 28 VOLT INPUT – 15 WATT PIN OUT Pin 1 2 3 4 5 6,7 8 9 10 Single Output Positive Input Inhibit Trim Output Common Positive Output Case Ground Case Ground Sync In Input Common Dual Output Positive Input Inhibit Positive Output Output Common Negative Output Case Ground Case Ground Sync In Input Common Triple Output Positive Input Main (+5) Output Output Common Neg. Aux. Output Pos. Aux. Output Case Ground Inhibit Sync In Input Common Case Inhibit (INH1, INH2) Sync In PINS NOT IN USE User’s discretion Leave unconnected Leave unconnected Leave sync pin (pin 9) unconnected if not used. Dot on top of cover indicates pin one. Dot on top of cover indicates pin one. 1 1 2 3 4 5 2 3 4 5 BOTTOM VIEW MHV TRIPLE FLANGED AND NON-FLANGED 10 9 8 7 6 10 9 8 7 6 Dotted line outlines flanged package option. See cases H2 and K3 for dimensions. Dotted line outlines flanged package option. See cases F1 and J1 for dimensions. FIGURE 2: PIN OUT SINGLES AND DUALS FIGURE 3: PIN OUT TRIPLE www.craneae.com Page 3 of 14 Rev D- 20060710 Crane Aerospace & Electronics Power Solutions MHV Single, Dual and Triple DC/DC Converters 28 VOLT INPUT – 15 WATT 1 9 28V 2 Positive Input Sync In MHV Inhibit (pin 8 on triple output models) 10 Input Common FIGURE 4: TYPICAL CONNECTIONS 1 Positive Input FMC-461 Positive Output 2 1 Positive Input MHV 28V or FMH-461 EMI FILTER 5 Input Common Output Common 4 3 Case* 10 Input Common 6, 7, 8 Chassis Ground *The case ground connection should be as low an impedance as possible to minimize EMI. Direct contact of baseplate to chassis ground provides the lowest impedance. FIGURE 5: EMI FILTER CONNECTION TRIM – SINGLE OUTPUT MODELS ONLY Calculated Trim Quick Reference Trim Table Trim down: RT (kΩ) = Trim up: RT (kΩ) = ( ( (Vo – 2.5) Vo nominal – V0 2.5A Vo – Vo nominal ) ) MODEL A–B MHV283R3S % VOUT NOMINAL 110 18 8 n/a 0.3 106 102 95 90 RTRIM ( (RT) k ohms 36 20 19 21 128 81 116 122 RT 3 TRIM +VO TRIM DOWN 5 80 n/a n/a 11 28 4 23 177 255 n/a 5 67 104 –B MHV2805S MHV2812S MHV2815S Vo = desired output voltage Formula 3.3V A 3.7 B 10 Values by Model 5V 12V 15V 3.7 14 18.2 10 30 30 MHV SINGLE OUTPUT Notes If calculated result is a negative value, the desired output voltage is outside the allowed trim range. Calculated values of RT are ±15%. When trimming up, do not exceed the maximum output power. When trimming down, do not exceed the maximum output current. OUTPUT COMMON 4 TRIM UP FIGURE 6: MHV SINGLE OUTPUTTRIM www.craneae.com Page 4 of 14 Rev D- 20060710 Crane Aerospace & Electronics Power Solutions MHV Single, Dual and Triple DC/DC Converters 28 VOLT INPUT – 15 WATT MODEL NUMBERING KEY MHV Base Model Input Voltage Output Voltage (Main and aux. Vout for triple models) (R = decimal point, 3R3 = 3.3 Vout) Number of Outputs (S = single, D = dual, T = triple) Case Option (Non-flanged case has no designator in this position) Screening (Standard screening has no designator in this position.) 28 512 T F / 883 SMD NUMBERS STANDARD MICROCIRCUIT DRAWING (SMD) 5962-9852801HXC 5962-9852201HXC 5962-9852301HXC 5962-9852401HXC 5962-9852501HXC 5962-9852601HXC 5962-9852701HXC 5962-9673001HXC 5962-9673101HXC MHV SERIES SIMILAR PART MHV283R3S/883 MHV2805S/883 MHV2812S/883 MHV2815S/883 MHV2805D/883 MHV2812D/883 MHV2815D/883 MHV28512T/883 MHV28515T/883 Flanged SMD numbers for the MHV Series of converters have the suffix HZC instead of HXC. For exact specifications for an SMD product, refer to the SMD drawing available at www.dscc.dla.mil/programs/smcr. Model Selection MHV28 Base model Vout value number of outputs case option screening Choose one from each of the following rows Vout value Number of outputs Case option Screening for singles or duals: 3R3, 5, 12, or 15 “R” = decimal point, 3R3 = 3.3VDC for triples*: 512 or 515 S (single), D (dual) or T (triple) non-flanged case option, leave blank standard screening, leave blank F (flanged case option), /ES (ES screening), /883 (Class H, QML) * for triple models “5” indicates the main voltage, “12” or“15” indicate the ± auxiliary voltages. www.craneae.com Page 5 of 14 Rev D- 20060710 Crane Aerospace & Electronics Power Solutions MHV Single, Dual and Triple DC/DC Converters 28 VOLT INPUT – 15 WATT Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. SINGLE OUTPUT MODELS PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT OUTPUT POWER OUTPUT RIPPLE VOLTAGE LINE REGULATION LOAD REGULATION INPUT VOLTAGE NO LOAD TO FULL1 INPUT CURRENT INPUT RIPPLE CURRENT EFFICIENCY LOAD FAULT2 POWER DISSIPATION SHORT CIRCUIT2 RECOVERY1 STEP LOAD RESPONSE3 START-UP 0 TO 28 VIN STEP LINE RESPONSE1 CAPACITIVE LOAD1 50% – 100% – 50% TRANSIENT RECOVERY DELAY OVERSHOOT 16-50-16 VDC4 TRANSIENT RECOVERY4 175 0.9 200 550 2 200 550 2.5 200 650 2.5 200 mVpk mS μF — — — — — — 14 0 300 1 18 100 — — — — — — 14 0 300 1.5 18 100 — — — — — — 14 0 350 1.3 18 120 — — — — — — 14 0 450 1.3 18 150 mV pk mS ms mV pk — — — — 7 20 — — — — 8 20 — — — — 7 20 — — — — 7 20 W ms VIN = 16 to 50 VDC VIN = 16 to 50 VDC 10 kHz - 2 MHz Tc = –55°C to +125°C VIN = 16 to 50 VDC NO LOAD TO FULL CONTINUOUS TRANSIENT 120 ms NO LOAD INHIBITED 10 kHz - 20 MHz Tc = –55°C to +125°C — 69 10 72 45 — — 74 10 77 40 — — 79 10 81 40 — — 78 10 81 40 — mA pp % — — — 16 — — — 5 0 15 28 — 34 8.4 25 8 30 50 80 42 10 — — — 16 — — — 5 0 15 28 — 44 8.4 25 8 40 50 80 52 10 — — — 16 — — — 5 1 8 28 — 43 8.4 25 10 30 50 75 55 10 — — — 16 — — — 5 4 10 28 — 45 8.4 25 13 35 50 60 62 10 mV p-p mV mV VDC V mA mA CONDITIONS MHV283R3S MIN 3.27 0 0 TYP 3.30 — — MAX 3.33 3.03 10 MHV2805S MIN 4.95 0 0 TYP 5.00 — — MAX 5.05 3.0 15 MHV2812S MIN 11.88 0 0 TYP — — MAX 1.25 15 MHV2815S MIN 0 0 TYP — — MAX 15.15 1.0 15 UNITS VDC A W 12.00 12.12 14.85 15.00 Notes 1. Guaranteed by design, not tested. 2. Load fault is a short circuit (