PRELIMINARY HDC Module HDC300B120x400y-00 Isolated, Regulated DC-DC Converter Features Overview • • • • • • • • • • • • Isolated , regulated DC-to-DC converter Up to 400 W, 33.3 A continuous 93.2% peak efficiency 128 W/in2 power density Wide input range 180 to 420 Vdc ZVS high frequency (MHz) switching n Enables low profile, high-density filtering • Full operation during current limit • OV, OC, UV, short circuit and thermal protection • Through-hole Brick Package Part of the new HD Series of power conversion products Companion models to HDR Regulator Family Input Voltage: 180 to 420 Vdc Output: 12 Vdc Output Current to 33.3 Amperes Agency approvals: CE Mark Product Overview The HDC Isolated, Regulated DC Converter is a DC-to-DC converter, operating from an unregulated, wide range input to generate an isolated 12 Vdc output. With its high frequency zero voltage switching (ZVS) topology, the HDC consistently delivers high efficiency across the input line range. Modular HDC and downstream DC-DC products support efficient power distribution, providing superior power system performance and connectivity from a variety of unregulated power sources to the point-of-load. Part Number Designation Model Input Voltage Package Output Voltage (Nom.) x10 Temperature Grade Power Pin /Base - Rev / Var HDC 300 B 120 x 400 L - 00 HDC = HD Converter Family 300 = 180 - 420 Vdc 120 = (VOUT nominal) x 10 B Series 400 = Max rated output power C = -20°C > TSTG > 100°C, -20°C > TJ > +125°C T = -40°C > TSTG > 100°C, -40°C > TJ > +125°C M = -65°C > TSTG > 100°C, -55°C > TJ > +125°C HDC Module Rev C vicorpower.com Page 1 of 20 5/2014 800 927.9474 L = Flanged baseplate N = Flangeless baseplate 00 = Module CB = Evaluation Board PRELIMINARY HDC300B120x400y-00 Typical Application 12 V +IN +OUT ZVS Buck HDC -IN 3.3, 5, 12 & 15 VOUT -OUT HDR HDC Module Rev C vicorpower.com Page 2 of 20 5/2014 800 927.9474 3.3, 5, 12 & 15 VOUT PRELIMINARY HDC300B120x400y-00 Pin Configuration 1 2 A A’ B’ D’ B F’ C H’ D J’ E C’ E’ G’ I’ K’ Pin Descriptions Pin Number Signal Name Type A1 +IN INPUT POWER B1 FT DIGITAL OUTPUT Fault indicator C1 PC DIGITAL INPUT Primary control D1 NC NO CONNECTION E1 -IN INPUT POWER Negative input power terminal A’2 +OUT OUTPUT POWER Positive output power terminal B’2, D’2 NC NO CONNECTION C’2 +S OUTPUT POWER Positive remote sense E’2 VDD OUTPUT POWER 3.3 V regulated voltage source for trimming F’2 VDDB INPUT POWER G’2 TR ANALOG INPUT VOUT trim reference to SGND H’2 FB DIGITAL OUTPUT Feedback PWM pulses for master-slave array for future use I’2 -S OUTPUT POWER Negative remote sense J’2 SGND GROUND K’2 -OUT OUTPUT POWER Function Positive input power terminal Do not connect to this pin Do not connect to this pin Semi-regulated voltage for future use Signal ground Negative output power terminal HDC Module Rev C vicorpower.com Page 3 of 20 5/2014 800 927.9474 PRELIMINARY HDC300B120x400y-00 Absolute Maximum Ratings Parameter Rating Unit +In to –In voltage -0.5 to 550 Vdc FT to –In -0.5 to 3.6 Vdc PC to –In voltage -0.5 to 3.3 Vdc +Out to –Out voltage, +S to -Out -0.5 to 13.2 Vdc VDD to -Out -0.5 to 3.6 Vdc VDDB to -Out -0.5 to 17.6 Vdc TR to -Out -0.5 to 3.6 Vdc FB to -Out -0.5 to 3.6 Vdc Operating Temperature -55 to +125 °C M-Grade Storage Temperature -65 to +125 °C M-Grade 5 (0.57) in / lbs (N-M) Mounting torque Notes 550 for 100 ms Externally applied 4 each HDC Module Rev C vicorpower.com Page 4 of 20 5/2014 800 927.9474 PRELIMINARY HDC300B120x400y-00 Electrical Specifications Specifications apply over all line, trim and load conditions, TINT (internal) = 25°C, unless otherwise noted. Boldface specifications apply over the temperature range of -40°C < TINT < 125°C. Attribute Symbol Conditions / Notes Min Typ Max Unit 180 300 420 V 5 A Module Input Specifications Input voltage range, continuous operation VIN Inrush current (peak) IINRP External input capacitance CIN-EXT Input inductance (external) LIN Input power – disabled PQ With maximum COUT-EXT, full resistive load, over VIN and trim 0.68 µF Differential mode, with no further line bypassing 10 µH Nominal line 1.5 W 2 W 2.4 W 5 W 12.18 V 13.2 V The total output voltage setpoint accuracy from the calculated ideal Vout based on load, temp and trim 1.5 % Worst case line Nominal line Input power – enabled, no load PNL Worst case line Module Output Specifications Output voltage set point Output voltage trim range VOUT accuracy VOUT VIN = 300, trim inactive, at full load VOUT-TRIMING %VOUT-ACCURACY At full rated load current 11.82 12 7.2 Rated output power POUT Continuous, VOUT ≥ 12, 180 < VIN < 420 400 W Rated output current IOUT Continuous, VOUT ≥ 12, 180 < VIN < 420 33.3 A Output current limit Current limit delay Efficiency IOUT-LIM tIOUT-LIM Low trim, will not shutdown when started into max COUT 38.7 43.1 Nominal trim, will not shutdown when started into max COUT 38.9 41.1 High trim, will not shutdown when started into max COUT 32.5 37.7 The module will power limit in a fast transient event η A 1 ms 93.5 % Full load, nominal line, trim inactive 92.3 Full load, over line and temperature, trim inactive 91.2 % 50% load, over line, temperature and trim 89.5 % Output voltage ripple VOUT-PP Over all operating steady-state line, load and trim conditions, 20 MHz BW with minimum COUT-EXT Output capacitance (external) COUT-EXT Electrolytic capacitor preferred. Excludes component tolerances and temperature coefficient 1000 400 240 mV 10000 µF TBD ms TBD µs 10 % Initialization delay Output turn-on delay tON From rising edge PC, with VIN pre-applied, VOUT no trim Output turn-off delay tOFF From falling edge PC Voltage deviation (transient) Recovery time %VOUT-TRANS tTRANS COUT-EXT = min; (10 to 90% load step), excluding load line. Load transient slew rate up to full load current per ms HDC Module Rev C vicorpower.com Page 5 of 20 5/2014 800 927.9474 500 5 1 ms PRELIMINARY HDC300B120x400y-00 Electrical Specifications (cont.) Specifications apply over all line, trim and load conditions, TINT (internal) = 25°C, unless otherwise noted. Boldface specifications apply over the temperature range of -40°C < TINT < 125°C. Attribute Symbol Conditions / Notes Min Typ Max Unit 155 V Powertrain Protection VIN undervoltage threshold VIN-UVLO- VIN undervoltage recovery threshold VIN-UVLO+ 177 V VIN overvoltage threshold VIN-OVLO+ 455 V VIN overvoltage recovery threshold VIN-OVLO- Overtemperature threshold (internal) TINT-OVP Short circuit, or temperature fault recovery time 125 423 V 125 tFAULT 1 HDC Module Rev C vicorpower.com Page 6 of 20 5/2014 800 927.9474 °C s PRELIMINARY HDC300B120x400y-00 Signal Specifications All specifications valid at 100% rated load and over specified input voltage range at 25°C, unless otherwise indicated. Boldface specifications apply over the temperature range of -40°C < TINT < 125°C. Fault: FT • The fault pin is the Fault flag pin. • When the module is enabled and no fault is present, the FT pin does not have current drive capability. • Whenever the powertrain stops (due to a fault protection or disabling the module by pulling PC low), the FT pin outputs VDD and provides current to drive an external circuit. • When the module starts up, the FT pin is pulled high to VDD during microcontroller initialization and will remain high until soft start process starts SIGNAL TYPE STATE ATTRIBUTE SYMBOL CONDITIONS / NOTES Internally generated VDD FT Inactive FT internal pull up resistance to VDD RFAULT-INACTIVE FT Voltage VFAULT-ACTIVE At load = 4 ma FT current drive capability IFAULT-ACTIVE Over-current FT drive beyond its capability may cause module damage DIGITAL INPUT TYP MAX UNIT 3.21 3.3 3.39 V 9.5 10.0 10.5 kΩ 3.0 V 4 mA tRESPONSE-FAULT After fault detected tRESPONSE-TIME After PC being pulled low tRESPONSE-TIME1 After the module returns to no fault state, the time for FT to become inactive, for input UVLO and OVLO 1 ms tRESPONSE-TIME2 After the module returns to no fault state, the time for FT to become inactive, for other (slower recovery) fault types 1 ms MAX UNIT 2.31 V FT Active FT response time MIN 200 µs 5 µs Primary Control: PC • The PC pin enables and disables the converter; when held low the unit will be disabled. • The PC pin has an internal pull-up to VDD and is referenced to the –IN pin of the converter. SIGNAL TYPE DIGITAL INPUT STATE Any ATTRIBUTE SYMBOL CONDITIONS / NOTES MIN TYP PC enable threshold VPC-EN PC disable threshold VPC-DIS 0.99 VDD 3.21 3.3 3.39 V 9.5 10.0 10.5 kΩ Internally generated VDD PC internal pull up resistance to VDD RENABLE-INT Pull up to VDD HDC Module Rev C vicorpower.com Page 7 of 20 5/2014 800 927.9474 V PRELIMINARY HDC300B120x400y-00 Signal Specifications All specifications valid at 100% rated load and over specified input voltage range at 25°C, unless otherwise indicated. Boldface specifications apply over the temperature range of -40°C < TINT < 125°C. Trim: TR • The TR pin enables and disables trim functionality when VIN is applied to the HDC. TR pin voltage is sampled right before soft start stage during startup • If TR is not floating at power up and has a voltage less than TR trim enable threshold, trim is active • If trim is active, the TR pin provides dynamic trim control with at least 500 Hz of -3 dB control bandwidth over the output voltage of the HDC • The TR pin has an internal pull-up to VDD and is referenced to SGND pin of the converter SIGNAL TYPE STATE ANALOG INPUT Regular FB Peak Voltage VFB Operation PWM Frequency FPWM 3.20 Internally generated VDD VDD 3.23 3.30 3.37 V TR pin analog range VTRIM-RANGE 0 2.486 3.1 V VOUT step resolution VOUT-RES TR internal pull up resistance to VDD RTRIM-INT Operational ANALOG INPUT with Trim enabled ATTRIBUTE SYMBOL CONDITIONS / NOTES MIN With VDD = 3.3 V TYP MAX UNIT 3.15 V V 6.21 mV 5.105 5.11 5.115 kΩ MIN TYP MAX UNIT 3.23 3.30 3.37 V 20 mA MAX UNIT 16 V 18 30 mA TYP MAX UNIT 3.37 V Regulated Voltage: VDD • Regulated supply power • Intended to be used as low current supply for ancillary circuits SIGNAL TYPE STATE ATTRIBUTE SYMBOL POWER OUTPUT Regular VDD Voltage output VVDD_OUT Operation VDD Source current IVDD_OUT CONDITIONS / NOTES Semi-regulated Voltage: VDDB • Unregulated supply power input, required for future products SIGNAL TYPE STATE POWER INPUT Regular Operation ATTRIBUTE SYMBOL VDDB Voltage VVDDB VDDB Current consumption IVDDB CONDITIONS / NOTES MIN TYP 4 VDD pin not loaded Feedback: FB • PWM voltage regulation feedback from Digital Supervisor to DCM • Intended to be used for a parallel array (future option) SIGNAL TYPE STATE DIGITAL OUTPUT Regular Operation ATTRIBUTE SYMBOL CONDITIONS / NOTES MIN FB Peak Voltage VFB 3.3 PWM Frequency FPWM 25 FB PWM Duty Cycle DCFB 1 HDC Module Rev C vicorpower.com Page 8 of 20 5/2014 800 927.9474 kHz 97 % PRELIMINARY HDC300B120x400y-00 Block Diagram +IN +IN FT FT PC PC -IN -IN +OUT +OUT +S DCM -S -OUT -OUT VDD PRI-OUT-A DISO PRI-COM VSP SEC-IN-A SEC-COM VDD TRIM VDDB TR Digital +S Supervisor -S SGND VDDB SGND FB HDC Module Rev C vicorpower.com Page 9 of 20 5/2014 800 927.9474 PRELIMINARY HDC300B120x400y-00 Typical Performance Characteristics The following figures present typical performance at TC = 25ºC, unless otherwise noted. See associated figures for general trend data. Nominal VOUT vs. Temperature Nominal Line, Full Load 14 3.0 13 2.8 Input Current (mA) Output Voltage (V) Input Current vs. Line, Module Disabled, PC = Low 12 11 10 9 8 2.6 2.4 2.2 2.0 1.8 7 1.6 6 -40 -20 0 20 40 60 80 100 180 200 220 240 260 280 300 320 340 360 380 400 420 Baseplate Temperature (°C) Condition: Nominal Trim Input Voltage (V) Minimum trim TCASE: Maximum Trim Figure 2 — VOUT vs. operating temperature trend, at full load -40°C 25°C 100°C Figure 3 — Disabled current consumption vs. VIN and nominal line No Load Power Dissipation vs. Line, Module Enabled - Nominal VOUT 2.8 Power Dissipation (W) 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 180 200 220 240 260 280 300 320 340 360 380 400 420 Input Voltage (V) TCASE: -40°C 25°C 100°C Figure 4 — No load power dissipation vs. VIN, at nominal trim Figure 5 — Initial startup from PC pin, with soft-start ramp. Nominal VIN, COUT_EXT = 10000 uF, full load 93.0 Efficiency & Power Dissipation vs. Load, TCASE = -40°C, Nominal Trim VOUT 95 92.0 Efficiency (%) Efficiiency (%) 93 91.0 90.0 35 91 30 89 87 25 85 20 83 15 81 10 79 5 77 75 89.0 180 200 220 240 260 280 300 320 340 360 380 400 420 Input Voltage (V) TCASE: -40°C 25°C 100°C Figure 6 — Full load efficiency vs. VIN, VOUT = 7.2 V 40 0 5 10 15 20 25 30 35 Power Dissipation (W) Full Load Efficiency vs. Line, Low Trim VOUT 0 Load Current (%) VIN: 180 V 300 V 420 V 180 V 300 V 420 V Figure 7 — VIN to VOUT efficiency and power dissipation vs. VIN and IOUT, TCASE = -40°C HDC Module Rev C vicorpower.com Page 10 of 20 5/2014 800 927.9474 PRELIMINARY HDC300B120x400y-00 Typical Performance Characteristics (Cont.) The following figures present typical performance at TC = 25ºC, unless otherwise noted. See associated figures for general trend data. Efficiency (%) Efficiiency (%) 93.0 92.5 92.0 91.5 91.0 180 200 220 240 260 280 300 320 340 360 380 400 420 Input Voltage (V) TCASE: -40°C 25°C 100°C Figure 8 — Full load efficiency vs. VIN, VOUT = 12 V 95 93 91 89 87 85 83 81 79 77 75 Efficiency & Power Dissipation vs. Load, TCASE = 25°C, Nominal Trim VOUT 40 35 30 25 20 15 10 5 0 5 10 15 20 25 30 35 Power Dissipation (W) 93.5 Full Load Efficiency vs. Line, Nominal Trim VOUT 0 Load Current (%) 180 V VIN: 300 V 420 V 180 V 300 V 420 V Figure 9 — VIN to VOUT efficiency and power dissipation vs. VIN and IOUT, TCASE = 25°C 94.0 Efficiency & Power Dissipation vs. Load, TCASE = 100°C, Nominal Trim VOUT 95 Efficiency (%) Efficiiency (%) 93 93.0 92.0 40 91 35 89 30 87 25 85 20 83 81 15 79 10 77 5 75 91.0 0 180 200 220 240 260 280 300 320 340 360 380 400 420 Input Voltage (V) TCASE: -40°C 25°C 100°C Figure 10 — Full load efficiency vs. VIN, VOUT = 13.2 V 45 5 10 15 20 25 30 35 Power Dissipation (W) Full Load Efficiency vs. Line, High Trim VOUT 0 Load Current (%) VIN: 180 V 300 V 420 V 180 V 300 V 420 V Figure 11 — VIN to VOUT efficiency and power dissipation vs. VIN and IOUT, TCASE = 100°C Figure 12 — 10% to 100% load transient response, VIN = 300 V, Figure 13 — 100% to 10% load transient response, VIN = 300 V, nominal trim, COUT_EXT = 1000 µF nominal trim, COUT_EXT = 1000 µF HDC Module Rev C vicorpower.com Page 11 of 20 5/2014 800 927.9474 PRELIMINARY HDC300B120x400y-00 Typical Performance Characteristics (Cont.) The following figures present typical performance at TC = 25ºC, unless otherwise noted. See associated figures for general trend data. Figure 14 — Typical output voltage ripple, VIN = 300 V, VOUT = 12 V, COUT_EXT = 1000 µF, full load HDC Module Rev C vicorpower.com Page 12 of 20 5/2014 800 927.9474 PRELIMINARY HDC300B120x400y-00 General Characteristics Specifications apply over all line, trim and load conditions, TINT (internal) = 25°C, unless otherwise noted. Boldface specifications apply over the temperature range of -40°C < TINT < 125°C. Attribute Symbol Conditions / Notes Min Typ Max Flanged and flangeless baseplate 56.62 / [2.23] 57.00 / [2.24] 57.39 / [2.26] Flanged baseplate 46.12 / [1.82] 46.50 / [1.83] 46.88 / [1.85] Flangeless baseplate 34.61 / [1.36] 34.99 / [1.38] 35.37 / [1.39] Flanged and flangeless baseplate 15.36 / [0.61] 16.00 / [0.63] 16.36 / [0.66] Unit Mechanical Length L Width W Height H Volume Vol Weight mm/[in] Flanged baseplate 43.00 / [2.63] Flangeless baseplate 35.56 / [2.17] W cm3/[in3] 100 / [3.53] g/[oz] Pin material C145 copper, ½ hard Underplate Nickel 50 100 Pin finish Pure matte tin, whisker resistant chemistry 200 400 -65 125 µin Assembly Storage temperature TST HSM Method per Human Body Model Test JEDEC JESD22-A114C CDM Charged Device Model Test JEDEC JESD22-C101C ESD rating °C CLASS 1C V Reliablity Calculated per Telcordia TR-NT-000332, 25°C MTBF 3.58 MHrs Telcordia Issue 2 - Method I Case 3; 25°C Ground Benigh, Controlled Safety Isolation voltage VHIPOT IN to OUT 4,242 IN to CASE 2,121 OUT to CASE 2,121 Agency Approvals EN 60950-1 Agency approvals/standards CE Marked for Low Voltage Directive and RoHS Recast Directive, as applicable HDC Module Rev C vicorpower.com Page 13 of 20 5/2014 800 927.9474 VDC PRELIMINARY HDC300B120x400y-00 Environmental Qualification Test Description Test Detail HALT (Highly Accelerated Life Testing) EIAJESD22-A110-B Fungus MIL-STD-810F Method 508.5, section II Salt Fog MIL-STD-810F Method 509.4 Solderability MIL-STD-202G Method 208H Terminal Strength MIL-STD-202G Method 211A, condition A Acceleration MIL-STD-202G Method 211A, condition A Altitude MIL-STD-810F Method 500.2, procedures I & II Explosive Atmosphere MIL-STD-810F Method 511.4, procedure I, operational High Temperature Operating Life (HTOL) Vicor internal reference EIAJESD22-A110-B Humidity MIL-STD-810F Method 507.4, 95% Relative Humidity Mechanical Shock MIL-STD-810F, Method 516.5 Procedure I, MIL-S-901D lightweight hammer shock, MILSTD-202F, Method 213B Random Mechanical Vibration MIL-STD-810F, Method 514.5, Procedure I, Category 14, MIL-STD-810F, Method 514C, general minimum integrity Resistance to Solvents MIL-STD-202G, Method 215K Temperature Humidity Bias JESD22-A101-B, 1000hrs Temperature Cycle JESD22-A104-B Thermal Shock MIL-STD-202G, Method 107G, Condition HDC Module Rev C vicorpower.com Page 14 of 20 5/2014 800 927.9474 PRELIMINARY Pin Functions +IN, -IN Input power pins. -IN is the reference for all control pins, and therefore a Kelvin connection is recommended to reduce effects of voltage drop due to -IN currents. +OUT, -OUT HDC300B120x400y-00 If trim is active, the TR pin provides dynamic trim control at a typical 500 Hz of -3dB bandwidth over the output voltage. VOUT set point under full load and room temperature can be calculated using the equation below: VOUT = 1 + 0.171 • ( [ 3.3 • Rtrim ) - 0.425 • VOUT_NOM 5110 + Rtrim ] Output power pins. PC (Primary Control) This pin enables and disables the converter; when held low the unit will be disabled. It is referenced to the -IN pin of the converter. The PC pin has an internal pull-up to VDD_INT through a 10 kΩ resistor. 3.3V n Output enable: When PC is allowed to float above the enable threshold, the module is enabled. If leave PC floating, it is pulled up to VDD and module will be enabled. n Output disable: PC may be pulled down externally in order to 5.11k disable the module. FT (Fault) The FT pin provides a Fault signal. Anytime the module is enabled and has not recognized a fault, the FT pin is inactive. Whenever the powertrain stops (due to a fault protection or disabling the module by pulling PC low), the FT pin becomes active and provides current to drive an external circuit. The FT pin becomes active momentarily when the module starts up. TR Rtrim When active, FT pin drives to VDD, with up to 5 mA of external loading. Module may be damaged from an over-current FT drive, thus a resistor in series for current limiting is recommended. Remote Sense (+S, -S) The Remote Sense pins sense the voltage at the load and adjusts the converter output voltage to compensate for the voltage drop in the leads/traces. The sense leads of the module must always terminate either directly to the output pins (local sense) or at the load (remote sense). VDD 3.3 V regulated voltage for external ancillary circuits. VDDB Semi-regulated voltage for future products. TR (Trim) The TR pin is used to select the trim mode and to trim the output voltage of the converter. The TR pin has an internal pull-up to VDD_INT through a 5.11 kΩ resistor. The converter shall latch trim behavior at application of VIN, and persist in that same behavior until loss of input voltage. n At application of VIN, if TR is sampled at above VTRIM-DIS, the module shall latch in a non-trim mode, and will ignore the TR input for as long as VIN is present. n At application of VIN, if TR is sampled at below VTRIM-EN, the TR Rtrim = 1,277,500 • (-40 VOUT + 23 VOUT_NOM ) 10,000 VOUT - 11,393 VOUT_NOM FB (Feedback) The FB pin produces PWM pulses whose duty cycle is maintained by the internal Digital Supervisor to regulate the output voltage. This pin will be used for paralleling modules to create high current/power arrays in the future. SGND Signal ground for referencing all control circuitry. Soft Start The first time the HDC starts after application of input voltage, it will go through a soft start sequence. Notice that the module will only startup if input voltage is inside the range of VIN-FULL-POWER. After startup, the module can then operate in the entire VIN range. will serve as an input to control real time output voltage trim. It will persist in this behavior until VIN is no longer present. This soft start sequence permits initial startup into a completely discharged load capacitance. The soft start sequence ramps the output voltage by modulating the internal error amplifier reference. HDC Module Rev C vicorpower.com Page 15 of 20 5/2014 800 927.9474 PRELIMINARY This causes the output voltage to approximate a piecewise linear ramp. The output ramp finishes then the voltage reaches either the nominal output voltage or the trimmed output voltage in cases where trim mode is active. An HDC recovering from any fault condition does not assume that the output capacitance has remained charged. Just as with its initial startup sequence when VIN is first applied, it will again execute the soft start ramp. Output Current Limit The HDC features a fully operational current limit which effectively keeps the module operating inside the Safe Operating Area (SOA) for all valid trim and load profiles. The current limit approximates a “brick wall” limit, where the output current is prevented from exceeding the current limit threshold by reducing the output voltage via the internal error amplifier reference. Output Overload protection threshold is typically 105% of maximum output current, and can vary from 100% to 120% of maximum output current. When the output current exceeds the current limit threshold, current limit action is postponed by 1ms, which permits the converter to momentarily deliver higher peak output currents to the load. Peak output power during this time is still constrained by the internal Power Limit of the module. The fast Power Limit and relatively slow Current Limit work together to keep the module inside the SOA. Delaying entry into current limit also permits the converter to minimize droop voltage for load steps. Sustained operation in current limit is permitted, and no derating of output power is required in an array. Some applications may benefit from well matched current distribution, in which case fine tuning sharing via the trim pins permits control over sharing. The converter does not require this for proper operation, due to the power limit and current limit behaviors described here. Current limit can reduce the output voltage to as little as the UVP threshold (VOUT-UVP). Below this minimum output voltage compliance level, further loading will cause the module to shut down due to the output undervoltage fault protection. Line Impedance and Output Stability Requirements Connect a high-quality, low-noise power supply to the +IN and –IN terminals. The interconnect cables can be up to 1 meter long each way, and up to 0.1 m apart between each other. Additional capacitance may have to be added between +IN and –IN to make up for impedances in the interconnect cables as well as deficiencies in the source. Significant source impedance can bring system stability issue for a regulated DC-DC converter and needs to be avoided or compensated. Make sure input voltage slew rate dVin/dt is less than 1 V/us, otherwise a pre-charge circuit is required in the input side to control the charging slew rate. For the HDC, the output voltage stability is guaranteed as long as hold up capacitance COUT falls within the specified ranges. Input Fuse Selection The HDC is not internally fused, see safety approvals for required fusing. HDC300B120x400y-00 Fault Handling Input Undervoltage Fault Protection (UVLO) The converter’s input voltage is monitored to detect an input under voltage condition. If the converter is not already running, then it will ignore enable commands until the input voltage is greater than VIN-UVLO+. If the converter is running and the input voltage falls below VIN-UVLO-, the converter recognizes a fault condition, the powertrain stops switching, and the output voltage of the unit falls. UVLO faults which are shorter than tUVLO may not be detected by the fault sequence logic, in which case the converter may not respond. After a UVLO fault is detected by the fault sequence logic and the converter shuts down as a result, it will wait for the input voltage to rise above VIN-UVLO+. Provided the converter is still enabled, the powertrain will again enter the soft start sequence. Input Overvoltage Fault Protection (OVLO) The converter’s input voltage is monitored to detect an input over voltage condition. When the input voltage is more than the VIN-OVLO-, a fault is detected, the powertrain immediately stops switching, and the output voltage of the converter falls. After an OVLO fault occurs, the converter will wait for the input voltage to fall below VIN-OVLO-. Provided the converter is still enabled, the powertrain will again enter the soft start sequence. The powertrain controller itself also monitors the input voltage. Transient OVLO events which have not yet been detected by the fault sequence logic may first be detected by the controller, if the input slew rate is sufficiently large. In this case, powertrain switching will immediately stop. If the input voltage falls back in range before the fault sequence logic detects the out of range condition, the powertrain will resume switching and the fault logic will not interrupt operation Regardless of whether the powertrain is running at the time or not, if the input voltage does not recover from OVLO before tOVLO, the converter fault logic will detect the fault. Output Undervoltage Fault Protection (UVP) The converter determines that an output overload or short circuit condition exists by measuring its primary sensed output voltage. In general, whenever the powertrain is switching and the primarysensed output voltage falls below VOUT-UVP threshold, a short circuit fault will be registered. Once an output undervoltage condition is detected, the powertrain immediately stops switching, and the output voltage of the converter falls. The converter remains disabled for a time tFAULT and then provided the converter is still enabled, the powertrain will again enter the soft start sequence after tINIT and tON. Temperature Fault Protections (OTP) The fault logic monitors the internal temperature of the converter. If the measured temperature goes higher than TINT-OTP, a temperature fault is registered. As with the undervoltage fault protection, once a temperature fault is registered, the powertrain immediately stops switching, the output voltage of the converter falls, and the converter remains disabled for a time tFAULT. Then, the converter waits for the internal temperature to return to below TINT-OTP before recovering. Once recovered, provided the converter is still enabled, the HDC will again enter the soft start sequence after tINIT and tON. HDC Module Rev C vicorpower.com Page 16 of 20 5/2014 800 927.9474 PRELIMINARY Output Overvoltage Fault Protection (OVP) The converter monitors the primary sensed output voltage during switching to detect output OVP. If the primary sensed output voltage exceeds VOUT-OVP, a fault is latched, the logic disables the powertrain, and the output voltage of the converter falls. This type of fault is latched, and the converter will not operate until the latch is cleared. Clearing the fault latch is achieved by either disabling the converter via the PC pin, or else by removing the input power. Burst Mode Under light loading conditions, the HD Converter may operate in burst mode depending on the line voltage. Burst mode occurs whenever the internal power consumption of the converter combined with the external output load is less than the minimum power transfer per switching cycle. To prevent the output voltage from rising in this case, the powertrain is switched off and on repeatedly to effectively lower the average switching frequency, and permit operation with no external load. During the time when the power train is off, the module internal consumption is significantly reduced, and there is a notable reduction in no-load input power in burst mode. Pin Solderability Please refer to the Soldering Methods and Procedures for Vicor Power Modules application note for guidance on soldering the HDC module to printed circuit boards. The application note can be found at: www.vicorpower.com/documents/application_notes/ an_powermodulesoldering.pdf HDC Module Rev C vicorpower.com Page 17 of 20 5/2014 800 927.9474 HDC300B120x400y-00 PRELIMINARY Mechanical Drawings Flanged baseplate HDC Module Rev C vicorpower.com Page 18 of 20 5/2014 800 927.9474 HDC300B120x400y-00 PRELIMINARY HDC300B120x400y-00 Mechanical Drawings (Cont.) 2.275±.015 57.79±.38 .39 10.0 .082 2.08 MAX 4X INPUT SIDE OUTPUT SIDE 1.377±.015 34.99±.38 .042 1.07 MAX 12X .37 9.5 OUTPUT SIDE .630±.025 16.00±.64 .15 3.9 .100±.003 2.54±.08 PLATED THRU HOLE .120 .003 [3.05 .08 ] ANNULAR RING 4X 1.488 37.80 .098 2.50 1 .285 7.25 2 .148 3.75 .060±.003 1.52±.08 PLATED THRU HOLE .080 .003 [2.03 .08] ANNULAR RING 12X .098 2.50 2X 16 15 13 11 3 4 9 14 12 .098 2.50 7X 10 8 7 6 5 .167 4.25 2X RECOMMENDED LAND PATTERN (COMPONENT SIDE SHOWN) Flangeless baseplate HDC Module Rev C vicorpower.com Page 19 of 20 5/2014 800 927.9474 .630 16.00 PRELIMINARY HDC300B120x400y-00 Vicor’s comprehensive line of power solutions includes high density AC-DC and DC-DC modules and accessory components, fully configurable AC-DC and DC-DC power supplies, and complete custom power systems. Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is assumed by Vicor for its use. Vicor makes no representations or warranties with respect to the accuracy or completeness of the contents of this publication. Vicor reserves the right to make changes to any products, specifications, and product descriptions at any time without notice. Information published by Vicor has been checked and is believed to be accurate at the time it was printed; however, Vicor assumes no responsibility for inaccuracies. Testing and other quality controls are used to the extent Vicor deems necessary to support Vicor’s product warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. Specifications are subject to change without notice. Vicor’s Standard Terms and Conditions All sales are subject to Vicor’s Standard Terms and Conditions of Sale, which are available on Vicor’s webpage or upon request. Product Warranty In Vicor’s standard terms and conditions of sale, Vicor warrants that its products are free from non-conformity to its Standard Specifications (the “Express Limited Warranty”). This warranty is extended only to the original Buyer for the period expiring two (2) years after the date of shipment and is not transferable. UNLESS OTHERWISE EXPRESSLY STATED IN A WRITTEN SALES AGREEMENT SIGNED BY A DULY AUTHORIZED VICOR SIGNATORY, VICOR DISCLAIMS ALL REPRESENTATIONS, LIABILITIES, AND WARRANTIES OF ANY KIND (WHETHER ARISING BY IMPLICATION OR BY OPERATION OF LAW) WITH RESPECT TO THE PRODUCTS, INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR REPRESENTATIONS AS TO MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE, INFRINGEMENT OF ANY PATENT, COPYRIGHT, OR OTHER INTELLECTUAL PROPERTY RIGHT, OR ANY OTHER MATTER. This warranty does not extend to products subjected to misuse, accident, or improper application, maintenance, or storage. Vicor shall not be liable for collateral or consequential damage. Vicor disclaims any and all liability arising out of the application or use of any product or circuit and assumes no liability for applications assistance or buyer product design. Buyers are responsible for their products and applications using Vicor products and components. Prior to using or distributing any products that include Vicor components, buyers should provide adequate design, testing and operating safeguards. Vicor will repair or replace defective products in accordance with its own best judgment. For service under this warranty, the buyer must contact Vicor to obtain a Return Material Authorization (RMA) number and shipping instructions. Products returned without prior authorization will be returned to the buyer. The buyer will pay all charges incurred in returning the product to the factory. Vicor will pay all reshipment charges if the product was defective within the terms of this warranty. Life Support Policy VICOR’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS PRIOR WRITTEN APPROVAL OF THE CHIEF EXECUTIVE OFFICER AND GENERAL COUNSEL OF VICOR CORPORATION. As used herein, life support devices or systems are devices which (a) are intended for surgical implant into the body, or (b) support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to the user. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness. Per Vicor Terms and Conditions of Sale, the user of Vicor products and components in life support applications assumes all risks of such use and indemnifies Vicor against all liability and damages. Intellectual Property Notice Vicor and its subsidiaries own Intellectual Property (including issued U.S. and Foreign Patents and pending patent applications) relating to the products described in this data sheet. No license, whether express, implied, or arising by estoppel or otherwise, to any intellectual property rights is granted by this document. Interested parties should contact Vicor's Intellectual Property Department. The products described on this data sheet are protected by the following U.S. Patents Numbers: RE40,072; 7,561,446; 7,920,391; 7,782,639; 8,427,269; 6,421,262 and other patents pending. Vicor Corporation 25 Frontage Road Andover, MA, USA 01810 Tel: 800-735-6200 Fax: 978-475-6715 email Customer Service: [email protected] Technical Support: [email protected] HDC Module Rev C vicorpower.com Page 20 of 20 5/2014 800 927.9474