Technical Specification BQ60120HEx30 35-75V 12V 30A 360W 2250V dc Half-brick Input Output Current Power Isolation DC-DC Converter ® The BusQor® BQ60120HEx30 Exa series converter is a next-generation, board-mountable, isolated, wide input, regulated, fixed switching frequency DC-DC converter that uses synchronous rectification to achieve extremely high conversion efficiency. The BusQor Exa series provides an isolated step down voltage from 35-75V to 12V with tight output voltage regulation in a standard “half-brick” module and is available in open-frame and baseplated version. BusQor converters are ideal for customers who need multiple outputs and wish to use point of load converters to work with a 12V rail. The BusQor Exa series converters offer industry-leading useable output current for powering intermediate bus architechture systems. RoHS 6/6 compliant (see page last page). BQ60120HEx30 Model Operational Features Mechanical Features • Ultra-high efficiency, 95% at full rated load current • Delivers 30A of current at (360W) full power with minimal derating - no heatsink required • Wide operating input voltage range: 35-75V with 100V 100ms input voltage transient withstand capability • Fixed frequency switching provides predictable EMI Control Features • On/Off control referenced to input side (positive and negative logic options are available) • Remote sense for the output voltage compensates for output distribution drops • Output voltage trim down to 6.0V permits custom voltages and voltage margining (+5%/-50%) • Short startup inhibit time Safety Features • UL 60950-1/R2011-12 • EN60950-1/A2:2013 • CAN/CSA-C22.2 No. 60950-1/A1:2011 Product # BQ60120HEx30 Phone 1-888-567-9596 • Industry standard half-brick pin-out configuration • Size: 2.4” x 2.3” (61.0x58.4mm), height: 0.422” (10.72mm) • Total open frame weight: 2.6 oz (75g) Protection Features • • • • • Input under-voltage lockout Output current limit and short circuit protection Output over-voltage protection Thermal shutdown Backdrive protection prevents excessive negative current flow Contents Page No. Open Frame Mechanical Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Baseplated Mechanical Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Compliance & Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Technical Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Applications Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 www.synqor.com Doc.# 005-2BH612M Rev. F 10/01/15 Page 1 Input: 35-75V Output: 12V Current: 30A Package: Half-brick Open Frame Mechanical Diagram 2.40 [61 ] .422 ±.030 [10.72±0.76] OVERALL HEIGHT 1.400 [35.56] 1.000 [25.4] .700 [17.78] 8 7 6 EACH EXPOSED COPPER STAPLE CONNECTED TO ADJACENT PIN 5 AND 9 SEE NOTE 7 .010 ±0.09 [0.25±0.22] BOTTOMSIDE CLEARANCE .400 [10.16] 9 BOTTOM VIEW 5 1 2.30 [58.4] 2 4 1.90 [48.3] .31 [7.8] .19 [4.8] 1 2 .11 [2.7] 4 .50 [12.7] .180 [4.57] SEE NOTE 6 .400[10.16] 7 6 5 .85 [21.7] 1.55 [39.3] SIDE VIEW 1.90 [48.2] NOTES PIN DESIGNATIONS 1) Pins 1, 2 4, 6-8 are 0.040" (1.02mm) diameter with 0.080" (2.03mm) diameter standoff shoulders 2) Pins 5 and 9 are 0.080" (2.03mm) diameter shoulderless pin. 3) Other pin extension lengths available 4) All pins: Material: Copper Alloy Finish: Matte Tin over Nickel plate 5) Undimensioned components are shown for visual reference only 6) Weight: 2.6 oz (75g) typical 7) All dimensions in inches (mm) Tolerances: x.xx in +/-0.02 (x.x mm +/-0.5mm) x.xxx in +/-0.010 (x.xx mm +/-0.25mm) 8) Same net planes recommended on customer board in designated areas adjacent to Pin 5 and 9, as worst case bottom side clearance could cause exposed copper staple to touch customer board surface. 9) Workmanship: Meets or exceeds IPC-A-610C Class II Product # BQ60120HEx30 8 .50 [12.7] 1.400 [5.56] TOP VIEW 9 Phone 1-888-567-9596 Pin Name Function 1 Vin(+) 2 ON/OFF Positive input voltage TTL input to turn converter on and off, referenced to Vin(-), with internal pull up. Negative input Negative output Return remote sense Output voltage trim Positive remote sense Positive output 4 Vin(–) 5 Vout(–) 6 Sense(–) Trim 7 8 Sense(+) 9 Vout(+) www.synqor.com Doc.# 005-2BH612M Rev. F 10/01/15 Page 2 Input: 35-75V Output: 12V Current: 30A Package: Half-brick Baseplated Mechanical Diagram 2.40 [61 ] 2.00 [50.8] 1.400 [35.56] 1.000 [25.4] .700 [17.78] .400 [10.16] .506 ±.030 [12.85±0.76] OVERALL HEIGHT .20 [5.1] 9 2.30 [58.4] 1.90 [48.3] 8 7 6 5 2 1 4 M3 THREADED INSERT 4 PLACES SEE NOTE 1 1.90 [48.3] .31 [7.8] .19 [4.8] 1 2 9 4 .50 [12.7] .400[10.16] 1.00 [25.4] 1.400 [35.56] 8 7 6 .50 [12.7] .180 [4.57] SEE NOTE 6 SIDE VIEW TOP VIEW BOTTOM VIEW NOTES .11 [2.7] 5 .85 [21.7] 1.55 [39.3] 1.90 [48.2] PIN DESIGNATIONS 1) M3 screws used to bolt the unit's baseplate to other surfaces such as heatsinks must not exceed 0.100" (2.54mm) depth below the surface of the baseplate. 2) Applied torque per screw should not exceed 6in-lb (0.7Nm). 3) Baseplate flatness tolerance is 0.004" (.10mm) TIR for surface 4) Pins 1, 2 4, 6-8 are 0.040" (1.02mm) diameter with 0.080" (2.03mm) diameter standoff shoulders 5) Pins 5 and 9 are 0.080" (2.03mm) diameter shoulderless pin. 6) Other pin extension lengths available 7) All pins: Material: Copper Alloy Finish: Matte Tin over Nickel plate 8) Undimensioned components are shown for visual reference only 9) Weight: 3.8 oz (108g) typical 10) All dimensions in inches (mm) Tolerances: x.xx in +/-0.02 (x.x mm +/-0.5mm) x.xxx in +/-0.010 (x.xx mm +/-0.25mm) 11) Same net planes recommended on customer board in designated areas adjacent to Pin 5 and 9, as worst case bottom side clearance could cause exposed copper staple to touch customer board surface. 12) Workmanship: Meets or exceeds IPC-A-610C Class II Product # BQ60120HEx30 EACH EXPOSED COPPER STAPLE CONNECTED TO ADJACENT PIN 5 AND 9 SEE NOTE 11 .010 ±0.09 [0.25±0.22] BOTTOMSIDE CLEARANCE Phone 1-888-567-9596 Pin Name Function 1 Vin(+) 2 ON/OFF Positive input voltage TTL input to turn converter on and off, referenced to Vin(-), with internal pull up. Negative input Negative output Return remote sense Output voltage trim Positive remote sense Positive output 4 Vin(–) 5 Vout(–) 6 Sense(–) Trim 7 8 Sense(+) 9 Vout(+) www.synqor.com Doc.# 005-2BH612M Rev. F 10/01/15 Page 3 Input: 35-75V Output: 12V Current: 30A Package: Half-brick Technical Specification BQ60120HEx30 Electrical Characteristics Ta = 25 °C, airflow rate = 300 LFM, Vin = 48 dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C ambient temperature with appropriate power derating. Specifications subject to change without notice. Parameter Min. ABSOLUTE MAXIMUM RATINGS Input Voltage Non-Operating Operating Operating Transient Protection Isolation Voltage (Input to Output) Operating Temperature Storage Temperature INPUT CHARACTERISTICS Operating Input Voltage Range Input Under-Voltage Lockout Turn-On Voltage Threshold Turn-Off Voltage Threshold Lockout Voltage Hysteresis Maximum Input Current No-Load Input Current Disabled Input Current Input Reflected-Ripple Current Input Terminal-Ripple Current Recommended Input Fuse (see Note 1) Input Filter Component Values (C\L\C) Output Filter Component Values (Lout\Cout) Recommended External Input Capacitance Recommended External Input Capacitor ESR OUTPUT CHARACTERISTICS Output Voltage Set Point Output Voltage Regulation Over Line Over Load Over Temperature Total Output Voltage Range Output Voltage Ripple and Noise Peak-to-Peak RMS Operating Output Current Range Output DC Current-Limit Inception Back-Drive Current Limit while Enabled Back-Drive Current Limit while Disabled Maximum Output Capacitance Start-up Output Voltage Overshoot (with max. cap.) Recommended External Output Capacitance EFFICIENCY 100% Load 50% Load Product # BQ60120HEx30 Typ. -1 -40 -45 Max. Units Notes & Conditions 100 80 100 2250 100 125 V V V °C °C 35 48 75 V 31.5 29.5 33.5 30.5 3.0 34.4 32.4 V V V A mA mA mA mA A μF\μH\μF nH\μF µF 140 30 20 130 11.6 180 65 40 20 100 0.04 0\1.0\5.0 100\90 100 0.2 1.5 Ω 11.88 12.00 12.12 V ±0.05\6 ±0.1\12 ±45 ±0.1\12 ±0.2\24 ±90 12.33 %\mV %\mV mV V 120 40 30 40 3.2 0.6 >10,000 mV mV A 11.75 60 20 0 34 0.8 Phone 1-888-567-9596 37 1.8 0.3 0 44 95 95 www.synqor.com A A A µF % µF Continuous Continuous 100% Load, 35 Vin, trimmed up 5% RMS thruough inductor; Figures 15 & 17 RMS; Figures 15 & 16 Fast blow external fuse recommended Internal values; see Figure D Internal values; see Figure D Typical ESR 0.1-0.2 Ω 100kHz, -40°C to 100°C; see note 1 Over sample, line, load, temperature & life 44μF local ceramic, Figures 15 & 18 Full Load; Figures 15 & 18 Full Load; Figures 15 & 18 Subject to thermal derating; Figures 7 - 10 Output Voltage 10% Low; Figure 19 Negative current drawn from output Negative current drawn from output 12Vout at 30A resistive load 10,000μF, Iout=30A resistive load Local ceramic % % Doc.# 005-2BH612M Rev. F 10/01/15 Page 4 Input: 35-75V Output: 12V Current: 30A Package: Half-brick Technical Specification BQ60120HEx30 Electrical Characteristics (continued) Ta = 25 °C, airflow rate = 300 LFM, Vin = 48 dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C ambient temperature with appropriate power derating. Specifications subject to change without notice. Parameter FEATURE CHARACTERISTICS Switching Frequency Regulation Stage Switching Frequency Isolation Stage ON/OFF Control (Option P) Off-State Voltage On-State Voltage ON/OFF Control (Option N) Off-State Voltage On-State Voltage Min. Typ. Max. 270 135 300 150 330 165 kHz kHz -2 3.5 0.8 18 V V 2.7 -2 18 0.8 V V 6 V kΩ % % % °C ON/OFF Control (Either Option) Pull-Up Voltage 4.5 Pull-Up Resistance Output Voltage Trim Range -50 Output Over-Voltage Protection 113 Over-Temperature Shutdown OTP Trip Point Over-Temperature Shutdown Restart Hysteresis Load Current Scale Factor DYNAMIC CHARACTERISTICS Input Voltage Ripple Rejection Output Voltage during Load Current Transient Step Change in Output Current (0.1 A/µs) For a Step Change in Output Current (5A/μs) Settling Time Turn-On Transient Turn-On Time 8 Start-Up Inhibit Time 2 TEMPERATURE LIMITS FOR POWER DERATING CURVES Semiconductor Junction Temperature Board Temperature Transformer Temperature Maximum Baseplate Temperature Limit ISOLATION CHARACTERISTICS Isolation Voltage (dielectric strength) Isolation Resistance Isolation Capacitance RELIABILITY CHARACTERISTICS Calculated MTBF (Telcordia) TR-NWT-000332 Calculated MTBF (MIL-217) MIL-HDBK-217F Field Demonstrated MTBF Units Notes & Conditions Synchronous to regulation stage Figure A 5 10 118 120 10 600 +5 123 Measured across Pins 9 & 5; Figure B Over full temp range; % of nominal Vout Average PCB Temperature See App Note: Output Load Current Calc. 80 dB 120 Hz; Figure 22 300 500 100 mV mV µs 50% to 75% to 50% Iout max; Figure 13 50% to 75% to 50% Iout max; Figure 14 To within 1% Vout nom 20 4 ms ms Half load, Vout=90% nom. -40 °C to +125 °C 125 125 125 100 °C °C °C °C Package rated to 150°C UL rated max operating temp 130°C See Figures 7 - 10 for derating curves Applies to BQ60120HEB30 only 14 3 2250 30 1000 1.9 1.4 V MΩ pF 106 Hrs. 80% load, 300LFM, 40 °C Ta 106 Hrs. 80% load, 300LFM, 40 °C Ta 106 Hrs. See our website for details Note 1: Electrolytic capacitor ESR tends to increase dramatically at low temperature. Product # BQ60120HEx30 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2BH612M Rev. F 10/01/15 Page 5 Input: 35-75V Output: 12V Current: 30A Package: Half-brick Technical Specification Compliance & Testing Parameter Notes & Conditions STANDARDS COMPLIANCE UL 60950-1/R2011-12 Basic insulation EN60950-1/A2:2013 CAN/CSA-C22.2 No. 60950-1/A1:2011 Note: An external input fuse must always be used to meet these safety requirements. Contact SynQor for official safety certificates on new releases or download from the SynQor website. Parameter QUALIFICATION TESTING Life Test Vibration Mechanical Shock Temperature Cycling Power/Thermal Cycling Design Marginality Humidity Solderability Product # BQ60120HEx30 # Units 32 5 5 10 5 5 5 15 pins Phone 1-888-567-9596 Test Conditions 95% rated Vin and load, units at derating point, 1000 hours 10-55 Hz sweep, 0.060" total excursion, 1 min./sweep, 120 sweeps for 3 axis 100g minimum, 2 drops in x, y and z axis -40 °C to 100 °C, unit temp. ramp 15 °C/min., 500 cycles Toperating = min to max, Vin = min to max, full load, 100 cycles Tmin-10 °C to Tmax+10 °C, 5 °C steps, Vin = min to max, 0-105% load 85 °C, 95% RH, 1000 hours, continuous Vin applied except 5 min/day MIL-STD-883, method 2003 www.synqor.com Doc.# 005-2BH612M Rev. F 10/01/15 Page 6 Input: 35-75V Output: 12V Current: 30A Package: Half-brick Technical Figures 100 22 20 18 Power Dissipation (W) Efficiency (%) 95 90 85 80 35 Vin 75 16 14 12 10 8 6 35 Vin 4 48 Vin 48 Vin 2 75 Vin 75 Vin 0 70 0 3 6 9 12 15 18 21 24 27 0 30 3 6 9 Load Current (A) 12 15 18 21 24 27 30 Load Current (A) Figure 1: Efficiency at nominal 12V output vs. load current for minimum, nominal, and maximum input voltage at 25°C. Figure 2: Power dissipation at nominql 12V output vs. load current for minimum, nominal, and maximum input voltage at 25°C. 100 22 20 18 Power Dissipation (W) Efficiency (%) 95 90 85 80 35 Vin 75 70 6 9 12 15 18 21 24 27 12 10 8 6 35 Vin 48 Vin 2 75 Vin 3 14 4 48 Vin 0 16 75 Vin 0 30 0 3 6 9 12 15 18 21 24 27 30 Load Current (A) Load Current (A) Figure 3: Efficiency at trimmed-down 9.0V output vs. load current for minimum, nominal, and maximum input voltage at 25°C. Figure 4: Power dissipation at trimmed-down 9.0V output vs. load current for minimum, nominal, and maximum input voltage at 25°C. 22 100 20 18 Power Dissipation (W) Efficiency (%) 95 90 85 80 35 Vin 75 16 14 12 10 8 6 48 Vin 4 75 Vin 2 35 Vin 48 Vin 75 Vin 0 70 0 3 6 9 12 15 18 21 24 27 0 30 Load Current (A) Phone 1-888-567-9596 6 Semiconductor junction is 9 12 15 18 temperature 21 24 within 1°C of surface temperature 27 30 Load Current (A) Figure 5: Efficiency at trimmed-down 6.0V output vs. load current for minimum, nominal, and maximum input voltage at 25°C. Product # BQ60120HEx30 3 Figure 6: Power dissipation at trimmed-down 6.0V output vs. load current for minimum, nominal, and maximum input voltage at 25°C. www.synqor.com Doc.# 005-2BH612M Rev. F 10/01/15 Page 7 Input: 35-75V Output: 12V Current: 30A Package: Half-brick Technical Figures 30 25 Iout (A) 20 15 10 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 5 100 LFM (0.5 m/s) 0 0 25 40 55 70 Ambient Air Temperature (ºC) 85 Figure 7: Max output power derating curves vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM with air flowing across the converter from input to output (nominal input voltage). Figure 8: Thermal plot of converter at 25 amp load current (300W) with 55°C air flowing at the rate of 200 LFM. Air is flowing across the converter from input to output (nominal input voltage). 30 25 Iout (A) 20 15 10 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 5 100 LFM (0.5 m/s) 0 0 25 40 55 Ambient Air Temperature (ºC) 70 85 Figure 9: Max output power derating curves vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM with air flowing from pin 1 to pin 4 (nominal input voltage). Figure 10: Thermal plot of converter at 24.5 amp load current (294W) with 55°C air flowing at the rate of 200 LFM. Air is flowing across the converter from pin 1 to pin 4 (nominal input voltage). Figure 11: Turn-on transient at full load (resistive load) (10 ms/div). Input voltage pre-applied. Top Trace: Vout (5V/div). Bottom Trace: ON/OFF input (5V/ div) Figure 12: Turn-on transient at zero load (10 ms/div). Top Trace: Vout (5V/div). Bottom Trace: ON/OFF input (5V/div). Product # BQ60120HEx30 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2BH612M Rev. F 10/01/15 Page 8 Input: 35-75V Output: 12V Current: 30A Package: Half-brick Technical Figures Figure 13: Output voltage response to step-change in load current (50%-75%50% of Iout(max); dI/dt = 0.1A/μ s). Load cap: 47 μF ceramic cap. Top trace: Vout (500mV/div), Bottom trace: Iout (10A/div). Figure 14:Output voltage response to step-change in load current (50%-75%50% of Iout(max): dI/dt = 5A/μ s). Load cap: 470 μF, 15 mΩ ESR tantalum cap and 47 μF ceramic cap. Top trace: Vout (500mV/div), Bottom trace: Iout (10A/ div). Figure 15:Test set-up diagram showing measurement points for Input Terminal Ripple Current (Fig 16), Input Reflected Ripple Current (Fig 17) and Output Voltage Ripple (Fig 18). Figure 16: Input terminal ripple current, ic, at full rated output current and nominal input voltage with 4.7 μH source impedance and 100 μF electrolytic capacitor (100 mA/div). (Fig 15) Figure 17: Input reflected ripple current, is, through a 4.7 μH source inductor at nominal input voltage and rated load current (10mA/div). (Fig 15) Figure 18: Output voltage ripple at nominal input voltage and rated load current (20mV/div). Load capacitance: 2x22 μF ceramic capacitor. Bandwidth: 500 MHz. (Fig 15) Product # BQ60120HEx30 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2BH612M Rev. F 10/01/15 Page 9 Input: 35-75V Output: 12V Current: 30A Package: Half-brick Technical Figures 16 OVP Shutdown Output Voltage (V) 14 12 10 8 6 4 35 - 75 Vin 2 0 -5 0 5 10 15 20 25 30 35 40 45 Load Current (A) Figure 19: Output voltage vs. load current showing typical current limit curves and OVP shutdown point. Figure 20: Load current (10A/div) as a function of time when the converter attempts to turn on into a 1mΩ short circuit. 0 1 -10 -20 Forward Transmission (dB) Output Impedance (Ω) 0.1 0.01 35 Vin 0.001 48 Vin -30 -40 -50 -60 -70 -80 35 Vin 48 Vin -90 75 Vin 75 Vin -100 -110 0.0001 100 1,000 Hz 10,000 100 100,000 Figure 21: Magnitude of incremental output impedance (Zout = vout/iout) for minimum, nominal, and maximum input voltage at full rated power. 1,000 Hz 10,000 100,000 Figure 22: Magnitude of incremental forward transmission (FT = vout/vin) for minimum, nominal, and maximum input voltage at full rated power. 100 20 10 0 Input Impedance (Ω) Reverse Transmission (dB) 10 -10 -20 35 Vin 0.1 35 Vin -30 1 48 Vin 48 Vin 75 Vin 75 Vin 0.01 100 -40 100 1,000 Hz 10,000 100,000 Figure 23: Magnitude of incremental reverse transmission (RT = iin/iout) for minimum, nominal, and maximum input voltage at full rated power. Product # BQ60120HEx30 Phone 1-888-567-9596 1,000 Hz 10,000 100,000 Figure 24: Magnitude of incremental input impedance (Zin = vin/iin) for minimum, nominal, and maximum input voltage at full rated power. www.synqor.com Doc.# 005-2BH612M Rev. F 10/01/15 Page 10 Input: 35-75V Output: 12V Current: 30A Package: Half-brick Applications Section BASIC OPERATION AND FEATURES CONTROL FEATURES This converter series uses a two-stage power conversion topology. The first stage keeps the output voltage constant over variations in line, load, and temperature. The second stage uses a transformer to provide the functions of input/output isolation and voltage stepdown to achieve the low output voltage required. REMOTE ON/OFF (Pin 2): The ON/OFF input, Pin 2, permits the user to control when the converter is on or off. This input is referenced to the return terminal of the input bus, Vin(-). Both the first stage and the second stage switch at a fixed frequency for predictable EMI performance. Rectification of the transformer’s output is accomplished with synchronous rectifiers. These devices, which are MOSFETs with a very low on-state resistance, dissipate significantly less energy than Schottky diodes, enabling the converter to achieve high efficiency. Dissipation throughout the converter is so low that it does not require a heatsink for operation in many applications; however, adding a heatsink provides improved thermal derating performance in extreme situations. See Ordering Information page for available thermal design options. SynQor converters use the industry standard footprint and pinout. ON/OFF ON/OFF ON/OFF In negative logic versions, the ON/OFF signal is active low (meaning that a low voltage turns the converter on). In positive logic versions, the ON/OFF input is active high (meaning that a high voltage turns the converter on). Figure A details possible circuits for driving the ON/OFF pin. See Ordering Information page for available enable logics. REMOTE SENSE Pins 8(+) and 6(-): The SENSE(+) and SENSE(-) inputs correct for voltage drops along the conductors that connect the converter’s output pins to the load. Pin 8 should be connected to Vout(+) and Pin 6 should be connected to Vout(-) at the point on the board where regulation is desired. If these connections are not made, the converter will deliver an output voltage that is slightly higher than its specified value. OUTPUT VOLTAGE TRIM (Pin 7): The TRIM input permits the user to adjust the output voltage across the sense leads up or down according to the trim range specifications. SynQor uses industry standard trim equations. To decrease the output voltage, the user should connect a resistor between Pin 7 and Pin 6 (SENSE(-) input). For a desired decrease of the nominal output voltage, the value of the resistor should be: Rtrim-down = ( 100% Δ% )–2 Δ% = | Vnominal – Vdesired Vnominal kΩ where Vin(_) Vin(_) Remote Enable Circuit Negative Logic (Permanently Enabled) 5V ON/OFF Vin(_) Positive Logic (Permanently Enabled) TTL/ CMOS To increase the output voltage, the user should connect a resistor between Pin 7 and Pin 8 (SENSE(+) input). For a desired increase of the nominal output voltage, the value of the resistor should be: ON/OFF Rtrim-up = ( ) Vnominal – 2 × Vdesired + Vnominal kΩ 1.225 Vdesired – Vnominal Vin(_) Vin(_) Open Collector Enable Circuit | × 100% Direct Logic Drive Figure A: Various Circuits for Driving the ON/OFF Pin. Product # BQ60120HEx30 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2BH612M Rev. F 10/01/15 Page 11 Input: 35-75V Output: 12V Current: 30A Package: Half-brick Applications Section 0 5 10 15 20 25 30 35 40 45 50 10,000.0 Trim Resistance (kOhms) 1,000.0 100.0 10.0 1.0 Input Under-Voltage Lockout: The converter is designed to turn off when the input voltage is too low, helping to avoid an input system instability problem, which is described in more detail in the application note titled “Input System Instability” on www.SynQor. com. The lockout circuitry is a comparator with DC hysteresis. When the input voltage is rising, it must exceed the typical “TurnOn Voltage Threshold”* before the converter will turn on. Once the converter is on, the input voltage must fall below the typical “Turn-Off Voltage Threshold”* before the converter will turn off. Output Current Limit: If the output current exceeds the “Output DC Current Limit Inception” point*, then a fast linear current limit controller will reduce the output voltage to maintain a constant output current. There is no minimum operating output voltage. The converter will run with low on-board power dissipation down to zero output voltage. A redundant circuit will shutdown the converter if the primary current limit fails. 0.1 0.0 % Increase in Vout Protection Features % Decrease in Vout Figure B: Trim Graph. The Trim Graph in Figure B shows the relationship between the trim resistor value and Rtrim-up and Rtrim-down, showing the total range the output voltage can be trimmed up or down. Note: The TRIM feature does not affect the voltage at which the output over-voltage protection circuit is triggered. Trimming the output voltage too high may cause the over-voltage protection circuit to engage, particularly during transients. It is not necessary for the user to add capacitance at the TRIM pin. The node is internally filtered to eliminate noise. Total DC Variation of Vout: For the converter to meet its full specifications, the maximum variation of the DC value of Vout, due to both trimming and remote load voltage drops, should not be greater than that specified for the output voltage trim range. Back-Drive Current Limit: If there is negative output current of a magnitude larger than the "Back-Drive Current Limit while Enabled" specification*, then a fast back-drive limit controller will increase the output voltage to maintain a constant output current. If this results in the output voltage exceeding the "Output OverVoltage Protection" threshold*, then the unit will shut down. The full I-V output characteristics can be seen in Figure 19. Output Over-Voltage Limit: If the voltage across the output pins exceeds the “Output Over-Voltage Protection” threshold*, the converter will immediately stop switching. This prevents damage to the load circuit due to 1) excessive series resistance in output current path from converter output pins to sense point, 2) a release of a short-circuit condition, or 3) a release of a current limit condition. Load capacitance determines exactly how high the output voltage will rise in response to these conditions. Over-Temperature Shutdown: A temperature sensor on the converter senses the average temperature of the module. The thermal shutdown circuit is designed to turn the converter off when the temperature at the sensed location reaches the OverTemperature Shutdown value. It will allow the converter to turn on again when the temperature of the sensed location falls by the amount of the Over-Temperature Shutdown Restart Hysteresis value. Startup Inhibit Period: If any protection feature causes the converter to shut down, the converter will attempt to restart after 2ms (typical), the "Startup Inhibit Period".* On initial application of input voltage, with the ON/OFF pin set to enable the converter, the "Turn-On Time"* will increase by only 2ms. *See specifications page Product # BQ60120HEx30 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2BH612M Rev. F 10/01/15 Page 12 Input: 35-75V Output: 12V Current: 30A Package: Half-brick Applications Section APPLICATION CONSIDERATIONS Input System Instability: This condition can occur because any DC-DC converter appears incrementally as a negative resistance load. A detailed application note titled “Input System Instability” is available on www.SynQor.com which provides an understanding of why this instability arises, and shows the preferred solution for correcting it. Application Circuits: A typical circuit diagram, Figure C below details the input filtering and voltage trimming. Vin(+) Vin External Input Filter Electrolytic Capacitor 100μF ESR =~ 0.2Ω Vout(+) Vsense(+) Trim ON/OFF 2 x 22μF local ceramic Rtrim-up or Rtrim-down Vsense(-) Vin(-) Cload Iload Vout(-) Figure C: Typical Application Circuit (negative logic unit, permanently enabled). Input Filtering and External Input Capacitance: Figure D below shows the internal input filter components. This filter dramatically reduces input terminal ripple current, which otherwise could exceed the rating of an external electrolytic input capacitor. The recommended external input capacitance is specified in the Input Characteristics section of the Electrical Characteristics. More detailed information is available in the application note titled “EMI Characteristics”, www.SynQor.com. Output Filtering and External Output Capacitance: Figure D below shows the internal output filter components. This filter dramatically reduces output voltage ripple. However, some minimum external output capacitance is required, as specified in the Output Characteristics section on the Electrical Characteristics page. No damage will occur without this capacitor connected, but peak output voltage ripple will be much higher. Lin Vin(+) Lout/2 Vout(+) C1 C2 Regulation Stage Current Sense Isolation Stage Vin(_) Cout Lout/2 Vout(-) Figure D: Internal Input and Output Filter Diagram (component values listed in Electrical Characteristics section). Product # BQ60120HEx30 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2BH612M Rev. F 10/01/15 Page 13 Input: 35-75V Output: 12V Current: 30A Package: Half-brick Ordering Information Part Numbering System Ordering Information The part numbering system for SynQor’s dc-dc converters follows the format shown in the example below. The tables below show the valid model numbers and ordering options for converters in this product family. When ordering SynQor converters, please ensure that you use the complete 15 character part number consisting of the 12 character base part number and the additional characters for options. Add “-G” to the model number for 6/6 RoHS compliance. BQ 6 0 1 2 0 H E A 3 0 N R S - G 6/6 RoHS Options (see Ordering Information) Output Current Model Number Input Voltage BQ60120HEw25xyz-G BQ60120HEw30xyz-G 35-75V 35-75V Output Voltage 12V 12V Max Output Current 25A 30A Thermal Design Performance Level Package Size The following options must be included in place of the w x y z spaces in the model numbers listed above. Output Voltage Input Voltage Product Family Thermal Design A - Open Frame B - Baseplated The first 12 characters comprise the base part number and the last 3 characters indicate available options. The “-G” suffix indicates 6/6 RoHS compliance. Options Description: w x y z Enable Logic Pin Style N - Negative P - Positive K - 0.110" N - 0.145" R - 0.180" Y - 0.250" Feature Set S - Standard Application Notes A variety of application notes and technical white papers can be downloaded in pdf format from our website. RoHS Compliance: The EU led RoHS (Restriction of Hazardous Substances) Directive bans the use of Lead, Cadmium, Hexavalent Chromium, Mercury, Polybrominated Biphenyls (PBB), and Polybrominated Diphenyl Ether (PBDE) in Electrical and Electronic Equipment. This SynQor product is 6/6 RoHS compliant. For more information please refer to SynQor’s RoHS addendum available at our RoHS Compliance / Lead Free Initiative web page or e-mail us at [email protected]. Not all combinations make valid part numbers, please contact SynQor for availability. Contact SynQor for further information and to order: PATENTS Phone: Toll Free: Fax: E-mail: Web: Address: Product # BQ60120HEx30 978-849-0600 888-567-9596 978-849-0602 [email protected] www.synqor.com 155 Swanson Road Boxborough, MA 01719 USA Phone 1-888-567-9596 SynQor holds numerous U.S. patents, one or more of which apply to most of its power converter products. Any that apply to the product(s) listed in this document are identified by markings on the product(s) or on internal components of the product(s) in accordance with U.S. patent laws. SynQor’s patents include the following: 5,999,417 6,222,742 6,545,890 6,594,159 6,731,520 6,894,468 6,896,526 6,927,987 7,050,309 7,072,190 7,085,146 7,119,524 7,269,034 7,272,021 7,272,023 7,558,083 7,564,702 7,765,687 7,787,261 8,023,290 8,149,597 8,493,751 8,644,027 9,143,042 WARRANTY SynQor offers a three (3) year limited warranty. Complete warranty information is listed on our website or is available upon request from SynQor. www.synqor.com Doc.# 005-2BH612M Rev. F 10/01/15 Page 14