BTJ48-15W100D

Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series BTJ series is an isolated DC-DC converter that achieves industry-leading capacity density of 30 W in a small package of 1 x 1 inch. It is a high efficiency (91%), and corresponds wide Input V range (9 to 36V, 18 to 76V). There are -High efficiency -Small size, 1 x 1 inch -Wide input voltage range 4:1 -6 sided shield structure -Adjustable output voltage -Dual power supply usable as single power supply -Isolation voltage DC1500V (1min.) -Over current protection -No electrolytic capacitor, No tantalum capacitor -DIP package -Heat sink not required -Operating temp. Ta = -40°C to +85°C (Temp. derating required) -RoHS compliance Model BTJ Series Input V Vdc Output V Vdc Output I A BTJ24-03S700D 3.3 0 to 7 BTJ24-05S600D 24 BTJ24-12S250D (9 to 36) BTJ24-15S200D BTJ24-12W125D BTJ24-15W100D 5 12 15 ±12 ±15 0 to 6 0 to 2.5 0 to 2 0 to 1.25 0 to 1 BTJ48-03S700D BTJ48-05S600D BTJ48-12S250D 48 (18 to 76) BTJ48-15S200D BTJ48-12W125D BTJ48-15W100D 3.3 5 12 15 ±12 ±15 0 to 7 0 to 6 0 to 2.5 0 to 2 0 to 1.25 0 to 1 Table 1 Line Reg. Load Reg. Noise Efficiency %(max.) %(max.) mVpp(typ.) %(typ.) 0.4 0.4 0.5 1.0 0.4 0.4 0.5 1.0 15 25 15 10 30 20 86 10 25 20 15 30 20 87 90 90 91 87 90 89 89 89 89 91 Note 1 : In the measurement circuit in section 4-4. Note 2 : If not indicated, Input V rating, Output V rating, Output I rating, ambient temp. are measured at 25°C±5°C Note 3 : Ripple noise is measured at BW=20MHz. Note 4 : Temp. derating and forced air cooling required depending on the ambient temp. conditions. Table 2 Input voltage range Rating output voltage Adjustable output voltage range Refer to Table 1 Line regulation Load regulation Refer to Table 1 (rating output, for the regulation of input voltage range of Table 1) Refer to Table 1 (rating input/output voltage, for the regulation of load 0 to 100% (±Output is when load is at balance) Temp. regulation Ripple noise Efficiency Over current protection 0.02%/°C Refer to Table 1 (rating input/output, at room temp., 20MHz bandwidth) 86% to 95% typ. (rating input/output, at room temp., refer to Table 1) Operates at 105% or more rating load current, auto recovery type, avoid over current condition for more than 30 seconds. Over voltage protection Low input voltage protection Over input current protection Remote ON/OFF None Available None 3.3V±2%, 5V±2%, 12V±2%,15V±2％, ±12V±2%, ±15V±2% (Vadj pin at open） Single output products only (refer to 7-2) 2.97 to 3.63V (3.3V products), 4.5 to 5.5V (5V products), 10.8 to 13.2 (12V products), 13.5 to 16.5 (15Vproducts), If the output voltage is raised with the variable output voltage function, reduce the output current to the value specified by the maximum output power. Also, when the output voltage is decreased, the output current is up to the rated value. Between 1pin（ON/OFF）and -2pin（−Vin）: output goes OFF at open, output goes ON when in short (refer to article 7-1) Isolation voltage Input-output: DC1500V 1min, between input/output case, DC1000V 1min Isolation resistance Between output case over 100MΩ at DC500V Primary-secondary capacitance Approx. 1000pF Operating temp. range Operating temp. −40°C to +85°C (need temp. derating from +60°C) Storage temp. range Storage temp. −55°C to +125°C Moisture range Moisture range 95%R.H. max. (non-condensing) Cooling condition Air convention (set in a place where good convection is ensured) Vibration 10 to 55Hz, Scanning time 3mins, All amplitude 1.52mmp-p (1hr each for 3 directions) Shock Acceleration 490.3m/s2 Weight 20g typ. Outline W=25.4 L=25.4 H=9.9(mm) typ. *Unless condition is specified, above specification is regulated as rating value. *Please note that the contents are subject to change without notice due to improvements or other reasons. 1 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series 1. Application range This datasheet applies to the isolated DC/DC converter, BTJ series. 2. Model/Rating Model Rating Input Voltage Rating Output Package BTJ24-03S700D 3.3V, 7A DIP BTJ24-05S600D 5V, 6A DIP 12V, 2.5A DIP BTJ24-15S200D 15V, 2A DIP BTJ24-12W125D ±12V, 1.25A each DIP BTJ24-15W100D ±15V, 1.0A each DIP BTJ48-03S700D 3.3V, 7A DIP BTJ48-05S600D 5V, 6A DIP 12V, 2.5A DIP BTJ48-15S200D 15V, 2A DIP BTJ48-12W125D ±12V, 1.25A each DIP BTJ48-15W100D ±15V, 1.0A each DIP BTJ24-12S250D BTJ48-12S250D DC24V DC48V 3. Environmental Condition 3-1 Temp. range When operating: -40°C to +85°C (Derating required from 60°C, refer to article 5 for more detail) When storage: -55°C to +125°C 3-2 Moisture range When operating: 5 to 95%R.H. (Max. wet-bulb temp. 69°C, non-condensing) When storage: 5 to 95%R.H. (Max. wet-bulb temp. 69°C, non-condensing) *For storage before mounting, please store in a room temperature / humidity environment that avoids direct sunlight with little temperature and humidity changes. 2 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series 4 Specification This product is RoHS compliant. 4-1 Input Condition, Output Characteristics *1 Output Voltage (V) Max. Output Power (W) Output Current (A) BTJ24-03S700D 3.3±2% 23.1 BTJ24-05S600D 5±2% Input Voltage (V) Model Output Voltage Constancy *2 Output Ripple Noise*3 Efficiency (%) typ. Input (mV) max. Load *4 (mV) max. Temp. 0 to 7 13.2 13.2 66 15 / 70 86 30 0 to 6 20 20 100 25 / 70 89 12±2% 30 0 to 2.5 48 48 240 15 / 95 89 BTJ24-15S200D 15±2% 30 0 to 2 60 60 300 10 / 95 89 BTJ24-12W125D ±12±5% 30 0 to 1.25 × 2 60 120 240 30 / 95 89 BTJ24-15W100D ±15±5% 30 0 to 1 × 2 75 150 300 20 / 95 91 BTJ48-03S700D 3.3±2% 23.1 0 to 7 13.2 13.2 66 10 / 70 87 BTJ48-05S600D 5±2% 30 0 to 6 20 20 100 25 / 70 90 12±2% 30 0 to 2.5 48 48 240 20 / 95 90 BTJ48-15S200D 15±2% 30 0 to 2 60 60 300 15 / 95 91 BTJ48-12W125D ±12±5% 30 0 to 1.25 × 2 60 120 240 30 / 95 91 BTJ48-15W100D ±15±5% 30 0 to 1 × 2 75 150 300 20 / 95 92 BTJ24-12S250D 9 to 36 BTJ48-12S250D (mV) typ. (mVp-p) typ. / max. 18 to 76 *1 At measuring circuit of article4-4. Unless condition is specified, input to be rated input and output to be rated output. (dual output products are loaded at balance) Ambient temp. is +25°C±5°C. *2 Input (Input regulation): for regulation of Input voltage min. - max. Load (Load regulation): for regulation of Output current 0 - rated Dual output products have the same output current for two outputs (with balanced load) Temp. (Temp. regulation): for regulation of ambient temp. -40 to 60°C *3 Bandwidth 20MHz, at both ends of external capacitor (C2 or C4 & C5) *4 A dual output product with two outputs having the same current is called a balanced load. The load fluctuation at the time of asymmetric load in the dual output product is as follows. Model Load fluctuation during asymmetric load (mV) max. BTJ24-12W125D 480 BTJ24-15W100D 600 BTJ48-12W125D 480 BTJ48-15W100D 600 *2 One of the outputs is the rated output current, and the output current of the other output is 20% to the fluctuation of the rating. 3 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series 4-2 Capacity of external output capacitor This product has a limit on the capacity of the external output capacitor. The capacity of the external output capacitor should be within the range shown in the table below. Model Capacity BTJxx-03S700D 0 to 10,000μF BTJxx-05S600D 0 to 7,200μF BTJxx-12S250D／BTJxx-12W125D *1 0 to 1,200μF BTJxx-15S200D／BTJxx-15W100D *1 0 to 1,000μF Max. capacity of external output capacitor *1 4-3 Sum of C4 and C5 in the standard connection circuit of 6-2 Temp. derating 4-3.1 Measuring method of temp. derating The mounting direction can be freely selected, but please use it with sufficient consideration for air convection so that heat does not accumulate around this product. Determine the layout of surrounding components and board mounting directions so that air can flow inside the product during forced air cooling or natural air cooling. Please note that output current derating is required when the ambient temperature is high. (refer to the temperature derating curve for the ambient temperature.) The measurement method of temperature derating with respect to the ambient temperature is shown in Fig. 4-1 and Fig. 4-2 below. When mounting on an actual device, check the ambient temperature at the measurement points shown in the figure below and evaluate the actual device. Check the case temperature so that the important parts of this product do not exceed the rated temperature. (1) Measuring method of temp. derating with respect to ambient temp. (in case of natural air cooling) Ambient temp. measurement point 12.7mm Image 4-1 Body of this product Board 76mm Measuring method of temp. derating with respect to ambient temp. (in case of natural air cooling) 4 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series (2) Measuring method of temp. derating with respect to ambient temp. (in case of forced air cooling) 25.4mm Board CL Body of this product Top view 76mm Ambient temp. and wind speed measurement point 12.7mm Wind direction Image 4-2 Wind direction Measuring method of temp. derating with respect to ambient temp. (in case of forced air cooling) (3) Measuring point of case temp. Please make sure that the case temperature is 110ºC or less. Also, when measuring the case temp., make a hole in the center of the label and measure the metal part. CL Case temp. measurement point (in the mid. of case) CL Image 5-3 3-1.1 Measuring point of case temp. Temperature derating curve The temperature derating curve below is measured data when mounted on our evaluation board. Temperature derating is affected by the mounting board, peripheral components and surrounding environment in use. For this reason, make sure that the case temperature (center of the upper surface) during power operation does not exceed 110ºC on the actual machine. Make sure that the ambient temperature does not exceed 85ºC. *Evaluation board specification Size 150mm × 70mm t = 1.6mm Material FR-4 (both sides) Copper foil thickness 35μm 5 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series (1) Temp. derating curve with respect to ambient temp. (reference data Vin:Typ.) BTJ24-05S600D 120 120 100 100 Load factor [%] Load factor [%] BTJ24-03S700D 80 60 40 ：wind speed more than1.0[m/s] ：wind speed 0.5[m/s] ：natural cooling 20 0 -40 -20 0 20 40 60 Ambient temp. [℃] 80 60 40 0 -40 80 100 85 120 120 100 100 60 40 20 -20 0 20 40 60 Ambient temp. [℃] 0 -40 80 100 85 100 Load factor [%] Load factor [%] 100 80 60 40 ：wind speed more than 1.0[m/s] ：wind speed 0.5[m/s] ：natural cooling 0 20 40 60 Ambient temp. [℃] -20 0 20 40 60 Ambient temp. [℃] 80 100 85 BTJ48-05S600D 120 -20 80 100 85 ：wind speed more than 1.5[m/s] ：wind speed 1.0[m/s] ：wind speed 0.5[m/s] ：natural cooling 40 120 0 -40 20 40 60 Ambient temp. [℃] 60 BTJ48-03S700D 20 0 80 20 ：wind speed more than 0.5[m/s] ：natural cooling 0 -40 -20 BTJ24-12W125D Load factor [%] Load factor [%] BTJ24-12S250D, BTJ24-15S200D, BTJ24-15W100D (common) 80 ：wind speed more than 1.0[m/s] ：wind speed 0.5[m/s] ：natural cooling 20 80 100 85 80 60 40 20 0 -40 ：wind speed more than 1.5[m/s] ：wind speed 1.0[m/s] ：wind speed 0.5[m/s] ：natural cooling -20 0 20 40 60 Ambient temp. [℃] 80 100 85 6 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series BTJ48-15S200D, BTJ48-15W100D (common) 120 120 100 100 80 Load factor [%] Load factor [%] BTJ48-12S250D 60 40 ：wind speed more than 1.0[m/s] ：wind speed 0.5[m/s] ：natural cooling 20 0 -40 -20 0 20 40 60 Ambient temp. [℃] 80 60 40 20 80 100 85 0 -40 ：wind speed more than 0.5[m/s] ：natural cooling -20 0 20 40 60 Ambient temp. [℃] 80 100 85 BTJ48-12W125D 120 Load factor [%] 100 80 60 40 20 0 -40 ：wind speed more than 1.5[m/s] ：wind speed 1.0[m/s] ：wind speed 0.5[m/s] ：natural cooling -20 0 20 40 60 Ambient temp. [℃] 80 100 85 (2) Temp. derating curve with respect to case temp. 120 Load factor [%] 100 80 60 40 20 0 -40 -20 0 20 40 60 Ambient temp. [℃] 80 100 120 110 7 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series 4-4 Measurement circuit Fuse +Vin A Vin + 3 4 +Vout A C1 V BTJ-S Series -Vin 2 Rb 5 Vadj C2 V 1 6 C2: 22μF (multi layer ceramic capacitor) Vin + * when used at less than -20℃ 　【BTJxx-03S700D / BTJxx-05S600D】　 　C2: 22μF×2 (multi layer ceramic capacitor) +Vin A When changing the output Voltage, connect Ra or Rb. -Vout 【BTJ24-xxSxxxD】 C1: 120μF 【BTJ48-xxSxxxD】 C1: 47μF Fuse Load Ra SW1 ON/OFF SW1: Open = output OFF Short = output ON 3 4 C3 +Vout C4 V BTJ-W Series -Vin 2 【BTJ24-xxWxxxD】 C3: 120μF 【BTJ48-xxWxxxD】 C3: 47μF Load SW2: Open = output OFF Short = output ON V Load 5 C5 1 V COM SW2 ON/OFF A 6 -Vout A C4, C5: 22μF (multi layer ceramic capacitor) Coaxial cable: 50Ω, 1.5m R1: 50Ω C4: 4700pF C4 R1 Oscilloscope (measurement of ripple noise) NOTE) Please note that output ripple voltage and output spike noise voltage may be affected by PCB wiring. 8 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series 4-5 Additional function Article Over current protection circuit Specification / Standardization Operates above 105%, Hiccup mode, Auto-recovery type None Over voltage protection circuit Low input voltage protection function Output voltage adjustable range (Single output products only) Available rate output voltage ±10% 2.97 to 3.63V （BTJxx-03S700D） 4.5 to 5.5V （BTJxx-05S600D） 10.8 to 13.2V （BTJxx-12S250D） 13.5 to 16.5V （BTJxx-15S200D） -Vin terminal – between ON/OFF terminal Output ON at short (0 to 0.5V) Output OFF at open (4 to 18V) ON/OFF control (Negative logic) Condition By external resistor, refer to 7-2 Refer to 7-1 4-6 Isolation voltage, isolation resistance 1) Isolation voltage Input - Output : DC1.5kV，1min Input - Case : DC1.0kV，1min Output - Case : DC1.0kV，1min 2) Isolation resistance Output - Case more than 100MΩ (at DC500V) Outline and pin 5-1 Shape, Size 4.1 9.9 CL (2.54) 5 2 1 6 20.32 10.16 10.16 5.08 4 3 7.62 CL Material of pin and case Pin Material: Copper Processing:Ni (ground work) Sn (plating) 25.4 6-φ1.0±0.1 25.4 5 : Case Material: Brass Processing:Ni (plating) Dimensions: mm Dimensional tolerance unless otherwise specified ±0.5mm The model name and production lot number are displayed on the top. 9 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series 5-2 Recommended dimension of board mounting The following sizes are recommended for printed circuit board holes and land diameters. Please refer the image below for the location of holes. NOTE) The dimensions are recommended values. When designing, consider your design standards. Top view Pin shape φ 1.0mm Hole diameter φ 1.5mm Land diameter φ 2.8mm Recommended board mounting 1 6 7.62 10.16 2 5.08 5 3 10.16 hole diameter and land diameter 4 20.32 Outline Units : mm Hole position dimensions 5-3 Pin function 【BTJ-S series (single output)】 Pin Name 1 ON/OFF 2 Function 【BTJ-W series (dual output)】 Pin Name Function Remote ON/OFF control pin 1 ON/OFF -Vin -Input pin 2 -Vin -Input pin 3 +Vin +Input pin 3 +Vin +Input pin 4 +Vout +Output pin 4 +Vout +Output pin 5 Vadj Output voltage variable pin 5 COM COMMON pin 6 -Vout -Output pin 6 -Vout -Output pin 5-4 Lot No. Remote ON/OFF control pin D : Scheduled production year (last digit of the year) E : Scheduled production week (fiscal week number 8 0 3N0 1 from April 1) D E F F : Production management code (ie: manufactured on Apr. 10, 2017） * The production year is an American-style fiscal year. The period starts from Apr. 1 to Mar. 31; the year will be called based on the closing date ie) Apr. 1, 2016 to Mar. 31, 2017 - year 2017 Apr. 1, 2018 to Mar. 31, 2019 - year 2019 10 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series 6 Standard connection circuit 6-1 BTJ-S series Fuse +Vin +Vin 3 4 +Vout Rb C1 -Vin 2 C2 BTJ-S Series 5 Vadj Load Ra SW1 ON/OFF 1 6 When changing the output voltage, connect Ra or Rb. SW1 【BTJ24-xxSxxxD】 C1: more than 120μF Open = Output OFF Short = Output ON 【BTJ48-xxSxxxD】 C1: more than 47μF 6-2 -Vout *When used at less than -20℃ 　【BTJxx-03S700D / BTJxx-05S600D】　 　 C2: 22μF×2 (multi layer ceramic capacitor) BTJ-W series Fuse +Vin +Vin 3 4 +Vout C3 -Vin SW1 ON/OFF 2 BTJ-W Series 5 1 6 C4 Load C5 Load COM -Vout SW1 【BTJ24-xxSxxxD】 C1: more than 120μF Open = Output OFF Short = Output ON 【BTJ48-xxSxxxD】 C1: more than 47μF *Since large current flows through the input / output pattern, consider the line drop and temperature rise when designing the current and pattern width. * The BTJ series does not have a built-in fuse. Use external fuses to obtain various safety standards and improve safety. Select a fast-acting fuse and add it to each unit. Install the fuse on the + Vin side if the -Vin side is grounded, and on the -Vin side if the + Vin side is grounded. When selecting an input fuse, consider the margin for the maximum input voltage actually used. Also, an inrush current will flow when the input is turned on, so check the I2t tolerance of the fuse. Recommended current ratings for input fuses are as follows: BTJ24-xxSxxxD / BTJ24-xxWxxxD BTJ48-xxSxxxD / BTJ48-xxWxxxD : less than 10A : less than 6.3A 11 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series *To prevent the input line inductance component from affecting the power supply, add an electrolytic capacitor between the + Vin and -Vin terminals. Use a low impedance electrolytic capacitor with excellent temperature characteristics. (Nippon Chemi-Con made, equivalent to KZE series) * The BTJ series can operate without an external output capacitor. Connection is required to satisfy the specified ripple noise. (C2, C4, C5=22uF) When a steep pulse load is connected to this product or the pattern up to the load is long, the output voltage may become unstable. In such a case, the output voltage can be stabilized by adding a capacitor. * In BTJxx-03S700D and BTJxx-05S600D, the output voltage may become unstable if the input voltage drops momentarily (stops) with a capacitor added to the output side. If an instantaneous drop in the input voltage is expected, the output voltage can be stabilized by connecting an input voltage holding diode and increasing the capacitance value of C1, as shown in the figure below. Use an input voltage holding diode that exceeds the rated current of the fuse. Also, the capacitance value of C1 varies depending on load factor, capacitance of the capacitor added to the output, and expected instantaneous drop (stop) time, therefore please select after confirming the characteristics with the actual machine. Input voltage holding diode Fuse Vin +Vin 3 2 5 1 6 ON/OFF 7 +Vout BTJxx-03S700D / BTJxx-05S600D Cin -Vin 4 Vadj Load Cout -Vout Various functions 7-1 Remote ON/OFF control (ON/OFF pin) By using the ON / OFF pin, the output voltage can be controlled on / off with the input turned on. The control logic of this product is the negative logic control method (Negative Logic). To use the ON / OFF function, connect a transistor, relay, etc. between the ON / OFF terminal and -Vin terminal as shown in the figure below. When controlling from the secondary side (output side), insulate with a photocoupler and use the ON / OFF function. -between Vin pin (2Pin) and ON/OFF pin (1Pin) short ((0≦VON/OFF≦0.5V) open ( (4V≦VON/OFF≦18V) : output OFF Fuse +Vin +Vin 3 Cin -Vin or TR : output ON 2 BTJ Series SW ON/OFF 1 Connection example of ON/OFF pin 12 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series Note 1) When not using ON / OFF function, short-circuit between the ON / OFF terminal and the -Vin terminal. Note 2) The source current from ON / OFF pin to -Vin pin is 1mA or less. Note 3) The maximum applied voltage to the ON / OFF pin is 18V. Note 4) If the wiring from the ON / OFF pin to the -Vin pin is long, or if there is an effect of noise, connect a capacitor between the ON / OFF pin and the -Vin pin. The maximum capacitance value of the capacitor that can be connected between ON / OFF pin and -Vin is 1μF. Variable output voltage (BTJ-S (single output products) only) By connecting a resistor between Vadj pin and + Vout pin or between Vadj pin and -Vout pin, the output voltage can be varied. If the output voltage is not variable, leave the Vadj pin open. Output variable range: ±10% of rated output voltage 7-1.1 Variable by external resistor and variable resistor (1) When setting the output voltage low When setting the output voltage to a low value, use it within the maximum output current of the specification standard value. ie) BTJxx-05S600D The maximum output power when the 5V rating is set to 4.5V is 4.5V×6.0A=27W. The output voltage can be lowered by connecting a resistor Rb between the variable output voltage pin (Vadj) and the positive output pin (+ Vout). The calculation formula at that time is as follows. (the unit of Rb is [kΩ]) Since the Vadj terminal has a relatively high impedance, connect it as short as possible so as not to be affected by noise. 4 +Vout Rb BTJ-S Series 5 6 Vadj Load -Vout Basic connection for low output voltage setting Output voltage: Vout[V], Connection resistance: Rb[kΩ] BTJxx-03S700D 16.05 22.8 + Rb(kΩ) 16.05 Rb(kΩ) = − 22.8 3.3 − Vout(V) However, the variable range is up to 2.97V. Vout(V) = 3.3 − 13 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series BTJxx-05S600D 53.95 32.3 + Rb(kΩ) 53.95 Rb(kΩ) = − 32.3 5.01 − Vout(V) However, the variable range is up to 4.5V. Vout(V) = 5.01 − BTJxx-12S250D 445.7 63.1 + Rb(kΩ) 445.7 Rb(kΩ) = − 63.1 12.05 − Vout(V) However, the variable range is up to 10.8V. Vout(V) = 12.05 − BTJxx-15S200D 732.7 74.7 + Rb(kΩ) 732.7 Rb(kΩ) = − 74.7 15.08 − Vout(V) However, the variable range is up to 13.5V. Vout(V) = 15.08 − (2) When setting the output voltage high When setting the output voltage to a higher value, use it within the maximum output power specified in the specification. Note that increasing the output voltage beyond the variable range may damage the power supply. ie) BTJxx-05S600D The maximum output current when the 5V rating is set to 5.5V is 30W÷5.5V=5.45A. The output voltage can be lowered by connecting a resistor Ra between the variable output voltage pin (Vadj) and the negative output pin (-Vout). The calculation formula at that time is as follows (the unit of Ra is [kΩ]). Since the Vadj pin has a relatively high impedance, connect it as short as possible so as not to be affected by noise. 4 BTJ-S Series 5 +Vout Vadj Load Ra 6 -Vout Basic connection for high output voltage setting 14 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series Output voltage: Vout[V], Connection resistance: Ra[kΩ] BTJxx-03S700D 9.67 15 + Ra(kΩ) 9.67 Ra(kΩ) = − 15 Vout(V) − 3.3 However, the variable range is up to 3.63V. Vout(V) = 3.3 + BTJxx-05S600D 17.73 18 + Ra(kΩ) 17.73 Ra(kΩ) = − 18 Vout(V) − 5.01 However, the variable range is up to 5.5V. Vout(V) = 5.01 + BTJxx-12S250D 50.96 22 + Ra(kΩ) 50.96 Ra(kΩ) = − 22 Vout(V) − 12.05 However, the variable range is up to 13.2V. Vout(V) = 12.05 + BTJxx-15S200D 65.35 22 + Ra(kΩ) 65.35 Ra(kΩ) = − 22 Vout(V) − 15.08 However, the variable range is up to 16.5V. Vout(V) = 15.08 + 7-2 Overcurrent protection (OCP) Built-in OCP function. If the short-circuit condition or output current exceeds the OCP set value, intermittent operation will occur. The output is automatically restored by releasing the short-circuit state or setting the output current below the OCP set value. If the overcurrent condition continues, the power supply may be damaged depending on the heat dissipation conditions. Please be careful. 15 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series 8 How to protect reverse connection of input power (example) If the polarity of the input is incorrect, the power supply may be damaged. If there is a possibility of reverse connection, connect a protective diode (D1) and fuse (F1). Make sure that the withstand voltage of the protective diode is higher than the input voltage, and be sure to use a surge current that is larger than the fuse. F1 +Vin +Vin D1 3 4 +Vout Cin -Vin 2 1 ON/OFF BTJ-S Series 5 6 Vadj Load -Vout Reverse connection prevention circuit 9 Redundant operation method (example) Redundant operation can be used for loads that can be supplied by a single unit. When one unit shuts down due to power failure, etc., it is possible to continue supplying power with the other unit that is still operating. 4 +Vout BTJ-S Series 4 Load 6 4 BTJ-W Series +Vout BTJ-S Series 4 BTJ-W Series 6 -Vout Redundant operation connection method (BTJ-S) Load 5 6 -Vout +Vout 5 6 COM Load -Vout +Vout COM -Vout Redundant operation connection method (BTJ-W) 10 Parallel operation Parallel operation is not possible. 16 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series 11 Series operation method (example) Series operation is possible by wiring this product as shown below. Make sure that the output current is below the rated current of the power supply connected in series, whichever is smaller, so that current exceeding the rating does not flow inside the power supply. Fuse +Vin 3 4 BTJ-S Series +Vin -Vin Fuse +Vin 2 4 4 +Vout BTJ-S Series -Vin -Vout 3 +Vin D1 6 3 Fuse +Vin +Vout + Load - 2 6 Load -Vout Common Fuse +Vin +Vout 3 4 +Vout + BTJ-S Series -Vin 2 D2 6 Load BTJ-S Series -Vin -Vout Output voltage stacked when series operation 2 - 6 -Vout Series operation when used ± output The BTJ-W Series (dual output product) can be used as a 24V or 30V single output by connecting +Vout and -Vout. 4 BTJ-W Series 5 6 +Vout COM Load -Vout Connection when using BTJ-W Series (dual output product) with single output 12 Between input and output capacitor capacity A capacitor is built in between the input and output of this product. Between input and output capacitor capacity: 1000pF The higher the AC voltage between the input and output and the higher the frequency, the greater the loss of the built-in capacitor, which may damage the power supply. Please contact us when using in applications where the voltage between input and output changes abruptly, or when connecting a high-frequency pulsed load on the output side. 13 Mounting (recommended soldering condition) Please perform soldering within the following conditions. (1) Soldering Dip Dip condition: 260ºC, 10 sec. Preheat condition: 110ºC, less than 30 to 40 sec. 17 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series (2) Soldering iron 350ºC, within 3 sec. Note) The soldering time varies depending on the soldering iron capacity and board pattern to be used. Please check with the actual machine. 14 Vibration / Shock test Vibration: 10 to 55Hz, Sweep time 3 mins, All Amplitude 1.52mmp-p (1 hr. each for 3 directions) Shock test: Acceleration 490.3m/s2 15 Cleaning condition This product cannot be washed whole. Clean the solder surface with a brush with isopropyl alcohol (IPA) so that the cleaning solution does not penetrate inside the power supply. In addition, please use after the cleaning liquid is sufficiently dried. 16 Precautions When using this product, please refer to the specifications to ensure your safety and be sure to observe the following precautions. - This product intends to be used for general electronic equipment (Clerical work machines, Telecommunications equipment, and Measurement equipment). Therefore, do not use for medical equipment, nuclear power equipment, and trains, etc. the malfunction and damage of which may influence directly to human life and property. Please confirm when using it in the case except general electronic equipment. - This product may be subject to minor changes or component changes within a range that does not significantly affect the specifications without prior notice due to improved characteristics and other reasons. - For this product, parallel operation is not possible. - For mounting this product, please do not use connector or socket. The performance may not be fulfilled by the effect of contacting resistor. Please mount to PCB by soldering. - Although this product has a built-in overcurrent protection circuit, avoid overcurrent and short-circuit conditions for a long time (30 seconds or more) as they can cause failure. - The product may be damaged if it is used under nonstandard electric and environmental conditions such as temperature. Please be sure to keep the standards. - Do not store in a place where corrodible gas may be generated or at a dusty place. - There is a possibility of damage by static. When the worker has electrified static, please earth discharge and working on an earthed worktable will be recommended. 18 Bellnix DC-DC Converter BDD20190904_Z01 Ultra Small Size, Isolated DC-DC Converter 30 Watt BTJ Series - This product does not have a built-in fuse. Connect a fuse to the + input line as a protection when an excessive current flow to the input during abnormal conditions. Make sure that the power supply has enough capacity to cut the fuse. - If the input ripple voltage exceeds 2Vp-p, the output ripple voltage may increase. Also note that output voltage may fluctuate transiently due to steep changes in input voltage. Use a stabilized input voltage as the input source. - This product does not have a built in over voltage protection. - No test certificate is attached to this product. 17 Guarantee This product shall be guaranteed for 1 year. During this period, if there should be any failure definitely due to our designing or manufacturing workmanship, we will repair or replace it with new one at our own expense. But in case that it should be modified and/or made internal remodeling by buyer itself whatsoever, we cannot guarantee it. The warranty range of this product is the range of the product concerned. 18 Others If any doubt arises in this specification, it will be decided after consultation between the two parties. 19 Bellnix DC-DC Converter BDD20190904_Z01