Positive to Negative Converters Features Innoline Switching Regulators ● ● ● ● Innoline Switching Regulators can also be used to convert a positive voltage into a negative voltage The standard parts can be used - only two extra capacitors are required Fixed and variable output voltages are available. Input voltage range can be lower than the output voltage for higher output voltages Positive-to-Negative Switching Regulators Selection Guide Series R-78xx-0.5 R-78Axx-0.5SMD R-78xx-1.0 R-78Axx-1.0SMD R-78Bxx-1.0 R-78Bxx-1.5 R-78HBxx-0.5 R-5xxxP/DA R-61xxP/D R-62xxP/D R-7xxxP/D Circuit Ideas Maximum Output Current -0.4A -0.2A -0.4A -0.2A Input Voltages (VDC) min. max. 4.75 – 28, 5.0 – 26, 8.0 – 18 4.75 – 28, 5.0 – 26, 8.0 – 18 Output Voltages (VDC) No. of Outputs Case Adjustable Page Vout? -1.5, -1.8, -2.5, -3.3, -5.0, -6.5, -9.0, -12, -15 -1.5, -1.8, -2.5, -3.3, -5.0, -6.5, -9.0, -12, -15 S SIP3 No 2 S SMD Yes 3 No 5 No 6 Not recommended to be used in this mode due to the reduced input and output voltage range Not recommended to be used in this mode due to the reduced input and output voltage range -0.6A 4.75 – 28, -1.5, -1.8, -2.5, -3.3, -5.0, S SIP3 -0.4A 8.0 – 28, 8.0 – 26 -6.5, -9.0, -0.3A 8.0 – 18 -12, -15 Not recommended to be used in this mode due to the reduced input and output voltage range -0.4A/-0.35A 15 – 65, -3.3, -5.0,-6.5 S SIP3 -0.3A/-0.25/-0.2A 15 – 62, 15 – 59, 15 – 56, -9.0, -12, -15 -0.2A 20 – 48 -24 Not recommended to be used in this mode due to the reduced input and output voltage range Not recommended to be used in this mode as R-78B series offer a lower cost alternative -1A 9 – 28 -1.8, -2.5, -3.3, -5, S SIP12 Yes -0.8A/-0.6A 9 – 26 -9, -12 Not recommended to be used in this mode due to the reduced efficiency and higher Ripple & Noise figures. www.recom-international.com 7 9 January-2007 1 INNOLINE Positive to Negative Converter DC/DC-Converter 0V 0V +Vin 1 R-78xx-0.5 R-78xx-0.5 Series Positive to Negative Converter 3 C1 and C2 are required and should be fitted close to the converter pins. 2 C1 C2 -Vout Pin Connections Pin # Negative Output 1 +Vin 2 -Vout 3 GND Positive Output +Vin GND +Vout RECOM R-785.0-0.5 **** Pb 1 2 3 Selection Guide Part Number SIP3 Input Range (V) Output Voltage (V) Output Current (A) Min. Vin (%) Efficiency Max. Vin (%) External Capacitors C1 C2 R-781.5-0.5 4.75 – 28 -1.5 -0.4 68 67 10µF/35V 22µF/6.3V R-781.8-0.5 4.75 – 28 -1.8 -0.4 71 70 10µF/50V 22µF/6.3V R-782.5-0.5 4.75 – 28 -2.5 -0.4 75 76 10µF/50V 22µF/6.3V R-783.3-0.5 4.75 – 28 -3.3 -0.4 77 80 10µF/50V 22µF/6.3V R-785.0-0.5 6.5 – 28 -5.0 -0.4 79 84 10µF/50V 22µF/10V R-786.5-0.5 5.0 – 26 -6.5 -0.3 81 86 10µF/50V 10µF/10V R-789.0-0.5 8.0 – 18 -9.0 -0.2 87 89 10µF/50V 10µF/16V R-7812-0.5 8.0 – 18 -12 -0.2 87 90 10µF/50V 10µF/25V R-7815-0.5 8.0 – 18 -15 -0.2 87 91 10µF/50V 10µF/25V Application Example (see also Circuit Ideas) Derating-Graph +Vin 1 R-78xx-0.5 3 +Vout (Ambient Temperature) 2 0V 0V 1 R-78xx-0.5 3 2 C1 C2 Output Power (%) 120 100 80 60 40 20 0 Safe Operating Area -40 0 25 50 Operating Temperature (°C) 85 75 100 71 -Vout 2 January-2007 www.recom-international.com INNOLINE Positive to Negative Converter 0V DC/DC-Converter 0V +Vin 1,2 On/Off (Referenced to -Vout) C1 R-78Axx-0.5SMD 10 Pin Connections Pin # Negative Output 1,2 +Vin 3,7,8,9 -Vout 4,5 GND 6 -Vout Adj. 10 On/Off 4,5 R1 6 3,7 8,9 R-78Axx0.5 SMD Positive to Negative Converter C1 and C2 are required and should be fitted close to the converter pins. C2 R2 -Vout 10 9 8 7 6 Positive Output +Vin GND +Vout +Vout Adj. On/Off RECOM R-78Axx-0.5SMD xxxx 1 2 3 4 5 Selection Guide Part Number SIP3 Input Range (V) Output Voltage (V) Output Current (A) Min. Vin (%) Efficiency Max. Vin (%) External Capacitors C1 C2 R-78A1.5-0.5SMD 4.75 – 28 -1.5 -0.4 68 67 10µF/35V 22µF/6.3V R-78A1.8-0.5SMD 4.75 – 28 -1.8 -0.4 71 70 10µF/50V 22µF/6.3V R-78A2.5-0.5SMD 4.75 – 28 -2.5 -0.4 75 76 10µF/50V 22µF/6.3V R-78A3.3-0.5SMD 4.75 – 28 -3.3 -0.4 77 80 10µF/50V 22µF/6.3V R-78A5.0-0.5SMD 4.75 – 28 -5.0 -0.4 79 84 10µF/50V 22µF/10V R-78A6.5-0.5SMD 5.0 – 26 -6.5 -0.3 81 86 10µF/50V 10µF/10V R-78A9.0-0.5SMD 8.0 – 18 -9.0 -0.2 87 89 10µF/50V 10µF/16V R-78A12-0.5SMD 8.0 – 18 -12 -0.2 87 90 10µF/50V 10µF/25V R-78A15-0.5SMD 8.0 – 18 -15 -0.2 87 91 10µF/50V 10µF/25V Application Example (see also Circuit Ideas) 1,2 On/Off R-78Axx-0.5SMD 10 3,7 8,9 +Vout 4,5 Optocoupler Optocoupler www.recom-international.com R-78Axx-0.5SMD 10 3,7 8,9 120 100 R2 0V C1 (Ambient Temperature) R1 6 0V 1,2 Derating-Graph 6 4,5 R1 C2 R2 January-2007 Output Power (%) +Vin 80 60 40 20 0 Safe Operating Area -40 0 25 50 Operating Temperature (°C) 85 75 100 71 -Vout 3 R-78Axx-0.5 SMD Positive to Negative INNOLINE DC/DC-Converter Table 1: Adjustment Resistor Values Vout (nom.) R-78A1.8 -0.5SMD R-78A2.5 -0.5SMD R-78A3.3 -0.5SMD R-78A5.0 -0.5SMD R-78A6.5 -0.5SMD R-78A9.0 -0.5SMD R-78A12 -0.5SMD 1.8Vdc 2.5Vdc 3.3Vdc 5.0Vdc 6.5Vdc 9.0Vdc 12.0Vdc Vout (adj) R1 -1.5 (V) 3KΩ R2 R1 R2 R1 R2 R1 21KΩ 5.6KΩ 88.4KΩ 17KΩ R2 R1 R2 R1 R2 R1 R2 200Ω -1.8 (V) 12KΩ -2.5 (V) 12KΩ -3.0 (V) 4.7KΩ 50KΩ -3.3 (V) 2.7KΩ 29KΩ 27KΩ 6.7KΩ -3.6 (V) 19.4KΩ 69KΩ 42KΩ 14KΩ -3.9 (V) 14kΩ 30.5KΩ 58KΩ 23KΩ -4.5 (V) 8kΩ 12.1kΩ 180KΩ 49KΩ 26KΩ 17KΩ 7.6kΩ 850KΩ 77kΩ 36KΩ 24KΩ -4.9 (V) -5.0 (V) 6.8kΩ 86kΩ 39KΩ 26KΩ -5.1 (V) 6.2kΩ 540kΩ 97KΩ 42KΩ 28KΩ -5.5 (V) 4kΩ 71kΩ 160KΩ 56KΩ 36KΩ 112KΩ 63KΩ 400KΩ 125KΩ -6.5 (V) 20.2kΩ -8.0 (V) 7.2kΩ 26KΩ -9.0 (V) 11.3KΩ -10 (V) 5.2KΩ -11 (V) 1.8KΩ 200KΩ 59KΩ 345KΩ 18.5KΩ 740KΩ -12 (V) 5.2KΩ -12.6 (V) 830KΩ 216KΩ -13.0 (V) 82KΩ -14.0 (V) 30KΩ -15.0 (V) 13KΩ Typical Application 1,2 + R-78A12-0.5SMD 10 Vin=15VDC 3,7 8,9 +Vout 4,5 26k 6 +5V 100k +7.5V 200k +9V +12V - 0V 1,2 10µF R-78A12-0.5SMD 10 3,7 8,9 4,5 6 22µF 26k -5V 100k -7.5V 200k -9V -12V Dual Rail Selectable Output Voltage Power Supply 4 January-2007 -Vout www.recom-international.com INNOLINE Positive to Negative Converter DC/DC-Converter 0V 0V +Vin 1 R-78Bxx1.0 Series Positive to Negative Converter 3 R-78Bxx-1.0 C1 and C2 are required and should be fitted close to the converter pins. 2 C1 C2 -Vout Pin Connections Pin # Negative Output 1 +Vin 2 -Vout 3 GND Positive Output +Vin GND +Vout RECOM R-78B5.0-1.0 **** Pb 1 2 3 Selection Guide Part Number SIP3 Input Range (V) Output Voltage (V) Output Current (A) Min. Vin (%) Efficiency Max. Vin (%) External Capacitors C1 C2 R-78B1.5-1.0 4.75 – 28 -1.5 -0.6 70 68 10µF/50V 22µF/6.3V R-78B1.8-1.0 4.75 – 28 -1.8 -0.6 72 72 10µF/50V 22µF/6.3V R-78B2.5-1.0 4.75 – 28 -2.5 -0.6 75 77 10µF/50V 22µF/6.3V R-78B3.3-1.0 4.75 – 28 -3.3 -0.6 77 80 10µF/50V 22µF/6.3V R-78B5.0-1.0 8.0 – 28 -5.0 -0.6 83 85 10µF/50V 22µF/10V R-78B6.5-1.0 8.0 – 26 -6.5 -0.4 84 87 10µF/50V 10µF/10V R-78B9.0-1.0 8.0 – 18 -9.0 -0.4 88 89 10µF/50V 10µF/16V R-78B12-1.0 8.0 – 18 -12 -0.3 89 90 10µF/50V 10µF/25V R-78B15-1.0 8.0 – 18 -15 -0.3 89 91 10µF/50V 10µF/25V Application Example (see also Circuit Ideas) Derating-Graph +Vin 1 R-78Bxx-1.0 3 +Vout (Ambient Temperature) 2 0V 0V 1 R-78Bxx-1.0 3 2 C1 C2 Output Power (%) 120 100 80 60 40 20 0 Safe Operating Area -40 0 25 50 Operating Temperature (°C) 85 75 100 71 -Vout www.recom-international.com January-2007 5 INNOLINE Positive to Negative Converter DC/DC-Converter 0V 0V +Vin 1 R-78HBxx0.5 Series Positive to Negative Converter 3 R-78HBxx-0.5 C1 and C2 are required and should be fitted close to the converter pins. 2 C1 C2 -Vout Pin Connections Pin # Negative Output 1 +Vin 2 -Vout 3 GND Positive Output +Vin GND +Vout RECOM R-78HB5.0-0.5 **** Pb 1 2 3 Selection Guide Part Number SIP3 Input Range (V) Output Voltage (V) Output Current (A) Min. Vin (%) Efficiency Max. Vin (%) External Capacitors C1 C2 R-78HB3.3-0.5 15 – 65 -3.3 -0.4 78 75 1µF/100V 22µF/6.3V R-78HB5.0-0.5 15 – 65 -5.0 -0.4 82 80 1µF/100V 22µF/10V R-78HB6.5-0.5 15 – 65 -6.5 -0.35 84 82 1µF/100V 22µF/10V R-78HB9.0-0.5 15 – 62 -9.0 -0.3 87 85 1µF/100V 10µF/16V R-78HB12-0.5 15 – 59 -12 -0.25 88 86 1µF/100V 10µF/25V R-78HB15-0.5 15 – 56 -15 -0.2 89 87 1µF/100V 10µF/25V R-78HB24-0.3 15 – 48 -24 -0.2 89 87 1µF/100V 10µF/35V Application Example (see also Circuit Ideas) Derating-Graph +Vin 1 3 +Vout R-78HBxx-0.5 (Ambient Temperature) 2 0V 0V 1 3 R-78HBxx-0.5 2 C1 C2 Output Power (%) 120 100 80 60 40 20 0 Safe Operating Area -40 0 25 50 Operating Temperature (°C) 85 75 100 71 -Vout 6 January-2007 www.recom-international.com INNOLINE Positive to Negative Converter DC/DC-Converter 0V 0V +Vin C1 and C2 are required and should be fitted close to the converter pins. 2,3,4 On/Off (Referenced to -Vout) C1 1 Pin Connections Pin # Negative Output 2,3,4 +Vin 5,6,7,8 -Vout 9,10,11 GND 12 -Vout Adj. 1 On/Off R-62xxP/D 5,6 7,8 12 9,10, 11 R1 C2 R2 Positive Output +Vin GND +Vout +Vout Adj. On/Off R-62xxP/D SIP12 Positive to Negative Converter -Vout RECOM R-6212P 1 2 3 4 5 6 7 8 9 10 11 12 Selection Guide Part Number SIP3 Input Range (V) Output Voltage (V) Output Current (A) Min. Vin (%) Efficiency Max. Vin (%) External Capacitors C1 C2 R-621.8P/D 9 – 28 -1.8 (-1.5~-3.6) -1.0 72 65 10µF/50V 100µF/6.3V R-622.5P/D 9 – 28 -2.5 (-1.5~-4.5) -1.0 76 72 10µF/50V 100µF/6.3V R-623.3P/D 9 – 28 -3.3 (-1.8~-6V) -1.0 79 76 10µF/50V 100µF/10V R-625.0P/D 9 – 28 -5.0 (-1.8~-9V) -1.0 81 80 10µF/50V 100µF/10V R-629.0P/D 9 – 26 -9.0 (-3.3~-15V) -0.8 84 85 10µF/50V 100µF/25V R-6212P/D 9 – 26 -12 (-3.3~-15V) -0.6 86 88 10µF/50V 100µF/25V Max output current calculation: Internal power dissipation (1W) = Io x Vo x (1-Efficiency) Io = 1(W) / Vo x (1-Efficiency) Example : R-625.0P at Vin = +9VDC, Vout=-5.0V Efficiency = 80% (see ”Selection Guide” table) Io = 1W / 5V x (1-0.8) = -1000mA at Vin = +9VDC, Vout=-8.0V (with trim) Efficiency = 80% (see ”Selection Guide” table) Io = 1W / 8V x (1-0.8) = -625mA Ambient Temperature (°C) Derating 90 85 80 60 40 20 0 0.5 0.7 1 1.5 Internal Power Dissipation (W) www.recom-international.com January-2007 7 R-62xxP_D Positive to Negative INNOLINE DC/DC-Converter Remote On/Off Control Application Example +Vin 2,3,4 On/Off 1 R-6xxxP R1 12 5,6 7,8 +Vout 9,10,11 100µF R2 0V 0V Optocoupler 2,3,4 C1 1 R-62xxP 9,10, 11 R1 12 5,6 7,8 C2 R2 Optocoupler -Vout Table 1: Adjustment Resistor Values Vout (nom.) R-621.8P/D R-622.5P/D R-623.3P/D 1.8VDC 2.5VDC 3.3VDC Vout (adj) R1 1.5 13.6KΩ R2 R2 R1 R2 R-629.0P/D 5VDC R1 R-6212P/D 9VDC R2 R1 12VDC R2 R1 R2 3.3KΩ 1.8 8 R1 R-625.0P/D 8.2KΩ 3.1KΩ 820Ω 15KΩ 5.1KΩ 1.5KΩ 13KΩ 3.6KΩ 51KΩ 7.0KΩ 2.0 10KΩ 2.5 5.1KΩ 3.0 2.5KΩ 10KΩ 3.3 1.7KΩ 5.9KΩ 3.6 1.2KΩ 3.9KΩ 3.9 4.5 9.7KΩ 0Ω 0Ω 18KΩ 14KΩ 1.5kΩ 560Ω 2.8KΩ 9.1KΩ 20KΩ 3.3kΩ 1.2kΩ 1.6KΩ 3.9KΩ 60KΩ 7.5kΩ 2.1kΩ 11kΩ 4.0kΩ 5.0 2.4KΩ 5.1 2.2KΩ 60KΩ 12kΩ 4.3kΩ 5.5 1.6KΩ 15KΩ 17kΩ 5.6kΩ 6.0 1.1KΩ 7.2KΩ 24kΩ 7.5kΩ 7.0 2.8KΩ 51kΩ 12kΩ 8.0 1.5KΩ 130kΩ 19kΩ 9.0 880Ω 31kΩ 10 36kΩ 55kΩ 11 15kΩ 125kΩ 12 8.2kΩ 13 4.7kΩ 11kΩ 14 2.7kΩ 4.0kΩ 15 1.3kΩ 1.6kΩ January 2007 www.recom-international.com Positive to Negative Circuit Ideas INNOLINE DC/DC-Converter Application Examples Negative Voltage Doubler 0V 0V -24V 1 3 R-78HB24-0.3 2 1µF/ 100V 10µF/ 35V -48V 12V Battery Stabilisor Vbatt = 8~18V -Ve 12V 1 +Ve 3 R-7812-0.5 2 10µF/ 25V 10µF/ 25V 0V 12V Battery Voltage Stabilisor Negative Rail Generator for Asymmetric Loads L N 0.1µF RAC1005SB C1 1 R-7805-0.5 47µF/ 10V C2 +5V @ 1500mA 0V 3 2 10µF/ 10V C3 C1 RAC10 AC/DC Converter C2 C3 R-78 27.2mm C4 C4 10µF/ 10V -5V @ -400mA Ultra-compact low noise regulated and protected AC/DC dual output supply. 60mm www.recom-international.com January-2007 9