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APPLICATION MANUAL

DC/DC CONVERTER

CONTROLLER

RV5VH SERIES

NO. EA-049-9803

ELECTRONIC DEVICES DIVISION

Summary of Contents for RV5VH

Page 1: ...APPLICATION MANUAL DC DC CONVERTER CONTROLLER RV5VH SERIES NO EA 049 9803 ELECTRONIC DEVICES DIVISION...

Page 2: ...nt computer equipment measuring instruments consumer electronic products amusement equipment etc Those customers intending to use a product in an application requiring extreme quality and reliability...

Page 3: ...STICS 26 DC DC Converter 1 1 Output Voltage vs Output Current RV5VH1 26 2 Output Voltage vs Output Current RV5VH2 26 3 Efficiency vs Output Current RV5VH1 27 4 Efficiency vs Output Current RV5VH2 27 5...

Page 4: ...VOUT1 Output Voltage 32 21 VSEN Output Current vs VSEN Output Voltage 32 22 Output Delay Time vs Load Capacitance 32 RV5VH3 BLOCK DIAGRAMS 33 PIN CONFIGURATION 33 PIN DESCRIPTION 34 ABSOLUTE MAXIMUM R...

Page 5: ...DC DC converter systems both of boost converter DC DC1 and inverting one DC DC2 can operate with external transistors being adjustable out put by resistors Further more reset output is available FEAT...

Page 6: ...XT2 GND Vref Error Amp 1 Error Amp 2 1 2 3 4 8 7 6 5 VFM2 VLX lim VFM1 OSC p_shift DC DC CONVERTER CONTROLLER BOOST INVERTING RV5VH1 RV5VH2 CSW VSEN VOUT1 EXT1 DOUT FB EXT2 GND Vref Error Amp 1 Error...

Page 7: ...Ground 6 EXT2 External Transistor drive pin for DC DC2 CMOS output 7 FB Input for DC DC2 Error Amplifier 8 DOUT Output for Voltage detector RV5VH2 Pin No Symbol Description 1 CSW Contol switch for DC...

Page 8: ...UT DOUT Pin Voltage 12 V VCSW CSW Pin Voltage 0 3 to VOUT1 0 3 V VEXT2 EXT2 Pin Voltage 0 3 to VOUT1 0 3 V VFB FB Pin Voltage 0 3 to VOUT1 0 3 V ILX1 LX1 Output Current 400 mA IEXT2 EXT2 Output Curren...

Page 9: ...device These are stress ratings only and do not necessarily imply functional operation below these limits RV5VH2 Symbol Item Ratings Unit VOUT1 VOUT1 Pin Voltage 12 V VSEN VSEN Pin Voltage 12 V DOUT D...

Page 10: ...e 2 925 3 000 3 075 V VINmax Maximum Input Voltage 10 V Vstart Oscillator Start up Voltage No Load 0 7 0 8 V Vhold Hold on Input Voltage IOUT 1mA VIN 2 0V 0 7 V ISS1 Supply Current1 1 No Load CSW L 10...

Page 11: ...ent VEXT2 VOUT1 0 4V 2 4 mA IEXT2L EXT2 L Output Current VEXT2 0 4V 4 8 mA fosc Maximum Oscillator Frequency 110 130 150 kHz Maxdty Oscillator Duty Cycle VEXT2 H 40 50 60 VCSWH CSW H Input Voltage VOU...

Page 12: ...erating Voltage 1 8 V IOUT Output Current VDS 0 5V VOUT1 1 5V 1 0 2 0 mA VDS 0 5V VOUT1 3 0V 4 0 5 0 mA ISEN Sensing pin Input Current VSEN 3 0V 0 3 1 2 A VSEN Sensing pin Input Voltage 0 7 10 V tPLH...

Page 13: ...utput Voltage 4 875 5 000 5 125 V VINmax Maximum Input Voltage 10 V Vstart Oscillator Start up Voltage No Load 0 7 0 8 V Vhold Hold on Input Voltage IOUT 1mA VIN 2 0V 1 2 V ISS1 Supply Current1 1 No L...

Page 14: ...2H EXT2 H Output Current VEXT2 VOUT1 0 4V 3 6 mA IEXT2L EXT2 L Output Current VEXT2 0 4V 7 14 mA fosc Maximum Oscillator Frequency 110 130 150 kHz Maxdty Oscillator Duty Cycle VEXT2 H 40 50 60 VCSWH C...

Page 15: ...1 8 A VINmax Maximum Input Voltage 10 V VOPTmin Minimum Operating Voltage 2 1 8 V IOUT Output Current VDS 0 5V VOUT1 1 5V 1 0 2 0 mA VDS 0 5V VOUT1 5 0V 7 0 10 0 mA ISEN Sensing Pin Input Current VSEN...

Page 16: ...EXT1 H Output Current VEXT2 VOUT1 0 4V 1 5 3 mA IEXT1L EXT1 L Output Current VEXT2 0 4V 4 8 mA fosc Maximum Oscillator Frequency 110 130 150 kHz Maxdty Oscillator Duty Cycle ON VLX L 50 65 80 VOUT1 Ou...

Page 17: ...tor Frequency 110 130 150 kHz Maxdty Oscillator Duty Cycle VEXT2 H 40 50 60 VCSWH CSW H Input Voltage VOUT1 3 0V 1 6 VOUT1 V VCSWL CSW L Input Voltage VOUT1 3 0V 0 0 4 V ICSWleak CSW Input Leakage Cur...

Page 18: ...perating Voltage 2 1 8 V IOUT Output Current VDS 0 5V VOUT1 1 5V 1 0 2 0 mA VDS 0 5V VOUT1 3 0V 4 0 5 0 mA ISEN Sensing Pin Input Current VSEN 3 0V 0 3 1 2 A tPLH Output Delay 100 s VOUT1 Detector Thr...

Page 19: ...it VOUT1 Step up Output Voltage IOUT 0mA 4 875 5 000 5 125 V VINmax Maximum Input Voltage 10 V Vstart Oscillator Start up Voltage No Load 0 7 0 8 V Vhold Hold on Input Voltage IOUT 1mA 0 7 V ISS1 Supp...

Page 20: ...FB Feed Back Voltage 0 mV VIN Maximum Input Voltage 10 V VOPTmin Minimum Operating Voltage 2 IOUT 1mA 1 8 V ISS2 Supply Current2 3 CSW H No Load 25 A Istandby Standby Current CSW L 0 3 A IEXT2H EXT2 H...

Page 21: ...AX Unit VDET Detector Threshold 4 388 4 500 4 612 V VHYS Detector Threshold Hysteresis 0 135 0 225 0 315 V ISS3 Supply Current3 1 1 8 A VINmax Maximum Input Voltage 10 V VOPTmin Minimum Operating Volt...

Page 22: ...od of time with light load These clook pulses control VFM circuit and make it possible to operate as a boost converter The output of LX1 is Nch open drain while the output of EXT1 is driven by CMOS bu...

Page 23: ...ecomes smaller temporally at light load current The output of EXT2 is driven by CMOS buffer operated VOUT1 and GND A PMOS driver will be connected to the EXT2 pin and its switching operation generates...

Page 24: ...age A B B B A Comparator Output H L L L H Tr 1 OFF ON ON ON OFF Output Tr OFF ON Indefinite ON OFF A Rb Rc VSEN Ra Rb Rc B Rb VSEN Ra Rb Rc Step 1 Output Voltage is equal to Pull up Voltage Step 2 Whe...

Page 25: ...gradually decreased and IL reaches ILmin 0 after a time period of topen so that SD is turned OFF In the case of VFM control system the output voltage is maintained constant by controlling the oscillat...

Page 26: ...ation 2 as follows PON 0 ton VIN IL t dt 0 ton VIN 2 t L dt VIN 2 ton2 2 L Equation 2 In the case of the step up DC DC converter the energy is also supplied from the input power source at the time of...

Page 27: ...0 500K R3 100K R4 300 TYPICAL APPLICATION RV5VH1 CSW VSEN VOUT1 LX1 DOUT FB EXT2 GND C2 L1 L2 D1 PMOS R3 R1 R2 C3 D2 C1 Output DC DC1 Output DC DC2 RV5VH2 CSW VSEN VOUT1 EXT1 DOUT FB EXT2 GND C2 L1 L...

Page 28: ...FB EXT2 L1 100 H 220 H GND VSEN VOUT1 LX1 L1 V 22 F A Fig 1 Test Circuit 1 CSW DOUT FB EXT2 GND VSEN VOUT1 LX1 EXT1 100k 150 A V V 5 150 Oscilloscope EXT1 Fig 2 Test Circuit 2 CSW DOUT FB EXT2 GND VSE...

Page 29: ...st Circuit 3 Typical Characteristics 20 Test Circuit 4 Typical Characteristics 22 Test Circuit 5 Typical Characteristics 2 4 Typical Application Typical Characteristics 12 CSW DOUT FB EXT2 GND VSEN VO...

Page 30: ...utput Current IOUT mA Output Voltage V OUT V 0 100 200 300 400 500 Topt 25 C L1 27 H C1 96 F VIN 1 2V VIN 0 9V VIN 2 0V VIN 1 5V RV5VH202 6 0 5 5 4 5 5 0 4 0 3 5 3 0 Output Current IOUT mA Output Volt...

Page 31: ...mA Efficiency 0 1 1 10 100 1000 Topt 25 C L1 100 H C1 22 F VIN 1 5V VIN 0 9V VIN 2 0V VIN 3 0V VIN 4 0V RV5VH102 100 75 80 85 90 95 65 70 55 60 50 Output Current IOUT mA Efficiency 0 1 1 10 100 1000 T...

Page 32: ...1 2 150 125 130 135 140 145 100 105 110 115 120 Temperature Topt C Oscillator Frequency fosc kH Z 60 40 20 0 20 40 60 80 100 VOUT1 3V RV5VH1 2 150 125 130 135 140 145 100 105 110 115 120 Temperature T...

Page 33: ...re Topt C Output Current I OUT mA 60 40 20 0 20 40 60 80 100 VOUT1 5V L Output Current H Output Current RV5VH1 2 2 1 1 2 1 4 1 6 1 8 0 0 2 0 4 0 6 0 8 Output Current IOUT mA Start up Hold on Voltage V...

Page 34: ...0 008 Temperature Topt C Feed Back Voltage V FB V 60 40 20 0 20 40 60 80 100 RV5VH1 2 20 0 6 8 10 12 14 16 18 4 2 Temperature Topt C Output Current I OUT mA 60 40 20 0 20 40 60 80 100 VOUT1 3V L Outpu...

Page 35: ...Z 60 40 20 0 20 40 60 80 100 VOUT1 5V RV5VH1 2 60 40 46 48 50 52 54 56 58 44 42 Temperature Topt C Oscillator Duty Cycle Maxdty 60 40 20 0 20 40 60 80 100 VOUT1 3V RV5VH1 2 60 40 46 48 50 52 54 56 58...

Page 36: ...2 10 16 14 4 2 VOUT1 Output Voltage VOUT1 V D OUT Output Current I DOUT mA 0 1 2 3 4 5 6 7 85 C 25 C 40 C RV5VH1 2 0 7 0 6 0 0 0 4 0 3 0 5 0 1 0 2 VSEN Output Voltage VSEN V V SEN Output Current I VSE...

Page 37: ...FB1 VDD EXT1 DOUT FB2 EXT2 GND Vref Error Amp 1 Error Amp 2 1 2 3 4 8 7 6 5 VFM2 VFM1 OSC p_shift DC DC CONVERTER CONTROLLER BOOST INVERTING OUTPUT FOR LCD RV5VH3 PIN CONFIGURATION 1 2 3 4 8 7 6 5 8 p...

Page 38: ...ut for DC DC1 Error Amplifier 3 VDD Power Supply for Device Itself Sensing Pin for Reset 4 EXT1 External Transistor Drive Pin for DC DC1 CMOS Output 5 GND Ground Pin 6 EXT2 External Transistor Drive P...

Page 39: ...utput Current VEXT1 0 4V 4 8 mA fosc Maximum Oscillator Frequency 110 130 150 kHz Maxdty Oscillator Duty Cycle ON VEXT1 L 50 65 80 VFB1 Feed Back Voltage Temp Co 40 C Topt 85 C 100 ppm C Topt VCSWH CS...

Page 40: ...Supply Current22 2 CSW H FB2 0 1V 4 A IEXT2H EXT2 H Output Current VEXT2 VDD 0 4V 2 4 mA IEXT2L EXT2 L Output Current VEXT2 0 4V 4 8 mA fosc Maximum Oscillator Frequency 110 130 150 kHz Maxdty Oscilla...

Page 41: ...e 10 V VOPTmin Minimum Operating Voltage Specified as the VDD 1 8 V Voltage for Device Operation IOUT Output Current VDS 0 5V VDD 1 5V 1 0 2 0 mA VDS 0 5V VDD 3 0V 4 0 5 0 mA tPLH Output Delay 100 s V...

Page 42: ...FM circuit and make it possible to operate as a boost converter The output of EXT1 is driven by CMOS buffer and an external NMOS driver is also available instead of an NPN transis tor in such cases th...

Page 43: ...of EXT2 is driven by CMOS buffer operated VDD and GND A PMOS driver will be connected to the EXT2 pin and its switching operation generates negative output voltage through energy accumulated in an in...

Page 44: ...Voltage A B B B A Comparator Output H L L L H Tr 1 OFF ON ON ON OFF Output Tr OFF ON Indefinite ON OFF Step 1 Output Voltage is equal to Pull up Voltage Step 2 When Input voltage VDD reaches to the s...

Page 45: ...1 C2 L2 PMOS R3 R1 R2 C3 SBD C1 NPN Tr SBD R6 R4 C4 R5 C5 L1 CoiI L1 100 H L2 100 H Diode Schottky type capacitor C1 22 F Ta C2 22 F Ta C3 0 01 F ceramic C4 0 01 F ceramic C5 0 01 F ceramic PMOS 2SJ2...

Page 46: ...K R4 300 R5 0 to 500K R6 50K Description Step up DC DC converter DC DC1 The oscillator can operate when CSW is H When the CSW is L the EXT1 outputs GND The output voltage can be adjusted by R5 and R6...

Page 47: ...d by the output of DC DC1 The PMOS transistor can operate as a switch when the CSW is L Step up DC DC converter DC DC1 The oscillator can operate when CSW is H When the CSW is L the EXT1 outputs GND T...

Page 48: ...Efficiency 0 0001 0 001 0 01 0 1 VIN 3 6V 20V 15V 10V VOUT 5 0V 2 Efficiency vs Output Current 3 CSW Load Transient Responce 1 20 15 0 10 5 5 15 10 20 Time t ms Output Voltage V OUT V 50 0 50 100 150...

Page 49: ...part number as shown below RV5VH Part Number a b c Code Contents DC DC1 type a 1 Internal LX Driver Transister Type 2 External EXT Driver Transister Type 3 Variable Output Voltage Type b Serial 01 02...

Page 50: ...mm 8 pin SSOP 0 65mm pitch 0 575 TYP 3 1 0 3 6 4 0 3 4 4 0 2 0 22 0 1 0 5 0 3 1 15 0 1 0 1 0 1 0 65 0 15 0 15 M 0 15 0 1 0 05 User Direction of Feed E1 E2 2 7MAX 0 3 0 1 4 0 0 1 2 0 0 05 8 0 0 1 3 7 6...

Page 51: ...shaped high voltage is generated by the inductor when Lx transistor is turned OFF Take the utmost care when choosing an inductor Namely choose such an inductor that has sufficiently small d c resista...

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