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Simulator Schematics

What is the Diodes Circuit Simulator?

  • The Diodes Circuit Simulator is a free downloadable simulator which allows you to draw a circuit which can be tested in simulation prior to prototyping.
  • By using Diodes Spice models, the designer can quickly determine the best components for the application
  • The Diodes Simulator is an analog simulator ideally suited for power circuit blocks.

Instructions

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  4. Run the installer
  5. Once the application is installed, you may download and open as many schematics as you wish

This collection of simulations are design ideas that demonstrate circuits using Diodes solutions.

The circuits can be used as an aid before actual build of the circuit. However, as with all simulations not all aspects of real circuit performance is modeled and care should be taken with interpretation.

Part number Application area
Circuit description Circuit notes down load Associated documents Download schematic
 1N4006 Power Management Cockcroft-Walton Voltage Multiplier providing 2.75kV DC from mains input     Cockcroft_Walton_Voltage_Multiplier.sxsch
 Adjustable References Power Management The design shows a simple way to implement a series voltage regulator with current limit using two references.   AN59 AN59-02-SeR.sxsch
 Adjustable References Power Management The design shows a simple way to double the operating voltage range of a reference.   AN61 AN61-01-Ref-ZR431.sxsch
 Adjustable References Power Management The design shows a simple way to increase the operating voltage range of a reference by adding a zener diode in series within the feedback loop.   AN61 AN61-03-Ref-Zener-Reg.sxsch
 Adjustable References Power Management The design shows a simple way to increase the operating voltage range of a reference by using two references.   AN61 AN61-HVShR-ZR431.sxsch
 Adjustable References Power Management The design shows how two references could be used to implement a voltage window comparator.   AN62 AN62-11-WinComp.sxsch
 Adjustable References Power Management The design shows a simple method of using References to implement precision current source (loade = R4) or sink (load = R3). The simlulation combines both. Note that the circuit has a better performance as a current sink than as a current source.   AN62 AN62-12-CSo-CSi.sxsch
 AP393
 ZXCT1009
Power Management Current monitor circuit to detect cooling system failure and disable driver     Cooler_failure_protection.sxsch
 BFS17H
 ZXTP25012EFH
DBS 120MHz video amplifier circuit with gain of 10     Video_Amplifier.sxsch
 FMMT458
 FMMT459
 FMMT559
Power Management 400V bipolar Full-bridge driver circuit     H-Bridge-NDB.sxsch
 FMMT2369A
 FMMT617
 FMMT618
Power Management AN18_A Circuit shows a method of maintaining the correct drive level and drive phase, when deriving a control signal from a 5V logic based controller, by driving the emitter of a fast switching pre-driver transistor, FMMT2369A The transient simulation itime is 600us. The emmitter Voltage and gate drive are monitored. current are monitored   AN18 AN18_A.sxsch
 FMMT459 Power Management The design shows the use of a Diodes medium voltage bipolar transistor as the start up switch for a switch mode power supply.   DN82A DN82_bipolar.sxsch
 FMMT49
 FMMT591
Power Management AN18_B Circuit shows a level shifted driver for a PMOS device. The turn on speed is controlled by resistors R1 and R3. Q3 acts as a level shifter and an inverter of the control input signal The transient simulation itime is 1ms. The emmitter Voltage and gate drive are monitored. current are monitored   AN18 AN18_B.sxsch
 ZR431 Power Management Using a reference as an AC amplifier   AN66 AN66-Ref-Amplifier.sxsch
 ZR431 Power Management Using a shunt regulator as a summing amplifier.   AN67 AN67-Ref-Add-Mx.sxsch
 ZTX650 Power Management DN28 ZTX650 based 6W inverter for MOS logic supply.   DN28 DN28.sxsch
 ZTX653 Power Management AN2 12 to 20V Flyback Convertor for portable Ni-Cd charger   AN2 AN2_12_to_20V_Flyback_Convertor.sxsch
 ZVN4525E6
 ZXTx25015
Power Management Showing a MOSFET startup switch in a flyback convertor     MOSFET_start-up_switch_in_flyback_converter.sxsch
 ZVN4525E6
 ZXTx25015
Power Management Showing a MOSFET startup switch with protection in a flyback convertor     MOSFET start-up switch with protection.sxsch
 ZXCT1009 Power Management AN39-1-Fig-10A-1009 The design shows a ZXCT1009 used to implement a current monitor that operates with over-voltage well above the rated 20V without suffering damage. The simulation is a transient one run over 1ms with a supply that ranges from 0 to 60V. The input voltage, Output voltage and level shifted output voltage are monitored AN39-1-Fig-10x-1009 AN39 AN39-1-Fig-10A-1009.sxsch
 ZXCT1009 Power Management AN39-1-Fig-10B-1009 The design shows a ZXCT1009 used to implement a circuit that is protected against transient voltages of up to 400V amplitude. The simulation is a transient one run over 1ms with a voltage spike of 400V 4µs on top of a 20V supply. The input voltage, Output voltage and level shifted output voltage are monitored AN39-1-Fig-10x-1009 AN39 AN39-1-Fig-10B-1009.sxsch
 ZXCT1009 Power Management AN39-1-Fig-6-1009 The design shows a ZXCT1009 used to implement a basic current monitor. The simulation is a transient one run over 1ms with a supply varying from 0 to 20V. Vin, output current and output voltage are monitored AN39-1-Fig-6-1009 AN39 AN39-1-Fig-6-1009.sxsch
 ZXCT1010 Power Management AN39-1-Fig-12-1010 The design shows a ZXCT1010 used to implement a 200V high side current monitor by "standing" it on a high voltage transistor. Two versions are shown side by side. One with a constant current load demonstrating the good common mode rejecton capability, the other with a resistive load showing linearity. AN39-1-Fig-12-1010 AN39 AN39-1-Fig-12-1010.sxsch
 ZXCT1010 Power Management This design shows how a ZXCT1010 (for example) may be used to implement a 1kV current monitor.     CM-1kV-1010.sxsch
 ZXCT1010 Power Management This design shows the ZXCT1010 being used as a constant current source.     CM-LED-Driver-1010.sxsch
 ZXCT1012 Power Management ZXCT1012 datasheet circuit     ZXCT1012_basic_circuit.sxsch
 ZXCT1020 Power Management ZXCT1020 datasheet circuit     ZXCT1020_basic_configuration.sxsch
 ZXCT1021 Power Management This design shows a ZXCT1021 used to implement a x10 AC amplifier. It offers the benefit of being physically smaller than an op-amp equivalent circuit and uses one component fewer.     AC-Amp-1021.sxsch
 ZXCT1022 Power Management This design shows a ZXCT1022 used to implement a x100 AC amplifier. It offers the benefit of being smaller than an op-amp equivalent circuit and uses one component fewer.     AC-Amp-x100-1022.sxsch
 ZXCT1030 Power Management AN39-1-Fig-22-1030 The design shows a ZXCT1030 used to implement a precision electronic fuse or latching over-current monitor. The simulation is a transient one run over 10ms with a current that ramps up from 0 until the circuit finally trips around 180mA. Several key points are monitored AN39-1-Fig-22-1030 AN39 AN39-1-Fig-22-1030.sxsch
 ZXCT1032 Power Management ZXCT1032 datasheet circuit     ZXCT1032_datasheet_circuit.sxsch
 ZXCT1041 Power Management AN39-1-Fig14-1041 The design shows a ZXCT1041 used to implement a bidirectional current monitoring applicaiton. The simulation is a transient one run over 1ms with the current alternating between ±100mA. The Vin Flag and Vout are monitored AN39-1-Fig-14-1041 AN39 AN39-1-Fig-14-1041.sxsch
 ZXCT1041 Power Management AN39-1-Fig-14-1009 The design shows two ZXCT1009 being used to implement a bidirectional current monitoring application. The simulation is a transient one run over 1ms with current altering between +/-10mA. AN39-1-Fig-14-1009 AN39 AN39-1-Fig-14-1009.sxsch
 ZXCT1041 Power Management This design shows the ZXCT1041 used to implement a full wave precision rectifier.   AN55 Precision-Rectifier-1041-0810.sxsch
 ZXCT1050 Power Management AN39 Fig 29 The design shows a ZXCT1050 used to implement a current monitor that operates at a higher supply voltage than 20V (30V) and still has a common mode range that includes ground. The simulation is a transient one run over 1ms. Several key points are monitored   AN39 AN39-1-Fig-29-1050.sxsch
 ZXCT1050 Power Management ZXCT1050 Low Side Monitor     ZXCT1050_as_low_side_monitor_on_a_-ve rail.sxsch
 ZXCT1050
 ZXCT1009
Audio Over current protection circuit for audio amplifiers or dual-rail applications     Over_Current_Protection_in_Audio.sxsch
 ZXCT1051 Power Management This design shows a ZXCT1051 used to implement a x10 AC amplifier. it offers the benefit of being smaller than an op-amp equivalent circuit and uses three components fewer.     AC-Amp-1051.sxsch
 ZXCT1080 Power Management ZXCT1080 datasheet circuit     ZXCT1080_basic_configuration.sxsch
 ZXGD3002 Lighting High current non-inverting gate drive for IGBT in medium power ballast   AN52 AN52_ZXGD3002.sxsch
 ZXLD1320 Lighting The design shows a ZXLD1320 driving 1 Common Anode LED connection at 1500mA from 6-18Vdc     ZXLD1320_Common_Anode.sxsch
 ZXLD1320 Lighting ZXLD1320 EV1 Circuit driving 1 LED at 1500mA from 6-18Vdc     ZXLD1320_EV1.sxsch
 ZXLD1320 Lighting ZXLD1320 EV3 with an external Mosfet switch driving 1 LED at 2800mA from 6-18Vdc     ZXLD1320_EV3_2.8A_with_ext_switch.sxsch
 ZXLD1321 Lighting ZXLD1321 EV1 Circuit driving 1 LED at 1000mA from 2-3Vdc     ZXLD1321_EV1.sxsch
 ZXLD1321 Lighting ZXLD1321 SEPICcirciut driving 1 LED at 500mA from 2-6Vdc     ZXLD1321_500mA_SEPIC_LED_driver.sxsch
 ZXLD1322 Lighting ZXLD1322 EV1 Circuit driving 1 LED at 500mA from 2-6Vdc     ZXLD1322_EV1.sxsch
 ZXLD1350 Lighting ZXLD1350 Datasheet Circui tdriving 1 LED at 350mA from 30Vdc     ZXLD1350_datasheet_circuit.sxsch
 ZXLD1350 Lighting ZXLD1350 driving 6 LEDs at 350mA from 30Vdc using DC dimming features     ZXLD1350_DC_dimming .sxsch
 ZXLD1350 Lighting ZXLD1350 driving 6 LEDs at 350mA from 30Vdc with PWM dimming     ZXLD1350_PWM_dimming.sxsch
 ZXLD1350 Lighting DN83 The design shows a ZXLD1350 driving up to 3 LED's at 300mA from and input Voltage of 12Vac or 12Vdc. R1 is a thermistor and varies from 10k at 25C to about 1.5k at 70 C.As soon as R1 decrease the emitter follower Q1 starts to sink current from the ADJ pin reducing the LED current and hence the temperature. The transient simulation itime is 2ms. The Sense voltage and Voltage and LED current are monitored   DN83 DN83.sxsch
 ZXLD1350 Lighting DN86 The design shows a ZXLD1350 driving 3 LEDs at 300mA from 12Vac or 12Vdc as an MR16 replacement   DN86 DN86.sxsch
 ZXLD1350 Lighting AN48_1A This design shows a ZXLD1350 and external bipolar devices driving up to 6 leds in series at 1A from a 30V supply.   AN48 AN48_1A.sxsch
 ZXLD1350 Lighting AN48_700mA This design shows a ZXLD1350 and external bipolar devices driving up to 6 leds in series at 700mA from a 30V supply.   AN48 AN48_700mA.sxsch
 ZXLD1350
 ZXSBMR16
Power Management DN89 EMC compliant ZXLD1350 MR16 circiut driving 3 LED's at 350mA from 12Vdc.   DN89 DN89_MR6_with_Caps_and_EMC_filter.sxsch
 ZXLD1356 Lighting ZXLD1356 driving up to 10 white LEDs at 550mA from 60 Vdc in Common Anode configuration     ZXLD1356_Common_Anode.sxsch
 ZXLD1356 Lighting ZXLD1356 Datasheet circuit driving up to 15 LEDs at 550mA from 60Vdc     ZXLD1356_Datasheet_circuit.sxsch
 ZXLD1356 Lighting ZXLD1356 driving 15 white LEDs from 0 to 550mA at 60Vdc using DC dimming     ZXLD1356_DC_Dimming.sxsch
 ZXLD1356 Lighting ZXLD1356 driving up to 15 LEDs at 550mA from 60Vdc with PWM Dimming     ZXLD1356_PWM_Dimming.sxsch
 ZXLD1356 Lighting ZXLD1356 driving up to 15 LEDs at 550mA from 60Vdc with Soft Start     ZXLD1356_Soft_Start.sxsch
 ZXLD1360 Lighting ZXLD1360 Datasheet Circuit driving 1 LED at 1A from 12Vdc     ZXLD1360_Datasheet_Circuit.sxsch
 ZXLD1360 Lighting ZXLD1360 driving 6 LEDs at 1A from 30Vdc using DC dimming     ZXLD1360_DC_dimming.sxsch
 ZXLD1360 Lighting ZXLD1360 driving 6 LEDs at 1A from 30Vdc with PWM dimming     ZXLD1360_PWM_dimming.sxsch
 ZXLD1360 Lighting ZXLD1360 driving 6 LEDs at 1A from 30Vdc with Soft Start     ZXLD1360_Soft_Start.sxsch
 ZXLD1360 Lighting ZXLD 1360 driving 3 white LEDs at 700mA average from 12Vac, without smoothing capacitors.   AN56 ZXLD1360_from_12Vac_no_caps.sxsch
 ZXLD1362 Power Management AN57 EMC compliant ZXLD1362 circuit driving a LED at 350mA from 12Vdc   AN57 AN57_1362_emc_compliant_at_350mA.sxsch
 ZXLD1362 Lighting ZXLD1362 Datasheet circuit driving 12 LEDs at 1A from 60Vdc     ZXLD1362_Datasheet_circuit.sxsch
 ZXLD1362 Lighting ZXLD1362 driving 12 LEDs at 1A from 60Vdc with PWM Dimming     ZXLD1362_PWM_Dimming.sxsch
 ZXLD1362 Lighting ZXLD1362 driving 12 LEDs at 1A from 60Vdc using DC dimming     ZXLD1362_DC_Dimming.sxsch
 ZXLD1362 Lighting ZXLD1362 driving 12 LEDs at 1A from 60Vdc with Soft Start     ZXLD1362_SoftStart.sxsch
 ZXLD1362 Lighting ZXLD1362 driving 10 LEDs at 1A from 60 Vdc in Common Anode configuration     ZXLD1362_Common_Anode.sxsch
 ZXLD1362 Lighting ZXLD1362 driving 10 LEDs in common anode configuration at 1A from 60V   AN64 ZXLD1362_Common_Anode.sxsch
 ZXLD1366 Lighting ZXLD1366 driving up to 10 white LEDs at 1A from 60 Vdc in Common Anode configuration     ZXLD1366_Common_Anode.sxsch
 ZXLD1366 Lighting ZXLD1366 Datasheet circuit driving up to 15 LEDs at 1A from 60Vdc     ZXLD1366_Datasheet_circuit.sxsch
 ZXLD1366 Lighting ZXLD1366 driving 15 LEDs at 1A from 60Vdc using DC dimming     ZXLD1366_DC_Dimming.sxsch
 ZXLD1366 Lighting ZXLD1366 driving up to 15 LEDs at 1A from 60Vdc with Soft Start     ZXLD1366_Soft_Start.sxsch
 ZXLD136x Lighting ZXLD1360 with 2 wire linear dimming of a single LED up to 14V     ZXLD1360_2_wire_linear_dimming.sxsch
 ZXMN0545FF Power Management The design shows the use of a Diodes high voltage MOSFET as the start up switch for a switch mode power supply.   DN82B DN82_MOSFET.sxsch
 ZXMN4A06 Power Management Forward Convertor from 42V to 3.3V with Active Clamp     Active_clamp_forward_DC-DC_converter.sxsch
 ZXMN4A06 Power Management 200V to 3.3V synchronous rectified flyback convertor     Synchonous_rectified_flyback_power_supply.sxsch
 ZXSC 310 Lighting A simple way to protect a ZXSC310 cct from LED removal.     ZXSC310_no_LED_protection.sxsch
 ZXSC300 Lighting AN50: ZXSC300 with feed forward compensation   AN50 AN50_ZXSC300_with_feed_forward_compensation.sxsch
 ZXSC310 Lighting ZXSC310EV4 circiut driving a LED with PWM dimming     ZXSC310_PWM_dimming.sxsch
 ZXSC310 Lighting AN65 Figure 6 ZXSC310 Simple diode Under Voltage Lock Out circuit   AN65 Diode_UVLO_310_AN65_10nov08.sxsch
 ZXSC310 Lighting AN65 Figure 8 ZXSC310 Hysteretic Under Voltage Lock Out circuit   AN65 Hysteretic_UVLO_310_AN65_10nov08.sxsch
 ZXSC310 Lighting AN65 Figure 1 ZXSC310 Boost circuit   AN65 ZXSC310_AN65_Basic.sxsch
 ZXSC310 Lighting AN44 The design shows the ZXSC310 configured as a buck convertor, driving 3 LEDs at about 300mA from a 12V input.   AN44 AN44.sxsch
 ZXSC400 Lighting DN67. This design shows a ZXSC400 driving a 1W led at a nominal 350mA from a 3V input. The transient simulation itime is 1ms. The Sense voltage and Voltage feedback pins are monitored   DN67 DN67.sxsch
 ZXSC310 Lighting DN73 Design shows ZXSC310 driving a 3W LED in buck mode. The input voltage ranges from 3.8V to 6.2V with a maximum output current of 1.11A at 6V input. The transient simulation itime is 1ms. The Sense voltage and Voltage and LED current are monitored   DN73 DN73.sxsch
 ZXSC310 Lighting DN75 This circuit shows a ZXSC310 LED driver circuit for a solar powered garden light. The design shows the output current holding up as the input Voltage decays below .5V, with an output current of about 45mA at 1V input. The transient simulation itime is 2ms. The Sense voltage and Voltage and LED current are monitored   DN75 DN75.sxsch
 ZXSC310 Lighting DN78 The ZXSC310 and transistor Q1 can be damaged if the battery is put in the flashlight the wrong way. Circuit shows a method of reverse protection for the ZXSC310 by adding current limiting resistor and Schottky diode. The transient simulation itime is 2ms. The Sense voltage and Voltage and LED current are monitored   DN78 DN78.sxsch
 ZXSC310 Lighting DN69 The schematic shows a ZXSC310 driving 4 LED in parallel. The input voltage ranges from 1.7V to 2.5V with maximum output current of 160mA at 2.4V input. A pwm signal is applied to the Ven input. The transient simulation itime is 10ms to show the pwm signal. The Sense Voltage and current through 1 LED are monitored.   DN69 DN69.sxsch
 ZXSC310 Lighting DN61 The circuit shows the ZXSC310 LED driving a 1W LED. The solution is optimized to drive the 1W LED at 350mA DC current from a dual cell input. PWM is applied to the Ven pin to adjust the brightness without changing the colour. The transient simulation time is 20ms to show the pwm effect. The Sense Voltage, LED current and PWM driveVoltage are monitored.   DN61 DN61.sxsch
 ZXSC310 Lighting DN62 This design shows a ZXSC310 driving 3 LEDs at between 8 and 15mA as the input Voltage varies from 3V to 4.3V. The transient simulation runs for 1ms. The Sense Voltae pins and LED current are monitored   DN62 DN62.sxsch
 ZXSC310 Lighting DN63 The deisign uses a ZXSC310 to drive 8 white leds in seriesand is optimized for an input voltage range of 3.5V to 4V. The LED current is set to approximately 25mA at 4V input voltage . A pwm wave form applied to the Ven pin reduces the average LED current without changing the colour. The transient analysis runs for 5ms. The Sense Voltage and LED current are monitored.   DN63 DN63.sxsch
 ZXSC310 Lighting DN64 The design is a flashlight example using a ZXSC310 to drive 4 white leds at about 20mA from a 2 cell input. The transient simulation itime is 1ms. The Sense Voltage and LED current are monitored   DN64 DN64.sxsch
 ZXSC310 Lighting DN65 This solution iuses a ZXSC310 driving 8 white LEDs connected in series at about 20mA from a 4 cell input for an emergency light. The transient simulation itime is 2ms. The Sense Voltage and LED current are monitored   DN65 DN65.sxsch
 ZXSC400 Lighting DN67 The design shows a ZXSC400 driving a 1W led at a nominal 350mA from a 3V input The transient simulation itime is 1ms. The Sense voltage and Voltage feedback pins are monitored   DN67 DN67.sxsch
 ZXSC400 Lighting DN70 The design shows a ZXSC400 driving a 1W LED at about 350mA with current control. The transient simulation itime is 5ms. The Sense Voltage and Voltage feedback pins are monitored   DN70 DN70.sxsch
 ZXSC400 Lighting DN71 The design shows a ZXSC400 driving 2 1W LEDs at about 700mA from 3V with current control. The transient simulation itime is 5ms. The Sense voltage and Voltage feedback pins are monitored.   DN71 DN71.sxsch
 ZXSC400 Lighting DN84 The design shows a ZXSC400 driving a 3W led with low loss current control. The transient simulation itime is 2ms. The Sense Voltage, feedbackVoltage and LED current are monitored   DN84 DN84.sxsch
 ZXSC400 Lighting DN85 The design shows a ZXSC400 cnfigured as a buck convertor driving a 3W LED at 350mA. The transient simulation itime is 5ms. The Sense voltage and Voltage and LED current are monitored   DN85 DN85.sxsch
 ZXSC400 Power Management ZXSC400 in Voltage boost mode from 5V - 12V     ZXSC400_5V_to_12V_Boost.sxsch
 ZXSC400 Lighting ZXSC400 with pseudo-Darlington increasing the output power of the ZXSC400 to drive 8 LED's     ZXSC400_to_8x_white_led.sxsch
 ZXSC400 Lighting ZXSC400 driving 15 LEDs at 20mA current from 12V     ZXSC400_driving_15_LEDs.sxsch
 ZXSC440 Power Management ZXSC440 in a 5V-300V boost circuit     ZXSC440_5V_to_300V_boost.sxsch
 ZXTN19020CFF Lighting AN17 Resonant push-pull inverter for low DC to high AC voltage conversion for emergency lighting   AN17 AN17_Royer_driving_Flourescent.sxsch
 ZXTN2015
 ZXTP2015
Power Management 155V to 6V Quasi Resonant Flyback Converter     Quasi-resonant_Flyback_converter.sxsch
 ZXTN25040DFH Lighting DN55: High efficiency Royer driver for CCFLs using BJTs   DN55 DN55_bjt_Royer.sxsch
 ZXTP25020
 FZT851
Audio Precision Voltage Regulator designed for low-noise applications   AN51 Low_Noise_Voltage_Regulator.sxsch
 ZXTX25015 Power Management 155 to 7V flyback convertor with start-up switch     Start-up_switch_in_flyback_converter.sxsch

No telephone support is currently offered for these circuits.

Applications disclaimer

The circuits in this design/application note are offered as design ideas. It is the responsibility of the user to ensure that the circuit is fit for the user's application and meets with the user's requirements. No representation or warranty is given and no liability whatsoever is assumed by Diodes with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. Diodes does not assume any legal responsibility or will not be held legally liable (whether in contract, tort (including negligence), breach of statutory duty, restriction or otherwise) for any damages, loss of profit, business, contract, opportunity or consequential loss in the use of these circuit applications, under any circumstances.


PowerDI and SBR are registered trademarks of Diodes Incorporated.

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