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Cissoid DC-DC Converters

CISSOID at NAC Semi · Power management

DC-DC Converters

Explore high-temperature buck and flyback converter technologies, evaluation boards and PWM control. Compare input and output options, then open a product page for detailed specifications and ordering information.

5 product familiesBuck & flyback convertersPWM controllers
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Compare Product Families

Converter values describe the evaluation-board configurations on the product pages. Board ambient-temperature ratings differ from IC junction-temperature ratings; customizable outputs and operating limits depend on the selected design.

5 DC-DC converter and controller families
STROMBOLIIsolated flyback15 to 40 V; 150 to 350 VDual / symmetrical ±12 V; customizable
VESUVIOBuck converter6 to 30 V; minimum depends on load5 V nominal; up to 2 A / 10 W
EREBUSBuck converterEREBUS-40: 12 to 40 V; EREBUS-50: 12 to 50 V5 V nominal; 0 to 2 A
FUJINon-isolated flyback+12 V to +28 V+5 V, +3.3 V and +1.8 V; customizable
MAGMAPWM controller6 to 30 VVoltage-mode PWM
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Product Families

Isolated flyback

STROMBOLI

  • Evaluation-board ambient temperature: −55°C to +175°C (Ta)
  • Active-component junction temperature: −55°C to +225°C (Tj)
  • Input voltage options: 15 to 40 V; 150 to 350 V
  • Output voltage: Dual / symmetrical ±12 V; customizable
  • Maximum output power: 25 W
  • Isolation: 10 MΩ at 500 VDC
  • Protection: Short-circuit current limiting and undervoltage lockout
  • Board dimensions: 102 × 152 mm
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Buck converter

VESUVIO

  • Evaluation-board ambient temperature: −55°C to +175°C (Ta)
  • Active-component junction temperature: −55°C to +225°C (Tj)
  • Input voltage: 6 to 30 V; minimum depends on load
  • Minimum input by load: 6 V below 100 mA; 7 V below 1 A; 8 V for 0–2 A
  • Evaluation-board output: 5 V nominal; up to 2 A / 10 W
  • Efficiency: Up to 93%; varies with input, load and temperature
  • Switching frequency: 230 kHz default oscillator
  • Control features: Soft start; clock synchronization input and output
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Buck converter

EREBUS

  • Evaluation-board ambient temperature: −55°C to +175°C (Ta)
  • Active-component junction temperature: −55°C to +225°C (Tj)
  • Input voltage options: EREBUS-40: 12 to 40 V; EREBUS-50: 12 to 50 V
  • Evaluation-board output: 5 V nominal; 0 to 2 A
  • Design scalability: 4 A for either version; up to 8 A for EREBUS-40, with MOSFET changes
  • Efficiency: Up to 85% at maximum power at room temperature; depends on operating conditions
  • Switching frequency: 230 kHz default oscillator
  • Control and protection: Soft start; clock synchronization input and output; short-circuit protection
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Non-isolated flyback

FUJI

  • Evaluation-board ambient temperature: −55°C to +175°C; short excursions to +200°C (maximum 1 hour)
  • IC junction temperature: −55°C to +225°C
  • Input voltage: +12 V to +28 V
  • Default outputs: +5 V, +3.3 V and +1.8 V; customizable
  • Power range: 3.5 W
  • Efficiency: Up to 68%; depends on operating conditions
  • Switching frequency: 100 kHz
  • Main components: CHT-MAGMA controller and four CHT-NMOS8001 transistors
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PWM controller

MAGMA

  • Temperature range: −55°C to +225°C
  • Control mode: Voltage-mode PWM
  • Input voltage: 6 to 30 V
  • Switching frequency: Constant frequency, adjustable from 50 to 500 kHz
  • Maximum duty cycle: Adjustable up to 90%
  • Internal voltage reference: 2.5 V
  • Control and monitoring: Input feed-forward compensation; soft start; undervoltage lockout; power-good flag
  • Clock and enable features: External synchronization; CKOUT clock output; standby and output enable
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