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Texas Instruments SN6505 | Demoboard TIDA-020031
Automotive 400-V battery to 12-V,3.6-kW DC/DC converter reference design
Overview
| Topology | Full-Bridge Converter symmetrical isolated |
| Input voltage | 2.25-5.5 V |
| Output 1 | 16 V / 1 A |
Description
This reference design is a 3.6-kW, automotive 400-V to 12-V unidirectional converter which converts the 200-V to 450-V DC input to 12-V,300-A maximum output. Circuit breaker is applied for overcurrent and overvoltage protection. The converter is designed with SiC MOSFETs on the high voltage side and driven by 5.7-kVRMS,reinforced isolated dual-channel gate drivers. The enhanced phase-shifted full-bridge controller implements programmable delays which ensure zero voltage switching (ZVS) over a wide range of operating conditions. It offers multiple lightload management features including burst mode and dynamic SR on and off control when transitioning in and out of discontinuous current mode (DCM) operation. The output implements synchronous rectification,which enables fast transient response and a high-loop bandwidth.
Features
- Phase-shifted full-bridge converter over 200- to 450-V DC input, 10- to 15-V output and power up to 3.6 kW
- Scalable to 800-V input systems with tight regulation
- Soft switching using phase-shifted full-bridge analog control loop
- Soft switching with zero voltage switching (ZVS) on the primary and dynamic on and off control on the secondary to enable higher efficiency
- Synchronization achievable for multiple
- Host MCU for supervision and current and voltage loop control
Typical applications
- Medical instruments
- Precision instruments, Low-noise filament supplies
- Isolated power supply for CAN,RS-485,RS-422,RS-232,SPI,I2C,low-power LAN, Low-noise isolated USB supplies, Process control, Telecom supplies, Radio supplies, Distributed supplies
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chip Technology | 2θ50% typ.(°) | VIN | VOut1(V) | IOut1(mA) | Type of Insulation | fswitch(kHz) | ∫Udt(Vµs) | NPRI : NSEC | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR 2(mA) | RDC max.(Ω) | Type | IR(mA) | L(mH) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMCW SMT Mono-color Chip LED Waterclear, 630 nm, Super Red | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]630 nm | Emitting ColorSuper Red | Peak Wavelength [typ.]645 nm | Luminous Intensity [typ.]60 mcd | Forward Voltage [typ.]1.9 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Length2 mm | Width1.25 mm | Height0.7 mm | MountSMT | ||||
 | WE-CBF SMT EMI Suppression Ferrite Bead, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Impedance @ 100 MHz120 Ω | Maximum Impedance200 Ω | Maximum Impedance510 MHz | Rated Current 21350 mA | DC Resistance0.3 Ω | TypeWide Band | Rated Current500 mA | – | – | – | – | Length1.6 mm | Width0.8 mm | Height0.8 mm | MountSMT | ||||
 | WE-CMBNC Common Mode Power Line Choke Nanocrystalline, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMBNC Common Mode Power Line Choke Nanocrystalline | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | DC Resistance0.0022 Ω | – | Rated Current25000 mA | Inductance2.5 mH | Rated Voltage300 V (AC) | Insulation Test Voltage2100 V (AC) | MaterialNanocrystalline | Length36 mm | Width23 mm | Height34 mm | MountTHT | ||||
 | WE-PPTI Push-Pull Transformers, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PPTI Push-Pull Transformers | – | – | – | – | – | – | – | Input Voltage 5 V (DC) | Output Voltage 119 V | Output Current 1225 mA | Type of InsulationFunctional | Switching Frequency 350 - 500 | Voltage-µSecond10 Vµs | Turns Ratio1:3.91 | – | – | – | – | – | – | – | Inductance0.32 mH | – | Insulation Test Voltage2500 V (AC) | – | Length6.73 mm | Width10.2 mm | Height4.19 mm | MountSMT |