IC manufacturers Texas Instruments

IC manufacturers (99)

Texas Instruments SN6505 | Demoboard TIDA-020031

Automotive 400-V battery to 12-V,3.6-kW DC/DC converter reference design

Overview

TopologyFull-Bridge Converter symmetrical isolated
Input voltage2.25-5.5 V
Output 116 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

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
VINVOut1
(V)
IOut1
(mA)
Type of Insulationfswitch
(kHz)
∫Udt
(Vµs)
NPRI : NSECZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
TypeIR
(mA)
L
(mH)
VR
(V (AC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
Mount Samples
150080SS75000SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WL-SMCW SMT Mono-color Chip LED Waterclear 630 Super Red 645 60 1.9 AlInGaP 140 2 1.25 0.7 SMT
74279262SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-CBF SMT EMI Suppression Ferrite Bead 120 200 510 MHz 1350 0.3 Wide Band 500 1.6 0.8 0.8 SMT
7448052502SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-CMBNC Common Mode Power Line Choke Nanocrystalline 0.0022 25000 2.5 300 2100 Nanocrystalline 36 23 34 THT
750317722SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WE-PPTI Push-Pull Transformers 5 V (DC) 19 225 Functional 350 - 500 10 1:3.91 0.32 2500 6.73 10.2 4.19 SMT
Order Code Data­sheet Simu­lation
150080SS75000SPEC
74279262SPEC
7448052502SPEC
750317722SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
VINVOut1
(V)
IOut1
(mA)
Type of Insulationfswitch
(kHz)
∫Udt
(Vµs)
NPRI : NSECZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
TypeIR
(mA)
L
(mH)
VR
(V (AC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
Mount Samples