15-W System-Degree Energy Reference Design for Automotive Physique Management Module.
The TIDA-00745 is a 14-W switched-mode energy provide (SMPS) design specified for automotive physique management modules. It employs a buck converter working at 2.1 MHz. It has a 15-W pre-boost circuit to assist begin and cease situations or chilly crank situations. The SMPS can assist a low VIN. The reference design is optimised for a large enter voltage from 3.55V – 36V. It’s certified for automotive utility and comes with AEC-Q100 certification. The SMPS has a system effectivity of 86.5% at full load at 12 VIN.
The traditional working frequency for all of the synchronous buck converters that the design makes use of (LM53601,LM53602, and LM26420) is 2.1 MHz, which permits the usage of small passive parts. At 2.1 MHz, the frequency is above the AM band, permitting a big enter filtering saving. These elements have low, unloaded present consumption and don’t require an exterior back-up LDO. The low shutdown present and excessive most working voltage of the LM53601-Q1 and LM53602-Q1 units additionally eradicate the requirement of an exterior load swap.
The design will be divided into 4 main blocks together with EMI filter, Preboost circuit, Buck converter and downstream LDOs with trackable output voltage.
Options of the reference design:
• Lossless bypass operation; keep away from loss in increase diode
• Extensive Vin built-in front-end DC/DC converters: LM53603-Q1, LM53601-Q1
• Cross CISPR 25 Class Three FM radio band
• ICs AEC-Q100 certified
• 3.5-V to 30-V (20-V OVP) broad Vin vary; helps chilly cranking situations
TI has examined this reference design. It comes with complete software program, firmware libraries, instruments, battery, and so on. You’ll find further knowledge concerning the reference design on the corporate’s web site. To learn extra about this reference design click on right here.