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650W Power Stage Without Heat Sink Reference Design for Low-Frequency Offline UPS and Inverters
TIDA-01292
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
- 650-W Power Stage Without Heat Sink Ref Design or Low-Frequency Offline UPS (Rev. B)
(PDF 3205 KB)
25 Jun 2019
Description
This reference design is a 650-W inverter power stage designed for low-frequency (transformer-based), single-phase UPS operating from a 12-V battery. The design enables low form factor and high-efficiency implementation, taking advantage of the TI SMD MOSFET in a SON5x6 package with very low RDS(on) and low gate charge (Qg). Using two devices in parallel for each leg of the full-bridge power stage, the power stage eliminates the need of a heat sink, which reduces overall system cost.
Features
- Designed for standby or offline UPS from 100 VA to 850 VA; can be extended up to 1.5 kVA with additional FETs in parallel
- Solution with SMD MOSFETs enhances manufacturability and assembly of UPS
- No heat sink for power dissipation reduces system cost and production time
- Tested and validated for 100-W to 650-W operation with bulb loads
- Typical efficiency of ≈95%, maximum efficiency of >98.5%
- Protections for overcurrent, short circuit, overvoltage, and undervoltage
See the Important Notice and Disclaimer covering reference designs and other TI resources.
