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產品規格表
UCC25800-Q1
- High-efficiency half-bridge transformer driver
- Ultra-low EMI with low interwinding capacitance
- Smaller and lower-cost transformer
- Programmable frequency: 0.1 MHz to 1.2 MHz
- Wide input voltage range: 9 V to 34 V
- 9 W from 34-V input
- 6 W from 24-V input
- 4 W from 15-V input
- Automatic dead-time adjustment with maximum dead-time programming
- External clock synchronization for low noise
- Robust protection features
- Undervoltage lockout (UVLO)
- Programmable over-current protection (OCP)
- Input overvoltage protection (OVP)
- Over temperature protection (TSD)
- Integrated soft-start to reduce in-rush current
- External disable function with fault-code output
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, T A
- Functional Safety-Capable
- Documentation available to aid functional safety system design
- 8-Pin DGN package with thermal pad
The UCC25800-Q1 ultra-low EMI transformer driver integrates the switching power stage, the control, and the protection circuits to simplify isolated bias supply designs. It allows the design to utilize a transformer with higher leakage inductance, but much smaller parasitic primary-to-secondary capacitance. This low-capacitance transformer design enables an order of magnitude reduction in the common-mode current injection through the bias transformer. This makes the transformer driver an ideal solution for the isolated bias supply in various automotive applications to minimize the EMI noise caused by the high-speed switching devices. The soft-switching feature further reduces the EMI noise.
The transformer driver has a programmable frequency range of 100 kHz to 1.2 MHz. This high switching frequency reduces the transformer size and footprint, as well as the overall cost of the bias supply. The integrated SYNC function allows the system bias supplies to synchronize with an external clock signal, further reducing the system level noise.
The dead-time adjusts automatically to minimize the conduction loss and simplify the design. The programmable maximum dead-time ensures power stage design flexibility.
With the integrated, low-resistance switching power stage, the transformer driver can achieve a 6-W design with 24-V input, and up to 9-W from 34-V input. With a fixed input voltage, the open-loop control also helps the output regulation to remain ±5% when the load is above 10%.
The programmable overcurrent protection (OCP) allows flexibility on the power stage design to minimize the transformer size. The protection features such as adjustable OCP, input OVP, TSD and the protection from pin faults ensure robust operation. A fixed 1.5-ms soft-start period reduces the inrush current during start-up and fault recovery.
The transformer driver also provides a dedicated multi-function pin for external disabling, and fault code reporting. The fault code reporting sends the fault code once the bias supply is in the protection mode.
The UCC25800-Q1 transformer driver is offered in an 8-pin DGN package with the thermal pad to enhance its thermal handling capability.
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開發板
UCC21710QDWEVM-054 — 適用 Wolfspeed® 1200-V SiC 平台的 UCC21710 評估模組
UCC21710QDWEVM-054 是精巧型半橋閘極驅動器評估模組，由兩個單通道及隔離式閘極驅動器組成。此評估模組可針對數種不同 Wolfspeed® 碳化矽 (SiC) MOSFET 模組和離散式 SiC MOSFET，以及具備類似接腳配置的其他絕緣柵極雙極電晶體 (IGBT) 或 SiC MOSFET 模組，提供驅動所需的供應電壓、驅動、保護與監控功能。
使用指南: PDF
開發板
UCC21750QDWEVM-054 — 適用 Wolfspeed® 1200-V SiC 平台的 UCC21750 評估模組
UCC21750QDWEVM-054 是精巧型半橋閘極驅動器評估模組，由兩個單通道及隔離式閘極驅動器組成。該評估模組針對數種不同 Wolfspeed® 碳化矽 (SiC) MOSFET 模組和離散式 SiC MOSFET，以及具備類似接腳配置的其他絕緣柵極雙極電晶體 (IGBT) 或 SiC MOSFET 模組，提供驅動所需的供應電壓、驅動、保護與監控功能。
使用指南: PDF
開發板
UCC25800EVM-1 — 具有 6-V 至 26-V DC 輸入和 18-V 和 5-V 輸出且適用於 2-W LLC 轉換器的 UCC25800 評估模組
此隔離式開迴路 LLC 變壓器驅動器轉換器以裝置 UCC25800 為基礎，具有一對輸出 (+18-V 和 -5-V)，並從 6-V 至 26-V DC 輸入提供高達 2 W 的輸出功率，以為牽引逆變器和工業逆變器應用提供絕緣式偏壓電源至 SiC MOSFET 或 IGBT 閘極驅動器。LLC 拓撲會使變壓器有明顯漏感，但主要至次要電容卻小很多，因此可大幅減少透過偏壓變壓器的共模電流注入。以 UCC25800 為基礎的 LLC 轉換器以精巧外型尺寸提供高度整合、低成本與高效率。
| 封裝 | 引腳 | 下載 |
|---|---|---|
| HVSSOP (DGN) | 8 | 檢視選項 |
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