产品详细信息

Vin (Max) (V) 34 Vin (Min) (V) 9 Iout (Max) (A) 1 Features Adjustable Switching Frequency, Current Limiting, Enable/Shutdown, Resonant, Soft Start, Thermal shutdown Operating temperature range (C) -40 to 125 Regulated outputs (#) 1 Package type Leaded TI functional safety category Functional Safety-Capable
Vin (Max) (V) 34 Vin (Min) (V) 9 Iout (Max) (A) 1 Features Adjustable Switching Frequency, Current Limiting, Enable/Shutdown, Resonant, Soft Start, Thermal shutdown Operating temperature range (C) -40 to 125 Regulated outputs (#) 1 Package type Leaded TI functional safety category Functional Safety-Capable
HVSSOP (DGN) 8 9 mm² 3 x 3
  • 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, TA
  • Functional Safety-Capable
  • 8-Pin DGN package with thermal pad
  • 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, TA
  • Functional Safety-Capable
  • 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.

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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类型 标题 下载最新的英文版本 日期
* 数据表 UCC25800-Q1 Ultra-low EMI Transformer Driver for Isolated Bias Supplies 数据表 (Rev. B) 2021年 9月 22日
更多文献资料 Isolated bias supply solutions for isolated gate drivers 2021年 12月 15日
应用手册 Bias Supply Design for Isolated Gate Driver Using UCC25800-Q1 (Rev. A) 2021年 12月 1日
用户指南 Using the UCC25800EVM-037 2-W LLC Half-Bridge Converter with Pre-Regulator (Rev. A) 2021年 10月 12日
功能安全信息 UCC25800-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA 2021年 9月 1日
证书 UCC25800EVM-037 EU RoHS Declaration of Conformity (DoC) 2020年 12月 16日

设计与开发

有关其他条款或所需资源,请点击下面的任何链接来查看详情页面。

评估板

UCC25800EVM-1 — 适用于 UCC25800 6V 至 26V 直流输入、18V 和 5V 输出、2W LLC 转换器的评估模块

此隔离式开环 LLC 变压器驱动器转换器基于器件 UCC25800,具有一对输出(+18V 和 -5V),在 6V 至 26V 直流输入电压下可提供高达 2W 的输出功率,从而为牵引逆变器和工业逆变器应用的 SiC MOSFET 或 IGBT 栅极驱动器提供隔离式偏置电源。LLC 拓扑使变压器具有较大的漏电感和超小的初级至次级电容,从而大大减少了通过偏置变压器注入的共模电流。基于 UCC25800 的 LLC 转换器可实现紧凑的外形、高集成度、低成本和高效率。

现货
数量限制: 1
支持软件

UCC25800-Q1 design Calculator

SLUC705.ZIP (604 KB)
仿真模型

UCC25800-Q1 SIMPLIS Transient Model

SLUM781.ZIP (152 KB) - SIMPLIS Model
参考设计

PMP40980 — 适用于车载充电器应用的多输出隔离式 SiC 驱动器偏置电源参考设计

此参考设计是一款开环 LLC 转换器,可为车载充电器应用提供四个 18V 和 2.5V 输出以及高达 2.4W 的功率。UCC25800-Q1 可用作控制器。LLC 拓扑使变压器具有较大的漏电感和超小的初级至次级电容,从而大大减少了通过偏置变压器注入的共模电流。
参考设计

PMP22835 — 适用于牵引逆变器应用的隔离式 IGBT 和 SiC 驱动器偏置电源参考设计

此隔离式开环 LLC 变压器驱动器转换器可以为牵引逆变器应用提供最高 6W 的 +20V 和 -4V 双路输出。LLC 拓扑使变压器具有较大的漏电感和超小的初级至次级电容,从而大大减少了通过偏置变压器注入的共模电流。该参考设计可实现紧凑的外形、高度集成和高效率。 
参考设计

PMP23061 — Pre-regulated isolated driver bias supply reference design for traction-inverter applications

这款前置稳压、隔离式开环 LLC 变压器驱动器转换器参考设计可为牵引逆变器应用提供总功率高达 6W 的四路 18V 输出。LLC 拓扑使变压器具有较大的漏电感和超小的初级至次级电容,从而大大减少了通过偏置变压器注入的共模电流。升压前置稳压器旨在为 LLC 转换器提供 7.5W 功率,最高可支持 6W 输出功率。
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HVSSOP (DGN) 8 了解详情

订购与质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/FIT 估算
  • 材料成分
  • 认证摘要
  • 持续可靠性监测

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