原标题：用于 36V 电动工具的具有 PFC 和 LLC 的 230V、400W 高效电池充电器

描述

此设计是一种专为广泛电池充电而设计的 400W 高效电池充电器电源，其充电的电池电压范围为 20V - 42V，非常适合无绳电动工具和园林工具中使用的 10 节锂离子电池组。此设计具有工作效率高达 96% 的升压 PFC 预稳压器级。它提供了大于 0.99 的高功率因数 (PF)，并根据 IEC61000-3-2 A 类标准满足 PFC 法规。主转换器级通过 LLC 配置实现，且其满载工作效率高达 96%。充电器设计的输入电压范围为 175V – 265V AC。此设计的外形 (230mm x 80mm) 为紧凑结构，功率级别为 400W。此设计在满载时的总体系统工作效率为 92%，且电压和电流调节均在+/- 3% 以内。电路前端的 EMI 滤波器旨在满足 EN55011 A 类传导发射水平。

特性

• 具有前端 PFC 和半桥 LLC 谐振转换器的 400W 电池充电器

• 专为广泛电池充电而设计，这些电池包括锂离子电池、锂聚合物电池、镍镉电池和铅酸电池，电压范围为 20V - 42V

• 适合为工业电动工具中使用的 10 节锂离子电池组充电

• 提供高达 9A 连续充电电流以实现电池快速充电

• 在充电电流为 9A 和输入为 230V 的满载状态下的总体效率为 92%，无需外部散热

• 大于 0.99 的高功率因素，根据 IEC 61000-3-2 A 标准满足 PFC 法规和电流 THD

• 不连接电池时的待机功耗极低 (< 200mW)

• 230 x 80 mm 的小巧 PCB 外形便于携带使用

• 通过附加的外部微控制器提供灵活的充电性能分析

• 充电器受保护，可防止输出端子出现过流和短路，确保符合安全需求

• 符合传导发射标准 EN55011 A 类的要求

TIDA-00355 Board

技术文档：

230-V 400-W 92% Efficiency Battery Charger With PFC and LLC Design Guide (PDF 2408 KB).pdf

主控器件

【TL103WA】

具有内部参考的双路运算放大器

描述

The TL103W and TL103WA combine the building blocks of a dual operational amplifier and a fixed voltage reference – both of which often are used in the control circuitry of both switch-mode and linear power supplies. OP AMP1 has its noninverting input internally tied to a fixed 2.5-V reference, while OP AMP2 is independent, with both inputs uncommitted.

For the A grade, especially tight voltage regulation can be achieved through low offset voltages for both operational amplifiers (typically 0.5 mV) and tight tolerances for the voltage reference (0.4% at 25°C and 0.8% over operating temperature range).

The TL103W and TL103WA are characterized for operation from –40°C to 105°C.

特性

Operational Amplifier

Low Offset Voltage Max of:

TL103WA…3 mV (25°C) and 5 mV (Full Temperature)

TL103W…4 mV (25°C) and 5 mV (Full Temperature)

Low Supply Current…350 µA/Channel (Typ)

Unity Gain Bandwidth…0.9 MHz (Typ)

Input Common-Mode Range Includes GND

Large Output-Voltage Swing… 0 V to VCC – 1.5 V

Wide Supply-Voltage Range…3 V to 32 V

2.5-kV ESD Protection (HBM)

Voltage Reference

Fixed 2.5-V Reference

Tight Tolerance Max of:

TL103WA…0.4% (25°C) and 0.8% (Full Temperature)

TL103W . . . 0.7% (25°C) and 1.4% (Full Temperature)

Low Temperature Drift…7 mV (Typ) Over Operating Temperature Range

Wide Sink-Current Range . . . 0.5 mA (Typ) to 100 mA

Output Impedance…0.2 Ω (Typ)

APPLICATIONS

Battery Chargers

Switch-Mode Power Supplies

Linear Voltage Regulation

Data-Acquisition Systems

【UCC25600】

8 引脚高性能谐振模式 LLC 控制器

描述

The UCC25600 high performance, resonant mode controller is designed for dc-to-dc applications using resonant topologies, especially the LLC half-bridge resonant converter. This highly integrated controller implements frequency modulation control and complete system functions in only an 8-pin package. Switching to the UCC25600 will greatly simplify the system design and layout, and improve time to market, all at a price point lower than competitive 16-pin device offerings.

The internal oscillator supports the switching frequencies from 40 kHz to 350 kHz. This high-accuracy oscillator realizes the minimum switching frequency limiting with 4% tolerance, allowing the designer to avoid over-design of the power stage and, thus, further reducing overall system cost. The programmable dead time enables zero-voltage switching with minimum magnetizing current. This maximizes system efficiency across a variety of applications. The programmable soft-start timer maximizes design flexibility demanded by the varied requirements of end equipment using a half-bridge topology. By incorporating a 0.4-A source and 0.8-A sink driving capability, a low cost, reliable gate driver transformer is a real option.

The UCC25600 delivers complete system protection functions including overcurrent, UVLO, bias supply OVP, and overtemperature protection.

特性

Variable Switching Frequency Control

Programmable Minimum Switching Frequency

With 4% Accuracy (3% Accuracy at Temperature

Range: –20°C to 105°C)

Programmable Maximum Switching Frequency

Programmable Dead Time for Best Efficiency

Programmable Soft-Start Time

Easy ON and OFF Control

Overcurrent Protection

Overtemperature Protection

Bias Voltage UVLO and Overvoltage Protection

Integrated Gate Driver With 0.4-A Source and 0.8-

A Sink Capability

Operating Temperature Range: –40°C to 125°C

SOIC 8-Pin Package