1. 产品简介/Product introduction

DA22KM20A 是一款双向 OBC 开关电源变换器，采用先进的全数字谐振调频技术， 效率高。与同类产品相比，更加节能、体积小、工作可靠。充电方式采用自有专利技术，恒 压、恒流、恒功率状态自动转换充电方法，有效节省充电时间；具有有源功率因数校正功能， 对电网低污染；输入和输出电压范围宽；采用 CAN2.0B 通信协议；具有智能充电功能、智能 监测故障告警保护功能、烧写、故障查询等功能；具有 12V/5A 电池管理系统唤醒信号辅助 电源（可选）。具有与充电桩连接的控制导引功能（可选）（兼容 GB/T18487.1_2015、 IEC61851.1_2017 与 SAE J1772_2017）等。

该款电源专为新能源汽车高压电池充电而设计，与国际一流汽车电源厂商完全同步，各

项性能指标已达到或超越国际同行水平，无故障运行时间更长。该系列电源也可适用于需要

恒压、恒流、恒功率充电的各个领域。

DA22KM16 is an Bi-directional OBC switching power supply converter. The charger 

adopts advanced all-digital resonant frequency modulation technology, which has high efficiency, 

high power, small size and reliable operation. The charging mode adopts constant power ,constant 

voltage and constant current automatic state transition, which effectively saves charging time. 

With active power factor correction, zero pollution to the grid, wide input and output voltage 

range, using CAN2.0B communication protocol. With intelligent charging function, it has intelligent 

monitoring fault alarm protection function, program me function and fault inquiry function. it also 

has built-in 12V/5A independent auxiliary power supply for power supply of car battery 

management system(compatibility GB/T18487.1_2015、 SAE J1772_2017 and SAE J1772_2017).

This power supply is specially designed for charging high-voltage batteries of new energy vehicles. 

which is completely synchronized with the world-class automobile power supply manufacturers. 

The performance indicators have reached or exceeded the international peer level, and the 

fault-free running time is longer.

·   双向转换;

· Bidirectional conversion 

·  采用PWM隔离变换器电路

· Adopting PWM isolated converter circuit

·  DSP数字化控制。

 · DSP digital control

保护功能/Protection function

输出过流保护/Output Over Current Protection

输出短路保护/Output Short Circuit Protection

输出过压保护/Output over Voltage Protection

输出欠压保护/Output under Voltage Protection

输入过压保护/Input over Voltage Protection

输入欠压保护/Input under Voltage Protection

CAN通信故障/CAN Communication Fault

连续 5s 未收到 BMS 或 VCU 指令No BMS or VCU command received for 5s consecutively 

OBC 立刻停止工作并上报 CAN 通信故障； 

OBC immediately stops working and reports CAN  communication failure. 

CAN 总线恢复且稳定，响应工作指令 

CAN bus is restored and stable, responding to  work orders