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Wilson_Sun
Level 2
Level 2
Distributor - Avnet(GC)
25 sign-ins 5 questions asked 10 sign-ins

 

Hi Infineon team,

     我尝试使用TLE92464ED,在输出达到1A后自动关闭,外部阀是12 7.5mH,电压是16V,但是达不到1.2A,电流波形和反馈值见附件,谢谢!

CMD;Name;Address;Value

Write;GLOBAL_CONFIG;0x02;0x4004

Write;GLOBAL_DIAG0;0x03;0x000

Write;GLOBAL_DIAG1;0x04;0x000

Write;GLOBAL_DIAG2;0x05;0x000

Write;DIAG_ERR_CHGR0;0x0a;0x000

Write;DIAG_ERR_CHGR1;0x0b;0x000

Write;DIAG_WARN_CHGR0;0x10;0x000

Write;DIAG_WARN_CHGR1;0x11;0x000

//Enable Channel 0

Write;CH_CTRL;0x00;0x8007

//set Channel 0

Write;SETPOINT;0x40;0x4ccc

Write;MODE;0x4c;0x001

Write;DITHER_CLK_DIV;0x44;0x138a

Write;DITHER_STEP;0x45;0xfe00

Write;DITHER_CTRL;0x46;0x0002

 

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1 解答
Wilson_Sun
Level 2
Level 2
Distributor - Avnet(GC)
25 sign-ins 5 questions asked 10 sign-ins

Hi Xiangrui,

     用你们开发板不会这样,通过对比排查,发现是续流二极管问题,要选择肖特基二极管,因为普通二极管,结电容大,反向恢复时间比较大,在开关切换的时候额外叠加一个随输出电流变化的续流二极管回路的恢复电流,造成芯片OCP检测异常而提前保护,谢谢支持的!

在原帖中查看解决方案

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3 回复数
Xiangrui
Moderator
Moderator
Moderator
500 replies posted 250 solutions authored 50 likes received

Hi Wilson,

请问测试使用的是我们的评估板?

Regards,

Xiangrui

0 点赞
Wilson_Sun
Level 2
Level 2
Distributor - Avnet(GC)
25 sign-ins 5 questions asked 10 sign-ins

Hi Xiangrui,

     用你们开发板不会这样,通过对比排查,发现是续流二极管问题,要选择肖特基二极管,因为普通二极管,结电容大,反向恢复时间比较大,在开关切换的时候额外叠加一个随输出电流变化的续流二极管回路的恢复电流,造成芯片OCP检测异常而提前保护,谢谢支持的!

0 点赞
Xiangrui
Moderator
Moderator
Moderator
500 replies posted 250 solutions authored 50 likes received

Hi Wilson,

感谢回复

Regards,

Xiangrui

0 点赞