电源管理论坛 - 最近的话题

LM2940-N: Aging test shows chip abnormality

Reed — Thu, 06 Aug 2026 16:20:57 GMT

Part Number: LM2940-N

Hi Team,

USE LM2940IMP-15/NOPB. Aging test shows chip abnormality,

An old design used 5 LM2940 chips on one board. Recently, it was found that the defect rate was increasing during aging testing at a temperature of 50 degrees Celsius, and this was more evident in a certain batch of products. Here is the schematic diagram, please help analyze the reason. (The chip is physically burned out, with a defect rate of 0.6%).

LM5012: LM5012DDAR Heat Dissipation pad oxidation and dirty, need check the reason and if it affect performance.

wilson Zhang — Thu, 06 Aug 2026 11:22:54 GMT

Part Number: LM5012

BQ24610: BQ24610RGER充电终止电流问题

QI LI — Wed, 05 Aug 2026 10:58:54 GMT

Part Number: BQ24610

请问BQ24610RGER可设置的最小充电终止电流（恒压充电时结束充电的触发电流值）是多少，是否可以设置到100mA，我们选型的电池恒流充电电流设置是2A

RE: BQ24610: BQ24610RGER充电终止电流问题

Alice — Thu, 06 Aug 2026 08:32:14 GMT

您好，

根据数据手册 “9.3.5 Charge Termination, Recharge, and Safety Timer” ，最小终止电流会随着取样电阻变化。

但需要注意的是，更大的电阻会产生更高的导通损耗，进而影响Termination current精度。

RE: BQ25601: BQ25601 as a slave charger, the reading of the charging current is abnormal

b cc — Thu, 06 Aug 2026 08:17:14 GMT

hardware:

BQ25601: BQ25601 as a slave charger, the reading of the charging current is abnormal

b cc — Thu, 06 Aug 2026 06:06:46 GMT

Part Number: BQ25601

system version: kernel 5.4

master charger:rt9471

slave charger:bq25601

rt9471 is good status.

ibus setted software rt9471 and bq25601 each is 1650mA

ibat setted software rt9471 and bq25601 each is 2750mA

For test result,at charging mode,usb charger adapt is 8.8V 3.0A. Battery is 3.8V 4.8A.

Now,bq25601 register :

bq2560x_dump_register: [REG_0x00]=0x05 [REG_0x01]=0x18 [REG_0x02]=0x2d [REG_0x03]=0x00 [REG_0x04]=0x90 [REG_0x05]=0x00 [REG_0x06]=0x84 [REG_0x07]=0x10 [REG_0x08]=0x00 [REG_0x09]=0x00 [REG_0x0a]=0x00 [REG_0x0b]=0x00

0x0A is 0x00, 0x00 is 0x05 .

These all do not match the actual test results, but I don't know where the problem lies, although charging is now possible.

TPS5430: TPS5430输出负压-15V，实测只有-5V

haidong qiu — Thu, 06 Aug 2026 08:02:23 GMT

Part Number: TPS5430

RE: TPS5430: TPS5430输出负压-15V，实测只有-5V

Eirwen — Thu, 06 Aug 2026 08:05:28 GMT

已经收到了您的案例，调查需要些时间，感谢您的耐心等待。

RE: BQ79616EVM-021: Subject: Request for BQ79616EVM-021 Altium Schematic, PCB Layout, and Source Code

Lydia — Thu, 06 Aug 2026 07:58:56 GMT

您好，

请您注意以下几点，

1，尽量避免使用校园网等有限制的网络环境，

2，填写个人信息尽量完整包含物流地址等，

3，选择非军用

如果还不能申请，请请联系客户支持中心，会有客服帮助您，

https://www.ti.com.cn/zh-cn/info/customer-support.html

BQ79616EVM-021: Subject: Request for BQ79616EVM-021 Altium Schematic, PCB Layout, and Source Code

yuanxing zhang — Thu, 06 Aug 2026 05:56:29 GMT

Part Number: BQ79616EVM-021

Dear Support Team,

I am a development engineer from FLOC Company. My TI account email is zyxbellaa@gmail.com.

Our company is currently preparing to develop a BMS (Battery Management System) control board. I have submitted a request to access the Altium schematic, PCB layout, and source code for the BQ79616EVM-021 evaluation module. However, my request was denied. The relevant information and screenshots of my account details are attached for your reference.

Could you please help analyze the reason for the rejection and advise on how I can resolve this issue to gain access to the required design files?

Thank you for your time and assistance. I look forward to your reply.

Best regards,
Flowc (flwc)
FLOC Company
TI Account: zyxbellaa@gmail.com

UCC28950: 工作表取消保护

n y — Thu, 06 Aug 2026 01:57:18 GMT

Part Number: UCC28950

ucc28950的 SLUC222.excel 文件中关于电压补偿的计算公式与手册中不符，如何取消工作表保护密码进行更改

RE: UCC28950: 工作表取消保护

Links — Thu, 06 Aug 2026 07:12:41 GMT

Hello,

Kindly refer to the following link and email to our Application Engineer

(+) UCC28950: UCC2895x Excel Design Tool unlock sheets - Power management forum - Power management - TI E2E support forums

RE: BQ25601: BQ25601 as a slave charger, the reading of the charging current is abnormal

Alice — Thu, 06 Aug 2026 06:18:57 GMT

Hello,
We have received your post and the investigation will take some time.
Thanks for your patience.

BQ79616EVM-021: Subject: Request for BQ79616EVM-021 Altium Schematic, PCB Layout, and Source Code

yuanxing zhang — Thu, 06 Aug 2026 05:55:18 GMT

Part Number: BQ79616EVM-021

Dear Support Team,

I am a development engineer from FLOC Company. My TI account email is zyxbellaa@gmail.com.

Could you please help analyze the reason for the rejection and advise on how I can resolve this issue to gain access to the required design files?

Thank you for your time and assistance. I look forward to your reply.

Best regards,
Flowc (flwc)
FLOC Company
TI Account: zyxbellaa@gmail.com

RE: BQ79616EVM-021: Subject: Request for BQ79616EVM-021 Altium Schematic, PCB Layout, and Source Code

Eirwen — Thu, 06 Aug 2026 06:10:10 GMT

已经收到了您的案例，调查需要些时间，感谢您的耐心等待。

RE: BQ79616EVM-021: Subject: Request for BQ79616EVM-021 Altium Schematic, PCB Layout, and Source Code

Lydia — Thu, 06 Aug 2026 05:58:43 GMT

您好，已经收到了您的案例，调查需要些时间，感谢您的耐心等待。

RE: LM5122: LM5122 12V-48V@2.5A高性能方案

FRANK1 — Thu, 06 Aug 2026 03:28:29 GMT

从LM5122的datasheet看，输入输出电压是满足你的设计要求的。

output输出48V/2.5A, 也支持48V系统。（12V、24V和48V电源系统）

switch frequency最高1MHz。

满载>91%,也没问题，该芯片的评估板满载效率95%以上。

所以上面设计参数均能满足你的要求。

重点是瞬态响应， LM5122是峰值电流模式控制，瞬态性能依赖环路补偿和输出电容，所以这需要你根据设计实际测量验证下。

LM5122: LM5122 12V-48V@2.5A高性能方案

qianqian liu — Wed, 05 Aug 2026 06:51:47 GMT

Part Number: LM5122

您好！

我们正在开发 4 路 PoE 交换机产品，现将升压电路完整设计需求陈列如下，请您帮忙评估 TI LM5122 是否可以满足下述全部设计指标。

一、电路整体设计需求

1. 功率架构

前级采用 Boost 升压电路，输出 48V 母线，后端驱动 4 路 IEEE802.3at PoE+ PSE 通道；单路 PSE 满载 30W，四路同时满载总功率 120W，短时峰值功率 144W。

2. 输入输出规格

标称输入电压：12V DC

输入电压范围：9~16V DC

输出标称电压：48V DC，输出精度 ±2%

额定输出电流：2.5A，峰值输出电流：3A

3. 性能指标

效率：满载≥91%、半载≥93%、轻载≥90%

输出纹波：≤1%

负载特性：PSE 端口插拔、负载快速跳变时母线电压波动小，瞬态电压偏差≤±4%

二、芯片说明

我方考察器件为LM5122 ，项目目标开关频率 250kHz。

BQ25798: 通信时出现报错，电流达不到5A

HUANYAO ZHAO — Tue, 28 Jul 2026 03:17:36 GMT

Part Number: BQ25798

1、I2C问题：I2C通讯时常会出现报错，通讯失败；

2、充电电流问题：充电电流达不到5A，且到达3A多后，充电电流会降下来；

3、VINDPM问题：默认设置输入电压限制阈值过低，更改寄存器设置电压后，每次插拔后又重新恢复为默认值了，如何解决？

RE: BQ25798: 通信时出现报错，电流达不到5A

HUANYAO ZHAO — Thu, 06 Aug 2026 02:56:11 GMT

BQ25798在新产品中出现充不了电的情况

RE: BQ25798: 通信时出现报错，电流达不到5A

HUANYAO ZHAO — Thu, 06 Aug 2026 02:54:00 GMT

BQ25798在新产品中出现充不了电的情况

RE: UCC28950: 工作表取消保护

Links — Thu, 06 Aug 2026 02:40:22 GMT

您好，

已经收到了您的案例，调查需要些时间，感谢您的耐心等待。

UCC28950: 工作表取消保护

n y — Thu, 06 Aug 2026 01:58:35 GMT

Part Number: UCC28950

ucc28950的 SLUC222.excel 文件中关于电压补偿的计算公式与手册中不符，如何取消工作表保护密码进行更改

RE: UCC28950: 工作表取消保护

FRANK1 — Thu, 06 Aug 2026 02:06:56 GMT

感谢您对TI产品的关注！
关于你的咨询，我们正在确认您的问题，感谢您的耐心等待。

TIDA-011012: TIDA-011012: Request for Reference Firmware / Software Source Code

yu yang — Mon, 03 Aug 2026 08:59:51 GMT

Part Number: TIDA-011012

Hi TI Team,

I am currently evaluating the TIDA-011012 reference design (50kW SiC-based Modular Solid-State Transformer).

I checked the design files on the TI website and found schematics, BOM, and Gerber files, but I couldn't find the firmware/software source code for the main controller (TMS320F28P650DK).

Could you please let me know:
1. Is there an official reference firmware or example source code available for TIDA-011012?
2. If available, how or where can I download the source code/CCS project?
3. If not publicly available, are there any base C2000 controlSUITE/C2000Ware example projects recommended as a starting point for this topology?

Thank you for your support!

电源管理论坛 - 最近的话题

LM2940-N: Aging test shows chip abnormality

LM5012: LM5012DDAR Heat Dissipation pad oxidation and dirty, need check the reason and if it affect performance.

BQ24610: BQ24610RGER充电终止电流问题

RE: BQ24610: BQ24610RGER充电终止电流问题

RE: BQ25601: BQ25601 as a slave charger, the reading of the charging current is abnormal

BQ25601: BQ25601 as a slave charger, the reading of the charging current is abnormal

TPS5430: TPS5430输出负压-15V，实测只有-5V

RE: TPS5430: TPS5430输出负压-15V，实测只有-5V

RE: BQ79616EVM-021: Subject: Request for BQ79616EVM-021 Altium Schematic, PCB Layout, and Source Code

BQ79616EVM-021: Subject: Request for BQ79616EVM-021 Altium Schematic, PCB Layout, and Source Code

UCC28950: 工作表取消保护

RE: UCC28950: 工作表取消保护

RE: BQ25601: BQ25601 as a slave charger, the reading of the charging current is abnormal

BQ79616EVM-021: Subject: Request for BQ79616EVM-021 Altium Schematic, PCB Layout, and Source Code

RE: BQ79616EVM-021: Subject: Request for BQ79616EVM-021 Altium Schematic, PCB Layout, and Source Code

RE: BQ79616EVM-021: Subject: Request for BQ79616EVM-021 Altium Schematic, PCB Layout, and Source Code

RE: LM5122: LM5122 12V-48V@2.5A高性能方案

LM5122: LM5122 12V-48V@2.5A高性能方案

一、电路整体设计需求

二、芯片说明

BQ25798: 通信时出现报错， 电流达不到5A

RE: BQ25798: 通信时出现报错， 电流达不到5A

RE: BQ25798: 通信时出现报错， 电流达不到5A

RE: UCC28950: 工作表取消保护

UCC28950: 工作表取消保护

RE: UCC28950: 工作表取消保护

TIDA-011012: TIDA-011012: Request for Reference Firmware / Software Source Code

BQ25798: 通信时出现报错，电流达不到5A

RE: BQ25798: 通信时出现报错，电流达不到5A

RE: BQ25798: 通信时出现报错，电流达不到5A