Bug #111255
【Figure】【EVT】【PI】VBAT动态响应测试值超规格要求
| Status: | CLOSED | Start date: | 2022-08-15 | |
|---|---|---|---|---|
| Priority: | High | Due date: | ||
| Assignee: | 项目部_SD3 赵云 | % Done: | 100% | |
| Category: | EE | |||
| Target version: | - | |||
| Need_Info: | -- | Found Version: | V01 | |
| Resolution: | -- | Degrated: | -- | |
| Severity: | Major | Verified Version: | ||
| Reproducibility: | Every time | Fixed Version: | ||
| Test Type: | IOT | Root cause: |
Description
VBAT在动态拉载中测试值为561.3mV，测试标准是＜420mV。
测试步骤：最大电流值6A；设置动态拉载电流范围10-100%，拉载电流斜率0.1A/us，上升时间0.5ms，下降时间0.5ms
History
#1 Updated by SZ-硬件二组_SD3 王苗 almost 3 years ago
- Assignee changed from SZ-硬件二组_SD3 王苗 to 项目部_SD3 赵云
修改电容C117为47pf，C118和C119为47uf，600mA拉载到6A 复测峰峰值已经是芯片规格参数。请复测验证，同时拉载也无需拉载到6A.设计有余量，5A已经足够。同时如果复测电源效率，请NC R12533电阻，也同时解决电感发热问题。
#2 Updated by 项目部_SD3 赵云 almost 3 years ago
- File VBAT-rippe-5000a-max.jpg added
- File VBAT-4500ma-transient.jpg added
- Status changed from New to RESOLVED
- % Done changed from 0 to 100
按研发建议拉载4.5A测试，动态响应符合标准，纹波噪声，电压幅值正常，去掉R12533电阻待机状态下电感温度正常。
#3 Updated by 项目部_SD3 赵云 almost 3 years ago
- Status changed from RESOLVED to VERIFIED
#4 Updated by 项目部_SD3 赵云 almost 3 years ago
- Status changed from VERIFIED to CLOSED
按研发建议拉载4.5A测试，动态响应符合标准，纹波噪声，电压幅值正常，去掉R12533电阻待机状态下电感常温下没有出现发烫现象。
#5 Updated by CD TPM-申艳艳 almost 3 years ago
- Category set to EE