Other Parts Discussed in Thread: BQ79616, BQ79600-Q1
Hello David,
I was unable to reply previous tag as it was somehow blocked.
Please see the below part of schematics and new changes made and sleep current measurement done.
Sleep mode current measurement at different test conditions.xlsx
Different test cases was made to verify sleep mode current values written in.the BQ79616-Q1 datasheet.
| Test Case 1 | |||||
| Mode | Parameter | Enable/Disable | Current Consumption | Unit | Remarks |
| Sleep mode | UV/OV/OT/UT Protector | Disabled | Ok as per data sheet | ||
| Fault Mask | |||||
| Tsref | |||||
| CVDD LDO and RTC | Removed | ||||
| LDO IN current | 113 | micro Amp | |||
| BAT current | 26 | micro Amp | |||
| Total | 139 | micro Amp | |||
| Test Case 2 | |||||
| Sleep mode | UV/OV/OT/UT Protector | Disabled | Ok as per data sheet | ||
| Fault Mask | |||||
| Tsref | Enabled | ||||
| CVDD LDO and RTC | Removed | ||||
| LDO IN current | 416 | micro Amp | |||
| BAT current | 26 | micro Amp | |||
| Total | 442 | micro Amp | |||
| Test Case 3 | |||||
| Sleep mode | UV/OV/OT/UT Protector | Disabled | 0 | 0 | Ok as per data sheet |
| Fault Mask | Enabled | Micro Amp | |||
| Tsref | |||||
| CVDD LDO and RTC | Removed | ||||
| LDO IN current | 416 | micro Amp | |||
| BAT current | 26 | micro Amp | |||
| Total | 442 | micro Amp | |||
| Test Case 4 | |||||
| Sleep mode | UV/OV/OT/UT Protector | Enabled | with Protector ON 146 micro Amp current increased in the LDOIN pin and 70 micro Amp currrent increased in BAT pin | ||
| Fault Mask | Enabled | Micro Amp | |||
| Tsref | |||||
| CVDD LDO and RTC | Removed | 0 | |||
| LDO IN current | 560 | micro Amp | |||
| BAT current | 103 | micro Amp | |||
| Total | 663 | micro Amp | |||
in the above test case no 4 when protector enabled then 146 micro amps current increased in the LDOIN pin and 70 micro amps current increased at BAT pin.
and this current increase is not given in the datasheet. please justify this current increased.
thanks and regards
Subhash Dhyani
