Published by Jinfan
What to bring to the review
- Exact battery, host and relevant charger revisions
- Confirmed requirements, proposed targets and unresolved questions kept separate
- A responsible owner and evidence location for each decision
6 operating states to define before charging a battery-powered appliance
Use a row with field number, requirement, responsible party, revision, evidence link and decision. Keep the original measurements or documents available to the authorized project team. Mark missing evidence as open; do not replace it with an estimated pass.
- 1. Input absent: record whether the host operates from the pack and its shutdown behavior.
- 2. Input connected, host off: identify charging control, termination and the status reported to the host.
- 3. Input connected, host active: record load priority and the input-current budget shared by the system and battery.
- 4. Input removed during operation: define the expected transition and the evidence needed to rule out a reset.
- 5. Battery depleted or unavailable: agree whether startup is supported, inhibited or still undefined.
- 6. Thermal or protection condition: identify who requests a stop and what permits recovery.
Use the record to make a scoped decision
Create a state-transition table with input state, pack state, host command, expected response, measured response and issue owner. Review connect and disconnect events separately from steady operation. If a state has no agreed owner or criterion, keep it open rather than treating a successful demonstration as acceptance.
Keep acceptance limits explicit
A power-path design example is not approval to operate every appliance while charging. Validate the actual charger, pack, firmware and load configuration.
Technical context and limits
TI compares charger and power-path arrangements and their operating behavior. Use this as technical background for architecture review, not as evidence that a particular appliance or Jinfan pack uses those devices.
TI: Implementations of Battery Charger and Power-Path Management