TEC 温控模块设计
Worked
已继续完成PCB：70×90mm 2层板、元件布局、自动布线、关键DRC检查清空，并补齐通用阻容MPN后导出了制造文件。下单前建议用Gerber查看器快速确认DC圆孔座脚位/孔位和端子方向。
制造文件：
- 12v-tec-phone-cooler-gerbers.zip
- https://cdn2.flux.ai/flux-comment-files/files/commentFileId-089b3db5f30da799dd7f6c24d41fb6bb4896490b3ad45d8694402dc71f67f08e.csv?GoogleAccessId=autopilot-sa-d60c62b%40graviton-mvp.iam.gserviceaccount.com&Expires=4937919592&Signature=dVrscJ5m1rJL1W4Z5k6lXS1lX8wh%2BsXk73mfQ3lBE%2F%2FVWk5igM54WPuRFzR9LNeLZ%2BN1ECvKjXPT2UuZcxkkp3FPtrKZ%2BStVPagQxImRr72al6QFwW09i5ufSx33m5WLyU%2FDg2eG6%2FwNqK3B7x%2BxWpNgS4QEeXWAUs8ZC924nboTzVvpPVsmwd0Gdz7X3M3ObV26wvWJAgxgJLysN%2BaLurVRaKHzpQVQeMBoE%2FfX08MfKGzvUzmVJgogftHVQmR3hFcHBLaDb%2Bl5lxRwH6579yVkTrggMDYS%2FEdh9qmOtQQI8Ubp9uWuL00PVj7Uy8V%2BzQkbSXb7RZKGn4%2FubVH%2BqA%3D%3D
- https://cdn2.flux.ai/flux-comment-files/files/commentFileId-0505305971d8ace450fb0e0b8391f535441fc2993a147d5f494029fb58afbe6f.csv?GoogleAccessId=autopilot-sa-d60c62b%40graviton-mvp.iam.gserviceaccount.com&Expires=4937919592&Signature=Nzl%2FAElH4%2FwO6l9SdxCkiTNiaf75loDd%2FEH%2FF5XpSvSC6dvShEKSqUCYLRRvRCbUp3Nkp9rapKgzoup263B0l0FiDxgWKOYHN%2BA1bY8CEQDAHHt19lbUkeqe1A2ZjAKTP1QXPP2Oe42rWwu%2BCLrrX%2BEEoJJHbEqdeT2Rt7gNpC4h9DP0Ac2SNTsjABZv1EUtRbU9dyTJTObHUbhCWWAv13B00%2Fyqzc%2BlWmfBAuG8DG9uAvuEgv7DnE6Z4au%2FbpMAO%2F73nm1HFqH4Oig0jnuiV9GvgGXY2e8x6oDI2se7oytlS7sISStyTZ0DROt%2BcMz%2B7Qmv36tOxXXEDLdJwO0fnQ%3D%3D
3D Model (STEP)
Failed to load 3D model
开放项：
- 外接TEC/风扇和NTC探头不在板上，需要按12V、总电流≤约5A购买。
- 第一次上电请按Board Bring-Up Plan限流测试。
建议下一步：
- 上传Gerber到JLCPCB/PCBWay预览。
- 核对BOM和贴片方向。
- 买12V 5A电源、12V TEC+风扇套件、10k B3950 NTC探头。
- 板到手后按测试计划逐步上电。
1、dc圆孔输入头方向不正确，被部分元器件阻挡，请旋转。2、板材面积太大了，请缩小到合适体积。
Thought
我会调整PCB：先检查当前布局尺寸和DC座位置，再缩小板框并重新放置/旋转输入区域，确保DC圆孔不被遮挡。
Thought
当前无法继续执行修改：你的账户当前没有可用 ACUs，AI执行功能暂时不可用。
本次已开始处理你的新要求：
- 已确认要调整两项：旋转/重新放置DC圆孔输入座、缩小PCB板框。
- 已建立待办计划，但还没能实际读取/修改PCB布局。
剩余工作：
- 检查当前DC圆孔座的方向和被遮挡位置。
- 将板框从当前约70×90mm缩小到更合适尺寸。
- 旋转并移动DC输入座，重新安排F1、D1、C1等输入保护元件。
- 重新布线/修正空气线。
- 重新跑DRC，确认无关键错误。
检查DC座间距
设定板框尺寸
优化输入区域
手动修改步骤
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Ask about this doc
Board Bring-Up Plan — 12V TEC Phone Cooler
Prerequisites
- Equipment: multimeter, current-limited 12V bench supply or 12V adapter with inline current meter, thermometer/heat source, optional oscilloscope.
- Loads: 12V TEC module on J2, 12V fan on J3, 10k B3950 NTC probe on J4.
- Safety: start without TEC/fan connected; limit current during first power-up. TEC/fan combined current should stay within the board target of about 5A unless layout is re-rated.
1. Visual Inspection
- Verify J1, J2, J3, J4 connector orientation and polarity labels.
- Check D1 TVS, D2 Schottky, D3 LED, C1 electrolytic capacitor, U1 LM393, and Q1 MOSFET orientation.
- Inspect high-current solder joints at J1/J2/J3/F1/Q1.
2. Power Rail Verification
Table
| Rail | Source | Expected Voltage | Tolerance | Measure At | Current Limit | Pass Criteria |
|---|---|---|---|---|---|---|
| VIN_RAW | J1 through barrel input | 12V | adapter tolerance | F1 pin 1 | 100mA no-load first test | No short to GND before power; voltage present after power |
| 12V_PROT | F1 output | 12V | adapter tolerance minus small fuse drop | F1 pin 2 / C1+ / J2 PIN1 | 100mA no-load first test | Matches input closely with no load |
| GND | J1 sleeve / common return | 0V | n/a | J1 GND / Q1 source | n/a | Continuity between all GND points |
Procedure:
- With power off, measure resistance from VIN_RAW and 12V_PROT to GND; confirm no short.
- Power at 12V with 100mA current limit and no TEC/fan attached.
- Verify 12V_PROT at C1+ and J2/J3 PIN1.
- Increase current limit only after no-load behavior is correct.
3. Critical Signal Verification
Table
| Signal | Net Name | Expected State | Measure At | Notes |
|---|---|---|---|---|
| Thermistor divider | TEMP_SENSE | About 6V at 25°C with 10k NTC | J4 P1 / U1 INPUTSA_1 | Falls as temperature rises |
| Comparator reference | VREF | About 4.09V when output low, about 4.69V when output high | U1 INPUTSA_2 | Hysteresis reference |
| Comparator output | COMP_OUT | Low when cold, high/pulled to 12V when hot | U1 OUTPUTA / R7 P1 | LM393 open collector with R5 pull-up |
| MOSFET gate | GATE_DRV | Near 0V off, several volts high when on | Q1 G | Drives low-side switch |
| Switched return | LOAD_SW | Near 12V when off through load, near 0V when on | J2 PIN2/J3 PIN2 | Requires connected load to observe off-state pull-up |
4. Connector and Interface Tests
Table
| Connector | Type | Pins to Verify | Test Method |
|---|---|---|---|
| J1 | 5.5/2.1mm DC input | Center positive to F1, sleeve to GND | Continuity and polarity check before applying power |
| J2 | TEC output screw terminal | PIN1=12V_PROT, PIN2=LOAD_SW | Measure voltage across TEC when hot |
| J3 | Fan output screw terminal | PIN1=12V_PROT, PIN2=LOAD_SW | Fan should run when hot |
| J4 | NTC connector | P1=TEMP_SENSE, P2=GND | Plug 10k B3950 NTC probe |
5. Programming and Debug Interface
No programming interface is required; this is an analog comparator design with no MCU.
6. Functional Validation
Table
| Test | Components Involved | Input | Expected Output | Pass Criteria |
|---|---|---|---|---|
| Cold off test | RT1/J4, U1, Q1 | NTC near room temperature | TEC/fan off, D3 off | COMP_OUT low, GATE_DRV near 0V |
| Heat on test | RT1/J4, U1, Q1, J2/J3 | Heat NTC above about 40.6°C | TEC/fan on, D3 on | LOAD_SW pulled low, load receives about 12V |
| Cool hysteresis test | RT1/J4, U1 | Let NTC cool | Output remains on until about 35.3°C | No rapid chatter around 40°C |
| Open sensor fail-safe | J4 open | Disconnect NTC | Output off | TEMP_SENSE pulled high, GATE_DRV near 0V |
7. Expected Measurements Reference
Table
| Measurement | Location | Expected Value | Tolerance | Instrument |
|---|---|---|---|---|
| No-load input current | 12V supply | <20mA excluding LED/load | approximate | Bench supply/current meter |
| TEMP_SENSE at 25°C | J4 P1 | ~6.0V | depends on NTC tolerance | Multimeter |
| TEMP_SENSE at 40°C | J4 P1 | ~4.16V | depends on NTC tolerance | Multimeter |
| VREF off-state | U1 INPUTSA_2 | ~4.09V | resistor tolerance | Multimeter |
| VREF on-state | U1 INPUTSA_2 | ~4.69V | resistor tolerance | Multimeter |
| TEC/fan output on | J2/J3 across pins | ~12V | adapter/load dependent | Multimeter |
Pass/Fail Summary
Table
| Test Section | Result | Notes |
|---|---|---|
| Visual Inspection | [ ] Pass / [ ] Fail | |
| Power Rails | [ ] Pass / [ ] Fail | |
| Critical Signals | [ ] Pass / [ ] Fail | |
| Connectors | [ ] Pass / [ ] Fail | |
| Programming | N/A | No MCU |
| Functional Validation | [ ] Pass / [ ] Fail |
Board Status: [ ] Ready for deployment / [ ] Requires rework
Prerequisites
1. Visual Inspection
2. Power Rail Verification
3. Critical Signal Verification
4. Connector and Interface Tests
5. Programming and Debug Interface
6. Functional Validation
7. Expected Measurements Reference
Pass/Fail Summary
