BOM-DAT/Resistor-Dat/resistor-dat.md
... ...
@@ -7,6 +7,9 @@
7 7
8 8
- [[burden-resistor-dat]] - [[sample-resistor-dat]]
9 9
10
+- [[resistor-feedback-dat]]
11
+
12
+
10 13
11 14
Shunt Resistor:
12 15
... ...
@@ -57,6 +60,10 @@ C = 1K
57 60
58 61
- 30C = 20K
59 62
63
+
64
+
65
+
66
+
60 67
## ref
61 68
62 69
- [[BOM-dat]] - [[resistor]]
BOM-DAT/Resistor-Dat/resistor-feedback-dat/resistor-feedback-dat.md
... ...
@@ -0,0 +1,70 @@
1
+
2
+# resistor-feedback-dat
3
+
4
+
5
+## dcdc-bulk-output-dat
6
+
7
+
8
+when Vref = 0.6V
9
+
10
+Vout = Vref * (R2/R3+1)
11
+
12
+for 5V = 0.6V * (100K / ? + 1 )
13
+
14
+100K / R3 = 5V/0.6V - 1 = 7.3333
15
+100K / R3 = 5.2V/0.6V - 1 = 7.6666
16
+
17
+R3 = 13.633K or below 13.3K for 5.2V
18
+
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+
20
+| output | rough | Rbot | Rtop | Vref |
21
+| ------ | ----- | ----- | ---- | ---- |
22
+| 5V | 5.2V | 13.3K | 100K | 0.6V |
23
+| 4.35V | 4.35V | 16K | 100K | 0.6V |
24
+| 4.2V | 4.2V | 16.6K | 100K | 0.6V |
25
+| 4V | 3.93V | 18K | 100K | 0.6V |
26
+
27
+
28
+## FB = VBAT＝1.205×(1＋R1／R2)
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+
30
+电池端对应的的电压为： VBAT＝1.205×(1＋R1／R2)
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+
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+
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+
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+### parallel resistor
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+
36
+https://www.digikey.cn/zh/resources/conversion-calculators/conversion-calculator-parallel-and-series-resistor
37
+
38
+2x 1.88 MΩ in parallel ≈ 940 kΩ.
39
+
40
+1 MΩ and 15.67 MΩ in parallel ≈ 940 kΩ.
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+
42
+2 MΩ and 3.714 MΩ in parallel ≈ 1.3 MΩ.
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+
44
+3x 3.9 MΩ resistors in parallel = 1.3 MΩ
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+
46
+
47
+for - [[LFP-dat]]
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+
49
+ = 1.205 x ( 1 + 510k ∕ 100k) = 1.205 ⅹ 6.1 = 7.36V
50
+ = 1.205 x ( 1 + 800k ∕ 100k) = 1.205 ⅹ 9 = 10.845V
51
+ = 1.205 x ( 1 + 1000k ∕ 90k) = 1.205 ⅹ 12.11 = 14.6V
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+
53
+for - [[li-battery-dat]]
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+
55
+ = 8.4 / 1.205 - 1 = 5.97, R4 = 5.97 ⅹ R5, if R5 = 100k, R4 = 597k, use 590k
56
+ = 12.6 / 1.205 - 1 = 9.46, R4 = 9.46 ⅹ R5, if R5 = 100k, R4 = 946k, use 940k
57
+ = 16.8 / 1.205 - 1 = 12.93, R4 = 12.93 ⅹ R5, if R5 = 100k, R4 = 1293k, use 1.2M + 100k in series
58
+ = 25.2 / 1.205 - 1 = 19.9, R4 = 19.9 ⅹ R5, if R5 = 100k, R4 = 1990k, use 2M
59
+
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+
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+
62
+
63
+
64
+## ref
65
+
66
+- [[battery-pack-dat]]
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+
68
+- [[dcdc-down-dat]]
69
+
70
+- [[CN3305-dat]]
... ...
\ No newline at end of file
BOM-DAT/diode-dat/diode-dat.md
... ...
@@ -112,6 +112,16 @@ https://assets.nexperia.com/documents/data-sheet/BAV99S.pdf
112 112
- If both directions show 0V or both show “OL”, the diode is faulty.
113 113
114 114
115
+## Rectifier Diode
116
+
117
+### 肖特基二极管
118
+
119
+For lower power consumption and higher efficiency, the rectifier diode (D1 in Figure 1) should be a Schottky diode.
120
+
121
+- The breakdown voltage of the diode should be several volts higher than the output voltage (V<sub>BR</sub> > V<sub>OUT</sub>).
122
+- The current handling capability should be greater than the maximum output current (I<sub>F</sub> > I<sub>OUT,max</sub>).
123
+- The peak forward current should be greater than the peak current of the inductor (I<sub>FSM,peak</sub> > I<sub>L,peak</sub>).
124
+
115 125
116 126
117 127
## ref
Chip-cn-dat/CONSONANCE-dat/CN3302-dat/2025-08-19-18-54-09.png
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Binary files /dev/null and b/Chip-cn-dat/CONSONANCE-dat/CN3302-dat/2025-08-19-18-54-09.png differ
Chip-cn-dat/CONSONANCE-dat/CN3302-dat/CN3302-dat.md
... ...
@@ -25,6 +25,9 @@ The CN3302 is available in an 8-pin SOP8 package.
25 25
26 26
- [[AO4468-dat]] - [[mosfet-dat]]
27 27
28
+![](2025-08-19-18-54-09.png)
29
+
30
+
28 31
29 32
## ref
30 33
Chip-cn-dat/CONSONANCE-dat/CN3305-dat/2025-08-19-18-54-09.png
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Binary files a/Chip-cn-dat/CONSONANCE-dat/CN3305-dat/2025-08-19-18-54-09.png and /dev/null differ
Chip-cn-dat/CONSONANCE-dat/CN3305-dat/CN3305-dat.md
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@@ -1,7 +1,7 @@
1 1
2 2
# CN3305-dat
3 3
4
-![](2025-08-19-18-54-09.png)
4
+
5 5
6 6
- [[passive-BMS-dat]] - [[battery-pack-dat]] - [[battery-dat]]
7 7
... ...
@@ -9,19 +9,6 @@
9 9
10 10
- [[mosfet-dat]]
11 11
12
-## FB
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-
14
-VBAT = 1.205 ⅹ (1+R4∕R5)
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-
16
-for - [[LFP-dat]]
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-
18
- = 1.205 x ( 1 + 510k ∕ 100k) = 1.205 ⅹ 6.1 = 7.36V
19
- = 1.205 x ( 1 + 800k ∕ 100k) = 1.205 ⅹ 9 = 10.845V
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- = 1.205 x ( 1 + 1000k ∕ 90k) = 1.205 ⅹ 12.11 = 14.6V
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-
22
-for - [[li-battery-dat]]
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-
24
-
25 12
26 13
27 14
## SCH
... ...
@@ -36,4 +23,6 @@ for - [[li-battery-dat]]
36 23
37 24
## ref
38 25
26
+- [[resistor-dat]]
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+
39 28
- [[consonance-dat]]
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\ No newline at end of file
Chip-cn-dat/CONSONANCE-dat/CN3306-dat/2025-08-27-17-23-04.png
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Binary files /dev/null and b/Chip-cn-dat/CONSONANCE-dat/CN3306-dat/2025-08-27-17-23-04.png differ
Chip-cn-dat/CONSONANCE-dat/CN3306-dat/CN3306-dat.md
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@@ -0,0 +1,23 @@
1
+
2
+# CN3306-dat
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+
4
+- [[MPPT-dat]] - [[solar-dat]]
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+
6
+CN3306 is a current-mode, fixed-frequency PWM boost-type multi-battery charging management IC. The CN3306 features an input voltage range of 4.5V to 32V, requires few external components, and is simple and flexible to use. It can be applied to charging management for lithium batteries, lithium iron phosphate batteries, or lithium titanate batteries.
7
+
8
+Features:
9
+- PWM boost mode charging management
10
+- Input voltage range: 4.5V to 32V
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+- Adaptive charging current function
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+- Supports solar panel maximum power point tracking, can be powered by solar panels
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+- Switching frequency: 330kHz
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+
15
+![](2025-08-27-17-23-04.png)
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+
17
+- [[resistor-feedback-dat]]
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+
19
+## ref
20
+
21
+- [[diode-dat]] - [[DCDC-down-dat]] - [[resistor-feedback-dat]] - [[resistor-dat]]
22
+
23
+- [[consonance-dat]]
... ...
\ No newline at end of file
Chip-cn-dat/CONSONANCE-dat/CONSONANCE-dat.md
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@@ -5,24 +5,34 @@
5 5
6 6
7 7
8
-- [[CN3722-dat]] - 5A, Multi-Chemistry Battery Charger IC With Photovoltaic Cell MPPT Function - [[OPM1146-dat]]
9 8
10
-- [[CN3791-dat]] - 4A, Standalone Li-ion Battery Charger IC With Photovoltaic Cell MPPT Function - [[dse-cn3791.pdf]]
9
+## LED Driver
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+
11
+- [[CN5711-dat]]
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+
11 13
12
-- [[CN3125-dat]] - Linear SuperCapacitor Charger IC With Cell Balancing
14
+
15
+
16
+
17
+## battery management
13 18
14 19
- [[CN3302-dat]] - PFM Boost Dual-Cell Lithium Battery Charging Control IC
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16
-- [[CN3768-dat]] - 4A, 12V Lead-Acid Battery Charger IC - [[OPM1181-dat]]
21
+- [[CN3305-dat]]
17 22
18
-- [[BAT1002-dat]] - [[DSE-CN3065.pdf]]
23
+- [[CN3306-dat]] == Boost Multi-Chemistry Battery Charger IC With Photovoltaic Cell MPPT Function
24
+
25
+- [[CN3125-dat]] - Linear SuperCapacitor Charger IC With Cell Balancing
19 26
27
+- [[CN3705-dat]] == 5A, Multi-Chemistry Battery Charger
20 28
21
-- [[CN5711-dat]]
29
+- [[CN3722-dat]] - 5A, Multi-Chemistry Battery Charger IC With Photovoltaic Cell MPPT Function - [[OPM1146-dat]] - [[BQ24650-dat]] - [[TI-power-dat]]
22 30
23
-- CN3305
24
-- CN3705 == 5A, Multi-Chemistry Battery Charger
31
+- [[CN3791-dat]] - 4A, Standalone Li-ion Battery Charger IC With Photovoltaic Cell MPPT Function - [[dse-cn3791.pdf]]
32
+
33
+- [[CN3768-dat]] - 4A, 12V Lead-Acid Battery Charger IC - [[OPM1181-dat]]
25 34
35
+- [[BAT1002-dat]] - [[DSE-CN3065.pdf]]
26 36
27 37
28 38
Chip-dat/TI-dat/TI-Power-dat/TI-power-dat.md
... ...
@@ -17,6 +17,14 @@ DCDC降压芯片用Ti的TPS54335A，支持4.5V-28V宽电压输入。
17 17
18 18
![](2025-06-19-17-47-13.png)
19 19
20
+
21
+
22
+
23
+BQxx
24
+
25
+- [[BQ24650-dat]] == Standalone 1-6 cell Buck battery charge controller with solar input and integrated MPPT
26
+
27
+
20 28
## ref
21 29
22 30
- [[TI-dat]]
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\ No newline at end of file
power-dat/DC-dat/DCDC-dat/dcdc-down-dat/dcdc-down-dat.md
... ...
@@ -86,7 +86,7 @@ ME3116AM6G - 最高输入 40V 带载可达 1A 的 DC/DC 降压型稳压器 ME311
86 86
87 87
88 88
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-- [[dcdc-down-output-dat]]
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+- [[resistor-feedback-dat]]
90 90
91 91
92 92
## TP5450 plus MCP4017
power-dat/DC-dat/DCDC-dat/dcdc-down-dat/dcdc-down-output-dat.md
... ...
@@ -1,22 +0,0 @@
1
-
2
-# dcdc-bulk-output-dat
3
-
4
-
5
-when Vref = 0.6V
6
-
7
-Vout = Vref * (R2/R3+1)
8
-
9
-for 5V = 0.6V * (100K / ? + 1 )
10
-
11
-100K / R3 = 5V/0.6V - 1 = 7.3333
12
-100K / R3 = 5.2V/0.6V - 1 = 7.6666
13
-
14
-R3 = 13.633K or below 13.3K for 5.2V
15
-
16
-
17
-| output | rough | Rbot | Rtop | Vref |
18
-| ------ | ----- | ----- | ---- | ---- |
19
-| 5V | 5.2V | 13.3K | 100K | 0.6V |
20
-| 4.35V | 4.35V | 16K | 100K | 0.6V |
21
-| 4.2V | 4.2V | 16.6K | 100K | 0.6V |
22
-| 4V | 3.93V | 18K | 100K | 0.6V |
... ...
\ No newline at end of file
power-dat/battery-pack-dat/battery-pack-dat.md
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@@ -15,6 +15,9 @@
15 15
16 16
- battery isolation == rack (specially when have movement or vibration), Insulating Gasket
17 17
18
+- FB design - [[resistor-feedback-dat]]
19
+
20
+
18 21
19 22
## 🔋 Common Lithium Battery Pack Combinations
20 23
power-dat/solar-dat/MPPT-dat/MPPT-dat.md
... ...
@@ -0,0 +1,28 @@
1
+
2
+# MPPT-dat
3
+
4
+The MPPT pin is used for solar cell maximum power point tracking.
5
+
6
+When a solar panel is used as the input power source, the CN3306 adopts a constant voltage method to track the solar panel's maximum power point. On the solar panel's current-voltage characteristic curve, when the ambient temperature is constant, the output voltage corresponding to the maximum power point remains nearly the same under different sunlight intensities.
7
+
8
+That is, by keeping the output voltage of the solar panel at a constant value, the panel can output maximum power at that temperature regardless of light intensity.
9
+
10
+The voltage at the [[CN3306-dat]] MPPT pin for solar panel maximum power point tracking is regulated to 1.205V (typical). With two external resistors (R5 and R6 in Figure 1) forming a voltage divider network, the input voltage is regulated to track the solar panel's maximum power point.
11
+
12
+The solar panel maximum power point voltage is determined by the following formula:
13
+
14
+ Vmpp = 1.205 × (1 + R5 / R6)
15
+
16
+**if R6 == 100K and Vmpp == 18V, then R5 = 1.4M**
17
+
18
+
19
+MPPT pin for adaptive charging current
20
+
21
+The MPPT pin can also be used to automatically adjust the charging current to suit input power sources with limited load capacity. For example, when a weak adapter or USB port is used as the input power source, the MPPT pin and two external resistors (R5 and R6 in Figure 1) form a voltage divider network to regulate the input voltage to a value lower than the rated voltage VL (such as 4.75V). In this way, even if the set charging current exceeds the load capacity of the adapter or USB port, the CN3306 will automatically reduce the charging current to match the input power source. The VL voltage is set by the following formula:
22
+
23
+ Vl = 1.205 × (1 + R5 / R6)
24
+
25
+
26
+## ref
27
+
28
+- [[solar-dat]]
... ...
\ No newline at end of file
power-dat/solar-dat/solar-dat.md