diff --git a/hardware/solar-breakout/Parts.md b/hardware/solar-breakout/Parts.md index 7cfc5cb..207ac6d 100644 --- a/hardware/solar-breakout/Parts.md +++ b/hardware/solar-breakout/Parts.md @@ -7,7 +7,7 @@ | Part | Description | Supplier | Quantity Required | Notes | --- | --- | --- | --- | --- |SPV1040T|Voltage Regulators - Switching Regulators Hi efficiency solar battery charger|[511-SPV1040T](http://uk.mouser.com/Search/Refine.aspx?N=1323043&Keyword=511-SPV1040T)|1|U1 MPPT SPV1040T -|LTC4070EMS8E#PBF|LINEAR TECHNOLOGY - BATTERY CHARGER, LIION/POLY, 8MSOP|[1839141](http://uk.farnell.com/webapp/wcs/stores/servlet/Search?st=1839141)|1|U2 Li-ion battery charger LTC4070 - replaces LTC4071, leave pin 7 floating +|LTC4070EMS8E#PBF|LINEAR TECHNOLOGY - BATTERY CHARGER, LIION/POLY, 8MSOP|[1839141](http://uk.farnell.com/webapp/wcs/stores/servlet/Search?st=1839141)|1|U2 Li-ion battery charger LTC4070 |TPS62243DRVT|TEXAS INSTRUMENTS - DC-DC CONV, BUCK, 0.3A, 2.25MHZ, SON-6|[2400648](http://uk.farnell.com/webapp/wcs/stores/servlet/Search?st=2400648) [595-TPS62243DRVT](http://uk.mouser.com/Search/Refine.aspx?N=1323043&Keyword=595-TPS62243DRVT)|1|U3 Buck Converter DRVT = SON-6 TPS62243 |PTVS5V0S1UR|NXP - Transient Voltage Suppressor, TVS, AEC-Q101 PTVS Series, Unidirectional, 5 V, SOD-123, 2, 6.4 V|[1829262](http://uk.farnell.com/webapp/wcs/stores/servlet/Search?st=1829262)|1|TVS diode for MPPT D1 |RB161M-20TR|ROHM - Small Signal Schottky Diode, Single, 25 V, 1 A, 350 mV, 30 A, 125 °C|[1525484](http://uk.farnell.com/webapp/wcs/stores/servlet/Search?st=1525484)|1|Small signal schottky RB161M D2 @@ -19,7 +19,8 @@ |LPS3015-103MRB|COILCRAFT - Surface Mount Power Inductor, AEC-Q200 LPS3015 Series, 10 µH, ± 20%, Shielded, 0.44 ohm, 550 mA|[2408024](http://uk.farnell.com/webapp/wcs/stores/servlet/Search?st=2408024)|1|L1 Lx for MPPT LPS3015 |SRN2512-2R2M|BOURNS - Surface Mount Power Inductor, SRN2512 Series, 2.2 µH, ± 20%, Semishielded, 0.102 ohm, 2.3 A|[2428203](http://uk.farnell.com/webapp/wcs/stores/servlet/Search?st=2428203)|1|Inductor for Buck L2 |MC0402B102J500CT|MULTICOMP - SMD Multilayer Ceramic Capacitor, MC Series, 1000 pF, ± 5%, X7R, 50 V, 0402 [1005 Metric]|[2320765](http://uk.farnell.com/webapp/wcs/stores/servlet/Search?st=2320765)|2|C1, C2 1nF Mpp-set, vctrl -|C1005X5R0J475M050BC|TDK - SMD Multilayer Ceramic Capacitor, C Series, 4.7 µF, ± 20%, X5R, 6.3 V, 0402 [1005 Metric]|[2309027](http://uk.farnell.com/webapp/wcs/stores/servlet/Search?st=2309027)|2|C3, C4 4.7uF +|GRM155R61E105KA12D|MURATA - SMD Multilayer Ceramic Capacitor, GRM Series, 1 µF, ± 10%, X5R, 25 V, 0402 [1005 Metric]|[2218855](http://uk.farnell.com/webapp/wcs/stores/servlet/Search?st=2218855)|1|C3 1uF +|C1005X5R0J475M050BC|TDK - SMD Multilayer Ceramic Capacitor, C Series, 4.7 µF, ± 20%, X5R, 6.3 V, 0402 [1005 Metric]|[2309027](http://uk.farnell.com/webapp/wcs/stores/servlet/Search?st=2309027)|1|C4 4.7uF |06036D106MAT2A|AVX - SMD Multilayer Ceramic Capacitor, 10 µF, ± 20%, X5R, 6.3 V, 0603 [1608 Metric]|[1833804](http://uk.farnell.com/webapp/wcs/stores/servlet/Search?st=1833804)|4|C5, C6, C7, C8 10µF 0603 |GRM31CR60J107ME39L.|MURATA - SMD Multilayer Ceramic Capacitor, GRM Series, 100 µF, ± 20%, X5R, 6.3 V, 1206 [3216 Metric]|[1735535](http://uk.farnell.com/webapp/wcs/stores/servlet/Search?st=1735535)|1|C9 100µF 1206 optional |CRG0402F1K0|TE CONNECTIVITY - Surface Mount Chip Resistor, Thick Film, CRG Series, 1 kohm, 63 mW, ± 1%, 50 V, 0402 [1005 Metric]|[2331474](http://uk.farnell.com/webapp/wcs/stores/servlet/Search?st=2331474)|1|R1 1k Mpp-set diff --git a/hardware/solar-breakout/bristol_longshot.brd b/hardware/solar-breakout/bristol_longshot.brd index 6bb5314..33a86ac 100644 --- a/hardware/solar-breakout/bristol_longshot.brd +++ b/hardware/solar-breakout/bristol_longshot.brd @@ -6,7 +6,7 @@ - + @@ -34,8 +34,8 @@ - - + + @@ -159,7 +159,7 @@ BATTERY_MOSFET_CTRL Connect solar to output -LTC4071 +LTC4070 BSS84 BSS84 SPV1040 @@ -1597,7 +1597,7 @@ by exp-lbrs.ulp - + @@ -1608,7 +1608,7 @@ by exp-lbrs.ulp - + @@ -1650,11 +1650,7 @@ by exp-lbrs.ulp * - - - - - + * >NAME >VALUE @@ -1846,51 +1842,51 @@ Please make sure your boards conform to these design rules. - + - - - - - + + + + + - - + + - - - + + + - - - - - + + + + + - + - - - - - - - - + - - + + + + + + + + + @@ -1907,21 +1903,21 @@ Please make sure your boards conform to these design rules. - - + + - - - + + + - + - - + + @@ -1929,23 +1925,19 @@ Please make sure your boards conform to these design rules. - - - + + + - - + + - + - - - - - + @@ -2090,7 +2082,7 @@ Please make sure your boards conform to these design rules. - + @@ -2145,17 +2137,20 @@ Please make sure your boards conform to these design rules. - - + + + + + - - - + + + @@ -2171,15 +2166,32 @@ Please make sure your boards conform to these design rules. - + - - - + + + + + + + + + + + + + + + + + + + + @@ -2251,7 +2263,7 @@ Please make sure your boards conform to these design rules. - + @@ -2265,17 +2277,17 @@ Please make sure your boards conform to these design rules. - + - + - - + + @@ -2291,7 +2303,7 @@ Please make sure your boards conform to these design rules. - + @@ -2304,9 +2316,9 @@ Please make sure your boards conform to these design rules. - - - + + + @@ -2318,20 +2330,20 @@ Please make sure your boards conform to these design rules. - - + + - - + + - - - - + + + + @@ -2349,41 +2361,21 @@ Please make sure your boards conform to these design rules. - - + + - - - - - - - - - - - - - - - - - - - - - - - + + + - - + + @@ -2391,11 +2383,14 @@ Please make sure your boards conform to these design rules. - - + + + + + diff --git a/hardware/solar-breakout/bristol_longshot.brd.pdf b/hardware/solar-breakout/bristol_longshot.brd.pdf index 99023eb..5e1cceb 100644 Binary files a/hardware/solar-breakout/bristol_longshot.brd.pdf and b/hardware/solar-breakout/bristol_longshot.brd.pdf differ diff --git a/hardware/solar-breakout/bristol_longshot.brd.png b/hardware/solar-breakout/bristol_longshot.brd.png index 443524f..e67280d 100644 Binary files a/hardware/solar-breakout/bristol_longshot.brd.png and b/hardware/solar-breakout/bristol_longshot.brd.png differ diff --git a/hardware/solar-breakout/bristol_longshot.sch b/hardware/solar-breakout/bristol_longshot.sch index 575c8b9..364390c 100644 --- a/hardware/solar-breakout/bristol_longshot.sch +++ b/hardware/solar-breakout/bristol_longshot.sch @@ -7424,7 +7424,7 @@ by exp-lbrs.ulp - + @@ -7435,7 +7435,7 @@ by exp-lbrs.ulp - + @@ -7477,61 +7477,57 @@ by exp-lbrs.ulp * - - - - - + * >NAME >VALUE - - - - - - - - - - - - - - ->NAME ->VALUE + + + + + + + + + + + + + + +>NAME +>VALUE - -Li-Ion/Polymer Shunt Battery Charger System with Low Battery Disconnect + +Li-Ion/Polymer Shunt Battery Charger System - + - + - + - + - - - + + + - + @@ -7550,21 +7546,21 @@ by exp-lbrs.ulp - + - - + + - + - + - + @@ -7574,24 +7570,24 @@ by exp-lbrs.ulp - + - + - - + + - + - - - - - + + + + + @@ -7600,16 +7596,15 @@ by exp-lbrs.ulp - + - - + @@ -7618,10 +7613,11 @@ by exp-lbrs.ulp + - + @@ -7638,18 +7634,16 @@ by exp-lbrs.ulp Input voltage 2v - 2.4v from 4x solar panel We draw power from both Solar and Battery -R5 = 220kΩ, R7 = 82kΩ +R2 = 220kΩ, R3 = 82kΩ Vout set = 4.6V -R5 = 180kΩ, R7 = 71.5kΩ +R2 = 180kΩ, R3 = 71.5kΩ Vout set = 4.4V >2V is enough to self-start conversion NTC not used -Float Voltage = 4.0V -Low Batt. Cutoff = 3.2V -Battery is cutoff when < 3.2V. -LTC4071 shunts current when battery > 4.0V. +ADJ = GND -> Float Voltage = 4.0V +LTC4071 shunts current when battery > 4.0V. Start of cycle: Vd = 4.6-3.2V = 1.4V I = 70mA @@ -7666,7 +7660,7 @@ during normal operation. If solar voltage drops the MOSFETs cutoff battery charging first. Connect to enable battery charging -Could use the body diode of the MOSFETs +Could use the body diode of the MOSFETs but Vf is lower this way EDIT: Not sure if standard cutoffs are useful. The internal resistance is too large. @@ -7693,22 +7687,22 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - + - - + + - + - + - + @@ -7719,24 +7713,24 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - + - + - - + + - + - - - - - + + + + + @@ -7745,16 +7739,15 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - + - - + @@ -7763,21 +7756,22 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - - + + + - + - + @@ -7786,21 +7780,21 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - + - + - + - + @@ -7813,7 +7807,7 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - + @@ -7824,15 +7818,15 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - + - + - + @@ -7849,15 +7843,15 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - + - + - + @@ -7878,7 +7872,7 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - + @@ -7891,25 +7885,21 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - - - - - - - + - - - - - + + + + + + + - + @@ -7947,12 +7937,12 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - + - + - + @@ -7974,16 +7964,38 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - - - - + + + + + + + + + + + + + + + + @@ -8018,7 +8030,7 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - + @@ -8038,13 +8050,13 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - + @@ -8070,7 +8082,7 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - + @@ -8086,10 +8098,10 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - + - - + + @@ -8105,8 +8117,8 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - - + + @@ -8117,27 +8129,27 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - - + + - - - - - - - - - - - - - - - - - - - - - + - - + + - + @@ -8209,8 +8194,8 @@ Bump up SPV output voltage to 4.7V nom (4.8V max) for 20mA termination current.< - - + + diff --git a/hardware/solar-breakout/bristol_longshot.sch.pdf b/hardware/solar-breakout/bristol_longshot.sch.pdf index fb9e314..ece7936 100644 Binary files a/hardware/solar-breakout/bristol_longshot.sch.pdf and b/hardware/solar-breakout/bristol_longshot.sch.pdf differ diff --git a/hardware/solar-breakout/bristol_longshot.sch.png b/hardware/solar-breakout/bristol_longshot.sch.png index f3404f6..521df81 100644 Binary files a/hardware/solar-breakout/bristol_longshot.sch.png and b/hardware/solar-breakout/bristol_longshot.sch.png differ diff --git a/hardware/solar-breakout/parts b/hardware/solar-breakout/parts index e1a0d56..0785291 100644 --- a/hardware/solar-breakout/parts +++ b/hardware/solar-breakout/parts @@ -7,7 +7,7 @@ | Part | Description | Supplier | Quantity Required | Notes | --- | --- | --- | --- | --- 511-SPV1040T 1 U1 MPPT SPV1040T -1839141 1 U2 Li-ion battery charger LTC4070 - replaces LTC4071, leave pin 7 floating +1839141 1 U2 Li-ion battery charger LTC4070 2400648 595-TPS62243DRVT 1 U3 Buck Converter DRVT = SON-6 TPS62243 1829262 1 TVS diode for MPPT D1 1525484 1 Small signal schottky RB161M D2 @@ -19,7 +19,8 @@ 2408024 1 L1 Lx for MPPT LPS3015 2428203 1 Inductor for Buck L2 2320765 2 C1, C2 1nF Mpp-set, vctrl -2309027 2 C3, C4 4.7uF +2218855 1 C3 1uF +2309027 1 C4 4.7uF 1833804 4 C5, C6, C7, C8 10µF 0603 1735535 1 C9 100µF 1206 optional 2331474 1 R1 1k Mpp-set