Commit e1a47582 authored by Eric Kuzmenko's avatar Eric Kuzmenko
Browse files

Replace the AP22800 load switch with the P-channel AP22814 load switch IC due...

Replace the AP22800 load switch with the P-channel AP22814 load switch IC due to its reverse current & over current protection capability, add level shifter circuit to the WWAN's DPR signal

Reverse current is no longer an issue with the load switches. One more obvious "TODO" for the schematic left which is to simply place several 100nF bypass caps on the 5V_P, 3V3_P, and 1V8_P rails (investigate how EmCraft is placing these in their layout).
parent ad9fe1fc
......@@ -65,10 +65,10 @@ F 9 "https://www.digikey.com/products/en/integrated-circuits-ics/interface-codec
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NCR18650B meets requirements
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(interpret RSOC% based on this plot)
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VBUS
Text GLabel 3950 2500 0 60 Input ~ 0
......@@ -2002,10 +1987,10 @@ VBAT_REG
Text Notes 5050 1800 0 236 ~ 47
Battery Charge Controller
$Comp
L GND #PWR075
L GND #PWR074
U 1 1 5B0600CE
P 8700 3050
F 0 "#PWR075" H 8700 2800 50 0001 C CNN
F 0 "#PWR074" H 8700 2800 50 0001 C CNN
F 1 "GND" H 8700 2900 50 0000 C CNN
F 2 "" H 8700 3050 50 0001 C CNN
F 3 "" H 8700 3050 50 0001 C CNN
......@@ -2015,10 +2000,10 @@ $EndComp
Text Notes 8550 2550 0 60 ~ 0
~~110uF
$Comp
L R R308
L R R309
U 1 1 5B0E4134
P 9550 2600
F 0 "R308" V 9630 2600 50 0000 C CNN
F 0 "R309" V 9630 2600 50 0000 C CNN
F 1 "NC" V 9450 2600 50 0000 C CNN
F 2 "Resistors_SMD:R_2512" V 9480 2600 50 0001 C CNN
F 3 "https://riedon.com/media/pdf/CSR.pdf" H 9550 2600 50 0001 C CNN
......@@ -2189,16 +2174,14 @@ Wire Wire Line
5600 2700 5600 2600
Connection ~ 5600 2600
Wire Wire Line
3750 4400 3750 4700
Wire Wire Line
3750 4100 3750 4050
3800 4400 3800 4700
Wire Wire Line
3750 5150 3750 5100
3800 4100 3800 4050
Wire Wire Line
4550 4650 3750 4650
Connection ~ 3750 4650
4550 4650 3800 4650
Connection ~ 3800 4650
Wire Wire Line
3400 4900 3450 4900
3400 4900 3500 4900
Wire Wire Line
3850 3350 3850 3300
Wire Wire Line
......@@ -2370,10 +2353,10 @@ F 9 "https://www.digikey.com/products/en/capacitors/ceramic-capacitors/60?k=&pke
1 0 0 -1
$EndComp
$Comp
L R R309
L R R310
U 1 1 5BA1BB3A
P 9950 2800
F 0 "R309" H 10100 2850 50 0000 C CNN
F 0 "R310" H 10100 2850 50 0000 C CNN
F 1 "330" H 10100 2750 50 0000 C CNN
F 2 "Resistors_SMD:R_0603" V 9880 2800 50 0001 C CNN
F 3 "" H 9950 2800 50 0001 C CNN
......@@ -2381,10 +2364,10 @@ F 3 "" H 9950 2800 50 0001 C CNN
-1 0 0 -1
$EndComp
$Comp
L GND #PWR076
L GND #PWR075
U 1 1 5BA1BC16
P 9950 3350
F 0 "#PWR076" H 9950 3100 50 0001 C CNN
F 0 "#PWR075" H 9950 3100 50 0001 C CNN
F 1 "GND" H 9950 3200 50 0000 C CNN
F 2 "" H 9950 3350 50 0001 C CNN
F 3 "" H 9950 3350 50 0001 C CNN
......@@ -2418,10 +2401,10 @@ F 9 "https://octopart.com/search?q=LTST-C171GKT&start=0" V 9950 3150 60 0001 C
0 -1 -1 0
$EndComp
$Comp
L R R304
L R R305
U 1 1 5B302D80
P 4050 3300
F 0 "R304" V 4125 3300 50 0000 C CNN
F 0 "R305" V 4125 3300 50 0000 C CNN
F 1 "10k" V 3950 3300 50 0000 C CNN
F 2 "Resistors_SMD:R_0603" V 3980 3300 50 0001 C CNN
F 3 "https://www.seielect.com/Catalog/SEI-RMCF_RMCP.pdf" H 4050 3300 50 0001 C CNN
......@@ -2435,20 +2418,20 @@ F 9 "https://www.digikey.com/products/en/resistors/chip-resistor-surface-mount/5
0 1 -1 0
$EndComp
$Comp
L R R303
L R R304
U 1 1 5B2F65C3
P 3750 4250
F 0 "R303" H 3900 4300 50 0000 C CNN
F 1 "10k" H 3875 4200 50 0000 C CNN
F 2 "Resistors_SMD:R_0603" V 3680 4250 50 0001 C CNN
F 3 "https://www.seielect.com/Catalog/SEI-RMCF_RMCP.pdf" H 3750 4250 50 0001 C CNN
F 4 "Stackpole" H 3750 4250 60 0001 C CNN "MFG Name"
F 5 "RMCF0603JG10K0" H 3750 4250 60 0001 C CNN "MFG Part Num"