Hi everyone. Can you help me with this circuit I am working on, please?. (Image 1)
It consists of a TP4056 charger/controller connected to a 3.7v/1.4Ah Li-Ion battery to supply a low battery indicator and a LOAD (3 leds + 2 fans) through a MT3608 Step Up to raise voltage from 3.7v to 9v. When the TP4056 is charging the battery through the USB port, the load is disconnected by the P-Mosfet.PROBLEM: Voltage drops significantly when the load is connected.TEST1: Circuit without Debouncing/Load connected:Voltage drops from 3.68v to 3.46v (image 2). LowBatteryIndicator: Blinks.TEST2: Circuit with Debouncing/Load connected:1) Debouncing Circuit: The voltage drops to 2.19v at the output of the Smichtt Trigger, therefore it isn't possible to energize the Step Up and the rest of the circuit.2) Low Battery Indicator: Blinks when switch is pressed.TEST3: Circuit with Debouncing/Load disconnected:1) Debouncing Circuit: Works fine (image 3).2) Low Battery Indicator: Doesn't blink when the switch is turned ON/OFF.Is there something that I am forgetting to put in the circuit so the voltage is dropping? I would suppose that the problem is at the DC/DC conversion of the Step Up, but everything is meeting its requirements (Vin:2v-24v/Imax: 2A).
MY SYSTEM DETAILS:Power consumption: 1.702WLow Bat Indicator: (0.037W, 3.7v/0.01A)Load: 2 Fans (1.44W, 9v/0.16A), 3 Leds (0.059W, 2.92v/0.02A).Debouncing Circuit based on a Schmitt Trigger 74HC14 (Vin:2-6v/Vout:2-VCC, VCC and GND connected to battery line).
Thank you in advance!
It consists of a TP4056 charger/controller connected to a 3.7v/1.4Ah Li-Ion battery to supply a low battery indicator and a LOAD (3 leds + 2 fans) through a MT3608 Step Up to raise voltage from 3.7v to 9v. When the TP4056 is charging the battery through the USB port, the load is disconnected by the P-Mosfet.PROBLEM: Voltage drops significantly when the load is connected.TEST1: Circuit without Debouncing/Load connected:Voltage drops from 3.68v to 3.46v (image 2). LowBatteryIndicator: Blinks.TEST2: Circuit with Debouncing/Load connected:1) Debouncing Circuit: The voltage drops to 2.19v at the output of the Smichtt Trigger, therefore it isn't possible to energize the Step Up and the rest of the circuit.2) Low Battery Indicator: Blinks when switch is pressed.TEST3: Circuit with Debouncing/Load disconnected:1) Debouncing Circuit: Works fine (image 3).2) Low Battery Indicator: Doesn't blink when the switch is turned ON/OFF.Is there something that I am forgetting to put in the circuit so the voltage is dropping? I would suppose that the problem is at the DC/DC conversion of the Step Up, but everything is meeting its requirements (Vin:2v-24v/Imax: 2A).
MY SYSTEM DETAILS:Power consumption: 1.702WLow Bat Indicator: (0.037W, 3.7v/0.01A)Load: 2 Fans (1.44W, 9v/0.16A), 3 Leds (0.059W, 2.92v/0.02A).Debouncing Circuit based on a Schmitt Trigger 74HC14 (Vin:2-6v/Vout:2-VCC, VCC and GND connected to battery line).
Thank you in advance!