50A 70A Ideal Diode Module Solar Anti-Backflow Protection Board DC 4-90V Low Voltage for Battery UPS Reverse Polarity Protection

50A 70A Ideal Diode Module Solar Anti-Backflow Protection Board DC 4-90V Low Voltage for Battery UPS Reverse Polarity ProtectionFeatures1. Selectable high current (50A/70A) for robust load-handling capability.2. Wide DC voltage range (4–90V) suitable for various scenarios.3. Low voltage drop and reverse-flow protection; operates without overheating.4. Replaces traditional diodes; offers high efficiency and low power loss.5. Optimized for solar rectification; ensures stable charging.SpecificationsInput Voltage: DC 4–90VOperating Current: 50A/70A (enhance heat dissipation if exceeding 20A/30A)Quiescent Current: 300µAOn-state Resistance: 50A: 1.5mΩ / 70A: 0.75mΩVoltage Drop: Actual current × On-state resistance (e.g., at 10A: 10 × 0.0036 = 0.046V)Power Loss: (Actual current)² × On-state resistanceSwitching Frequency: Up to 150HzInput Reverse Polarity Protection: Yes (no damage if connected in reverse)Operating Temperature: -40 to +125°CApplications1. Dual power supply paralleling and UPS applications.2. Redundant power supply systems.3. Main/auxiliary battery paralleling.4. Hot-swapping batteries for drones and electronic equipment.5. Reverse-flow protection for batteries, solar panels, and power modules.6. Input reverse polarity protection for DC electronics and power modules.Precautions1. The negative terminal of the main current loop does not need to pass through the module, but the module's negative terminal must be connected (a thin wire suffices).2. For DC use only; switching frequency must not exceed 150Hz; not suitable for AC rectification.3. Beware of surge voltages damaging the chip; if operating at high voltages or with inductive loads, add TVS diodes and electrolytic capacitors at the input and output to suppress surges.4. Enhance heat dissipation (e.g., larger heatsink or forced-air cooling) if operating at high currents with significant heat generation.5. Multiple units can be connected in parallel to increase current capacity or the number of channels. 6. When connecting main and auxiliary batteries in parallel, if an ideal diode is not installed on the main battery, ensure that the auxiliary battery voltage does not exceed the main battery voltage. If ideal diodes are installed on both the main and auxiliary batteries, there are no voltage difference requirements for parallel connection.7. Do not use a multimeter's diode or resistance settings to measure the internal resistance of the ideal diode; this is an incorrect measurement method. Internal resistance can be calculated using the voltage drop across the ideal diode and the current flowing through it. For example: if the current is 10A and the voltage drop is 0.015V, then internal resistance = 0.015V / 10A = 0.0015Ω. Please account for the effect of circuit voltage drop.Package ContentsDiode module x1 (model of your choice)Heat-shrink tubing x1