Med-tronic Physio-Control LIFEPAK 20 LP20 Defibrillator Power Supply Board MVLT60-1201 S15
► Brief Introduction
The Power module is primarily responsible for selecting the best available source to power the rest of the modules/PCBs in the system from the available power sources. A microcontroller with built-in memory makes up the CPU. Communication is provided to the Therapy PCB through a serial interface.
The major subsystems on the A03 Power Module are as follows:
Power Supplies — The A03 Power Module uses ORed_VBatt (battery voltage ORed with dc power from the AC Power Supply Module) to originate two power supply voltages for use throughout the PCB as follows:
- +5 V logic power to drive the CPU microcontroller and memory
- + 3.3 V analog power to drive the power pump for the RS-232 driver circuits
► Functional Description
The AC Power Supply Module is a 60-Watt OEM power supply, designed to meet IEC 60601-1 standards, converting 120/240 Vac (60/50 Hz) input signals to nominal 12 Vdc. The ac power supply provides power to the Power Module for routing to the other PCBs in the device. The 12 Vdc output from the ac power supply is directly diode ORed into the SW_VBatt (switched battery voltage) to power on the Therapy PCB. The Power Module sits above the ac power supply and plugs directly into the ac power supply’s power connector. Both the Power Module and the ac power supply are held mechanically in place by the power assembly bracket.
Power Supplies — The Patient Parameter PCB uses switched power from the Therapy module with dc power from the Battery to originate three power supply voltages for use throughout the PCB as follows:
- +3.3 V logic power to drive the CPU digital signal processor and memory
- +5 V analog power to drive the OEM Interface PCB
- ±5 V patient-isolated supply to drive the ECG pre-amp
► Specification
| Energy Range | 0 to 450 J |
| Load Resistance | 50 Ω ±1% |
| Accuracy | ±2% +2 J |
| Waveforms | NSR, VF, and Sine Wave |
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► Company Description
As an expert in medical equipment, we have many years of experience in the production and sale of medical equipment. Our products are of high quality, and have always received unanimous praise from domestic and foreign customers.
We are masters of medical equipment maintenance technology and have always been at the forefront of developing the most advanced kinds of medical equipment and accessories to provide customers and society with the best quality services.
We adhere to the concept of win-win cooperation and are committed to protecting the medical device market, providing perfect preferential prices, excellent quality and reliable services.
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