Mindray BeneView T6 - Page 26

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Battery Interface Board
The battery interface board connects batteries to the power module, enabling charging and
discharging between the batteries and the power board.
Power Module
The power module is located at the back of the patient monitor. The main part of the power
module is the power board, which contains 4 PCBs: charging & power management board,
voltage drop DC inverter, voltage rise and drop DC inverter, and voltage drop 5 V CIS power
board.
The power module transforms the input power into DC and then forwards them to each
component of the patient monitor. The input power comes from either the batteries or an AC
source. The patient monitor will run power from the AC source whenever an AC source is
available. If the AC source becomes unavailable, the patient monitor will automatically
switch to the battery power. This does not affect the monitor’s operating status.
Power module has an AC input socket at its backside, and a socket at its front provides 4
connections to the batteries, main board, iView components and USB interface board
respectively. The power module protects itself and the patient monitor by switching off AC
input or DC output in case of overcurrent, short circuit and overvoltage.The power module
provides 4 DC outputs:
Outputs Description
+3.3 V
Goes to the LCD, mother board, CPU board, DVI interface board and
integral module rack.
+5.0 V
Goes to the DVI interface board, recorder, CF storage card board and
USB interface board.
+5.0 V CIS Goes to the iView assembly.
+12 V
Goes to the recorder, LCD inverter, integral module rack, parameter
modules and USB interface board.
The systematic principle diagram of the power module is as follows: