E Series Service Manual
9650-1450-01 Rev. D 4-5
Power Supply
The power supply converts DC power from a removable battery or the AC/DC Battery Charger module to voltages required by the E Series hardware.
The power supply circuit converts the raw battery or the Charger PWBA output voltages of +8.5 VDC to +16 VDC into the voltages sh
own in the table
below, including load and line regulation.
VOLTAGE DESCRIPTION
Nominal)
COMMENTSVOLTAGE VDC
(
FUSE_PWR Fused Input Power from Battery/Charger 12
SW_PWR Switched Input Power after Power Switch 12
3VDD + 3.3 VDC Power for Digital circuits 3.3 Switching @ 300 kHz
5VDD + 5.0 VDC Power for Digital circuits 5.0 Switching @ 300 kHz
-5VSS - 5.0 VDC Power for Analog circuits -5.0 Linear
12VEE + 12.0 VDC Power for Analog circuits 12.0 Linear
15VDD + 15.0 VDC Power for VPP and 12VEE 15.0 Switching @ 300 kHz
LCD_BS LCD BIAS Power for LCD display - 18 Switching @ 100 kHz
3_3REF + 3.3 VDC Reference 3.3 Linear