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Motorola MTR3000 Basic Service Manual

Motorola MTR3000
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MTR3000 Power Supply 7-5
Figure 7-2 Power Supply Functional Block Diagram
THERMAL
SENSOR
FAN
CONTROL
FILTER
CHOKE
DC INPUT
(21.6 – 32 VDC)
J5
14.2 VDC
I/P SWITCH WITH REVERSE POLARITY
PROTECTION CIRCUIT
AUXILIARY
POWER
SUPPLY
CROWBAR
CIRCUIT
PFC
CIRCUIT
FORWARD
CONVERTER
1
4
2
5
GROUND
3
6
28.6 VDC
1
2
BATT NEG
BATT POS
J3
TO PA
MODULE
J2
1
4
5
6
5.1 VDC
3
4
14.2 VDC
2
7
GROUND
8
TO
BACKPLANE
INTERFACE
BOARD
1
J1
TO FAN
AC FAIL
BRIDGE RECTIFIER
AND INRUSH
EMI
FILTER
AC MAINS INPUT
(85 – 264 VAC,
50/60 Hz)
DRV
BULK +
SVCC
LS
PVCC
+28.6VP
STEP-DOWN
BULK CONVERTER
+14.2VP
OUTPUT FILTER /
OVERV, I SENSE
OUTPUT FILTER /
OVERV, I SENSE
STEP-DOWN
BULK CONVERTER
OUTPUT FILTER /
OVERV, I SENSE
CROWBAR
CIRCUIT
PWM
CONTROLLER
PWM
CONTROLLER
SYNC
HOUSEKEEPING
CIRCUIT
OFF
LS
THERMAL
SENSOR
DRV
THERMAL
SENSOR
PWM CONTROLLER &
GATE DRIVE CIRCUIT
SYNC, OFF
2
FAULT 1
FAULT 2
FAULT 3
(OFF or HICCUP)
FAULT 1, 2, 3

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Motorola MTR3000 Specifications

General IconGeneral
BrandMotorola
ModelMTR3000
CategoryAccessories
LanguageEnglish

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