Beko DPM 28 C7, Руководство по обслуживанию

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MC44608
Few External Components
Reliable and Flexible
SMPS Controller
The MC44608 is a high performance voltage mode controller
designed for off−line converters. This high voltage circuit that
integrates the start−up current source and the oscillator capacitor,
requires few external components while offering a high flexibility and
reliability.
The device also features a very high efficiency stand−by
management consisting of an effective Pulsed Mode operation. This
technique enables the reduction of the stand−by power consumption to
approximately 1.0 W while delivering 300 mW in a 150 W SMPS.
•
Integrated Start−Up Current Source
•
Lossless Off−Line Start−Up
•
Direct Off−Line Operation
•
Fast Start−Up
General Features
•
Flexibility
•
Duty Cycle Control
•
Undervoltage Lockout with Hysteresis
•
On Chip Oscillator Switching Frequency 40, 75, or 100 kHz
•
Secondary Control with Few External Components
Protections
•
Maximum Duty Cycle Limitation
•
Cycle by Cycle Current Limitation
•
Demagnetization (Zero Current Detection) Protection
•
“Over V
CC
Protection” Against Open Loop
•
Programmable Low Inertia Over Voltage Protection
Against Open Loop
•
Internal Thermal Protection
SMPS Controller
•
Pulsed Mode Techniques for a Very High Efficiency
Low Power Mode
•
Lossless Startup
•
Low dV/dT for Low EMI Radiations
Device
Switching
Frequency Shipping
ORDERING INFORMATION
MC44608P40 40 kHz
MC44608P75 75 kHz
PDIP−8
P SUFFIX
CASE 626
1
8
1 8
7
6
5
2
3
4
(Top View)
Demag
I
sense
Control Input
V
i
PIN CONNECTIONS AND
MARKING DIAGRAM
GND
V
CC
Driver
44608Pxxx
Package
Plastic
DIP−8
Plastic
DIP−8
50/Rail
50/Rail
AW
L
YYWW
AWL = Manufacturing Code
YYWW = Date Code
(Top View)
MC44608P100 100 kHz
Plastic
DIP−8
50/Rail