MC44608P100 ON Semiconductor, MC44608P100 Datasheet

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MC44608P100

Manufacturer Part Number
MC44608P100
Description
IC PWM FLYBCK ISO VM 8DIP
Manufacturer
ON Semiconductor
Datasheet

Specifications of MC44608P100

Pwm Type
Voltage Mode
Number Of Outputs
1
Frequency - Max
110kHz
Duty Cycle
86%
Voltage - Supply
6.6 V ~ 13 V
Buck
No
Boost
No
Flyback
Yes
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
Yes
Operating Temperature
-25°C ~ 85°C
Package / Case
8-DIP (0.300", 7.62mm)
Frequency-max
110kHz
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
MC44608P100OS
MC44608
Few External Components
Reliable and Flexible
SMPS 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.
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.
General Features
Protections
SMPS Controller
December, 2003 − Rev. 6
The MC44608 is a high performance voltage mode controller
The device also features a very high efficiency stand−by
Against Open Loop
Low Power Mode
Integrated Start−Up Current Source
Lossless Off−Line Start−Up
Direct Off−Line Operation
Fast Start−Up
Flexibility
Duty Cycle Control
Undervoltage Lockout with Hysteresis
On Chip Oscillator Switching Frequency 40, 75, or 100 kHz
Secondary Control with Few External Components
Maximum Duty Cycle Limitation
Cycle by Cycle Current Limitation
Demagnetization (Zero Current Detection) Protection
“Over V
Programmable Low Inertia Over Voltage Protection
Internal Thermal Protection
Pulsed Mode Techniques for a Very High Efficiency
Lossless Startup
Low dV/dT for Low EMI Radiations
Semiconductor Components Industries, LLC, 2003
CC
Protection” Against Open Loop
1
MC44608P40
MC44608P75
MC44608P100
Control Input
Device
Demag
I
ORDERING INFORMATION
GND
sense
PIN CONNECTIONS AND
AWL
YYWW = Date Code
MARKING DIAGRAM
http://onsemi.com
Frequency
1
2
3
4
Switching
100 kHz
8
40 kHz
75 kHz
= Manufacturing Code
CASE 626
(Top View)
(Top View)
P SUFFIX
PDIP−8
1
Publication Order Number:
Package
Plastic
DIP−8
Plastic
DIP−8
Plastic
DIP−8
8
7
6
5
V
V
Driver
i
CC
MC44608/D
Shipping
50/Rail
50/Rail
50/Rail

Related parts for MC44608P100

MC44608P100 Summary of contents

Page 1

... Demag sense Control Input 3 (Top View) GND 4 (Top View) AWL = Manufacturing Code YYWW = Date Code ORDERING INFORMATION Switching Device Frequency MC44608P40 40 kHz MC44608P75 75 kHz MC44608P100 100 kHz Driver Package Shipping Plastic 50/Rail DIP−8 Plastic 50/Rail DIP−8 Plastic 50/Rail DIP−8 ...

Page 2

DMG + − /20 mV Demag Logic Latched off Output Phase Start−up Start−up Phase Switching m Phase 200 A Phase & Stand−by Stand−by Management OC Leading Edge Output Blanking 2 Isense MAXIMUM RATINGS Rating Total ...

Page 3

... Leading Edge Blanking + Propagation Delay Leading Edge Blanking + Propagation Delay Leading Edge Blanking + Propagation Delay OSCILLATOR SECTION Normal Operation Frequency MC44608P40 Normal Operation Frequency MC44608P75 Normal Operation Frequency MC44608P100 Maximum Duty Cycle @ osc OVERVOLTAGE SECTION Quick OVP Input Filtering (R = 100 kW) ...

Page 4

... V cl−neg−dem dem−NM MC44608P40 MC44608P75 MC44608P100 stup−uvlo1 H uvlo1−uvlo2 = 100 V) and i MC44608P40 MC44608P75 MC44608P100 I CC−latch d http://onsemi.com 4 = − +85 C unless otherwise A Min Typ Max dmg−th H − 30 − dmg − 300 − −0.6 − − dem−lb − ...

Page 5

Pin Name The Demag pin offers 3 different functions: Zero voltage crossing detection (50 mV current detection 1 Demag and 120 mA current detection. The 24 mA level is used to detect the secondary reconfiguration status and the ...

Page 6

In stand−by mode, this current can be lowered as due to the activation of a 200 mA current source (kW) + Ipk max *stby R sense (W) Switching Phase m 200 A & Isense ...

Page 7

OSC 4 V Vcont 2.4 V Clock DMG Iprim Figure 6. The OSC and Clock signals are provided according to the Figure 6. The Clock signals correspond to the CT capacitor discharge. The bottom curve represents the current flowing in ...

Page 8

Overload In the hiccup mode the 3 distinct phases are described as follows (refer to Figure 7): The SWITCHING PHASE: The SMPS output is low and the regulation block reacts by increasing the ON time (dmax = 80%). The ...

Page 9

EQUATION 1 Start−up Phase Duration: (V stup * UVLO2) C Vcc t start– stup where the start−up current flowing through V stup C is the V capacitor value Vcc CC EQUATION 2 Switching Phase Duration: (V ...

Page 10

EQUATION ccS Stup I stup EQUATION stup where ccs stup ...

Page 11

Pin6 V Voltage (V) CC Figure 9. Output Switching Speed − 0.0 0.5 ...

Page 12

C 10.00 9. 6.00 5.00 0 100 200 Vi Pin8 Voltage (Vi) Figure 15. High Voltage Current Source The data in Figure 16 corresponds to the waveform in Figure 17. The Figure ...

Page 13

The Figure 19 represents a complete power supply using the secondary reconfiguration. The specification is as follows: Input source: 3 Outputs Output power Stand−by mode R F6 47288900 FI RFI WIDE C1 FILTER MAINS 100 nF C3 D1, D2, D3, ...

Page 14

The secondary reconfiguration is activated by the mP through the switch. The dV/dt appearing on the high voltage winding (pins 14 of the transformer) at every TMOS switch off, produces a current spike through the series RC network R7, C17. ...

Page 15

F −A− NOTE 2 C −T− N SEATING PLANE 0.13 (0.005) M MC44608 PACKAGE DIMENSIONS PDIP−8 P SUFFIX PLASTIC PACKAGE CASE 626−05 ISSUE ...

Page 16

... Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com MC44608 N. American Technical Support: 800−282−9855 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 http://onsemi.com 16 ON Semiconductor Website: http://onsemi ...

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