MC34262DG ON Semiconductor, MC34262DG Datasheet - Page 14

• Manufacturer Part Number: MC34262DG
• Description: IC PFC CONTROLLER CRM 8SOIC
• Manufacturer: ON Semiconductor

Specifications of MC34262DG

• Mode: Critical Conduction (CRM)
• Current - Startup: 250µA
• Voltage - Supply: 12 V ~ 28 V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• Start-up Supply Current: 250uA
• Operating Temp Range: 0C to 85C
• Operating Temperature Classification: Commercial
• Package Type: SOIC N
• Pin Count: 8
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: MC34262DG; MC34262DGOS

500 V
400 V
115 Vac
0 V
Input
Neutral
Earth
Line
An RFI filter is required for best performance when connecting the preconverter directly to the ac line. The filter attenuates
the level of high frequency switching that appears on the ac line current waveform. Figures 19 and 20 work well with
commercially available two stage filters such as the Delta Electronics 03DPCG5. Shown above is a single stage test filter
that can easily be constructed with four ac line rated capacitors and a common- -mode transformer. Coilcraft CMT3- -28- -2
was used to test Figures 19 and 20. It has a minimum inductance of 28 mH and a maximum current rating of 2.0 A. Coilcraft
CMT4- -17- -9 was used to test Figure 21. It has a minimum inductance of 17 mH and a maximum current rating of 9.0 A. Circuit
conversion efficiency η (%) was calculated without the power loss of the RFI filter.
26%
Autoformer
Transformer
2X Step--Up
Isolation
Input = 115 VAC, Output = 175 W
Without Overvoltage Comparator
2.0 ms/DIV
200 ms/DIV
AC POWER ANALYZER
PM 1000
I
Figure 23. Power Factor Corrected Input Waveforms
O
Figure 24. Output Voltage Startup Overshoot
Figure 25. Power Factor Test Set- -Up
Vcf
W
0
7
VA
Acf
9
1
(Figure 20 Circuit)
Ainst
http://onsemi.com
PF
11
2
(Figure 20 Circuit)
FREQ
Vrms
13
3
Arms
HARM
5
14
432 V
400 V
A
0 V
LO
HI
LO
HI
Voltech
V
Input = 230 VAC, Output = 175 W
0.1
With Overvoltage Comparator
8%
200 ms/DIV
2.0 ms/DIV
RFI Test Filter
T
0.005
0.005
1.0
Controller Circuit
Output to Power
0 to 270 Vac
Factor