%PDF-1.4
%
1 0 obj
<<
/Type /Catalog
/Version /1.6
/Pages 2 0 R
/AcroForm 3 0 R
/Metadata 4 0 R
/PageLabels 5 0 R
>>
endobj
6 0 obj
<<
/Author (ON Semiconductor)
/CreationDate (D:20150428130619-07'00')
/Creator (BroadVision, Inc.)
/ModDate (D:20200929090119+02'00')
/Producer (Acrobat Distiller 10.0.0 \(Windows\))
/Subject <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>
/Title (NCP1217 - PWM Controller, Fixed Frequency, Current Mode)
>>
endobj
2 0 obj
<<
/Type /Pages
/Kids [7 0 R 8 0 R 9 0 R 10 0 R 11 0 R 12 0 R 13 0 R 14 0 R 15 0 R 16 0 R
17 0 R 18 0 R 19 0 R 20 0 R 21 0 R 22 0 R 23 0 R 24 0 R 25 0 R 26 0 R
27 0 R]
/Count 21
>>
endobj
3 0 obj
<<
/DA (/Helv 0 Tf 0 g )
/DR 28 0 R
/Fields []
>>
endobj
4 0 obj
<<
/Length 5660
/Subtype /XML
/Type /Metadata
>>
stream
application/pdf
ON Semiconductor
NCP1217 - PWM Controller, Fixed Frequency, Current Mode
Housed in an SO−8 or PDIP−7 package, the NCP1217 represents
the enhanced version of the NCP1203−based controllers. Due to its
high drive capability, NCP1217 drives large gate−charge MOSFETs,
which together with internal ramp compensation and built−in
overvoltage protection, ease the design of modern AC/DC adapters.
NCP1217 offers a true alternative to UC384X−based designs.
With an internal structure operating at different fixed frequencies
(65–100–133 kHz), the controller features a high−voltage startup FET,
which ensures a clean and loss less startup sequence. Its current−mode
control topology provides an excellent input audio−susceptibility and
inherent pulse−by−pulse control. Internal ramp compensation easily
prevents subharmonic oscillations from taking place in continuous
conduction mode designs.
When the current setpoint falls below a given value, e.g. the output
power demand diminishes, the IC automatically enters the so−called
skip cycle mode and provides excellent efficiency at light loads.
Because this occurs at a user adjustable low peak current, no acoustic
noise takes place.
The NCP1217 features two efficient protective circuitries: 1) In
presence of an overcurrent condition, the output pulses are disabled
and the device enters a safe burst mode, trying to restart. Once the
default has gone, the device auto−recovers. 2) If an external signal
(e.g. a temperature sensor) pulls Pin 1 above 3.2 V, output pulses are
immediately stopped and the NCP1217 stays latched in this position.
Reset occurs when the VCC collapses to ground, e.g. the user unplugs
the power supply.
2015-04-28T13:06:19-07:00
BroadVision, Inc.
2020-09-29T09:01:19+02:00
2020-09-29T09:01:19+02:00
Acrobat Distiller 10.0.0 (Windows)
uuid:de83cd03-4a93-4f0c-a015-7d6ccf20fc96
uuid:67f19a29-fd0c-4bca-b278-f7b539ef3fb8
Print
endstream
endobj
5 0 obj
<<
/Nums [17 29 0 R 18 30 0 R 20 31 0 R]
>>
endobj
7 0 obj
<<
/Annots [32 0 R 33 0 R 34 0 R]
/Contents [35 0 R 36 0 R 37 0 R 38 0 R 39 0 R 40 0 R 41 0 R 42 0 R]
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 43 0 R
/Rotate 0
/Type /Page
>>
endobj
8 0 obj
<<
/Annots [44 0 R]
/Contents 45 0 R
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 46 0 R
/Rotate 0
/Type /Page
>>
endobj
9 0 obj
<<
/Annots [47 0 R]
/Contents 48 0 R
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 49 0 R
/Rotate 0
/Type /Page
>>
endobj
10 0 obj
<<
/Annots [50 0 R 51 0 R 52 0 R 53 0 R 54 0 R 55 0 R 56 0 R 57 0 R]
/Contents 58 0 R
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 59 0 R
/Rotate 0
/Type /Page
>>
endobj
11 0 obj
<<
/Annots [60 0 R 61 0 R]
/Contents 62 0 R
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 63 0 R
/Rotate 0
/Type /Page
>>
endobj
12 0 obj
<<
/Annots [64 0 R]
/Contents 65 0 R
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 66 0 R
/Rotate 0
/Type /Page
>>
endobj
13 0 obj
<<
/Annots [67 0 R]
/Contents 68 0 R
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 69 0 R
/Rotate 0
/Type /Page
>>
endobj
14 0 obj
<<
/Annots [70 0 R]
/Contents 71 0 R
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 72 0 R
/Rotate 0
/Type /Page
>>
endobj
15 0 obj
<<
/Annots [73 0 R 74 0 R 75 0 R 76 0 R]
/Contents 77 0 R
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 78 0 R
/Rotate 0
/Type /Page
>>
endobj
16 0 obj
<<
/Annots [79 0 R 80 0 R]
/Contents 81 0 R
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 82 0 R
/Rotate 0
/Type /Page
>>
endobj
17 0 obj
<<
/Annots [83 0 R 84 0 R]
/Contents 85 0 R
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 86 0 R
/Rotate 0
/Type /Page
>>
endobj
18 0 obj
<<
/Annots [87 0 R 88 0 R 89 0 R]
/Contents 90 0 R
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 91 0 R
/Rotate 0
/Type /Page
>>
endobj
19 0 obj
<<
/Annots [92 0 R 93 0 R 94 0 R]
/Contents 95 0 R
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 96 0 R
/Rotate 0
/Type /Page
>>
endobj
20 0 obj
<<
/Annots [97 0 R 98 0 R]
/Contents 99 0 R
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 100 0 R
/Rotate 0
/Type /Page
>>
endobj
21 0 obj
<<
/Annots [101 0 R 102 0 R 103 0 R]
/Contents 104 0 R
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 105 0 R
/Rotate 0
/Type /Page
>>
endobj
22 0 obj
<<
/Annots [106 0 R 107 0 R]
/Contents 108 0 R
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 109 0 R
/Rotate 0
/Type /Page
>>
endobj
23 0 obj
<<
/Annots [110 0 R]
/Contents 111 0 R
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 112 0 R
/Rotate 0
/Type /Page
>>
endobj
24 0 obj
<<
/Contents [113 0 R 114 0 R 115 0 R 116 0 R 117 0 R 118 0 R 119 0 R 120 0 R]
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 121 0 R
/Rotate 0
/Type /Page
>>
endobj
25 0 obj
<<
/Contents [122 0 R 123 0 R 124 0 R 125 0 R 126 0 R 127 0 R 128 0 R 129 0 R]
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 130 0 R
/Rotate 0
/Type /Page
>>
endobj
26 0 obj
<<
/Contents 131 0 R
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 132 0 R
/Rotate 0
/Type /Page
>>
endobj
27 0 obj
<<
/Annots [133 0 R]
/Contents [134 0 R 135 0 R 136 0 R 137 0 R 138 0 R 139 0 R 140 0 R 141 0 R]
/CropBox [0.0 0.0 612.0 792.0]
/MediaBox [0.0 0.0 612.0 792.0]
/Parent 2 0 R
/Resources 142 0 R
/Rotate 0
/Type /Page
>>
endobj
28 0 obj
<<
/Encoding 143 0 R
/Font 144 0 R
>>
endobj
29 0 obj
<<
/S /D
>>
endobj
30 0 obj
<<
/S /D
>>
endobj
31 0 obj
<<
/S /D
>>
endobj
32 0 obj
<<
/A 145 0 R
/Border [0 0 0]
/Rect [418.167 610.299 493.852 618.917]
/Subtype /Link
/Type /Annot
>>
endobj
33 0 obj
<<
/Border [0 0 0]
/Dest [23 0 R /XYZ null null null]
/Rect [451.672 134.249 459.383 140.939]
/Subtype /Link
/Type /Annot
>>
endobj
34 0 obj
<<
/Border [0 0 0]
/Dest [23 0 R /XYZ null null null]
/Rect [451.049 297.014 458.759 303.704]
/Subtype /Link
/Type /Annot
>>
endobj
35 0 obj
<<
/Length 1700
/Filter /FlateDecode
>>
stream
HWko6_
|?a@4mmb+ZGre9wHJ:Exyէ'?NV+,^aL^eϐ2{,͔`d32~9<[zfCFiKR(EwcdNQƸ&K88h.׳\w媮U[7dQm모y]۔w&y296'I