- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄364677 > AN-16 TOPSwitch Flyback Design Methodology PDF資料下載
參數(shù)資料
| 型號(hào)： | AN-16 |
| 英文描述： | TOPSwitch Flyback Design Methodology |
| 中文描述： | TOPSwitch的反激式設(shè)計(jì)方法 |
| 文件頁(yè)數(shù)： | 17/32頁(yè) |
| 文件大?。?/td> | 247K |
| 代理商： | AN-16 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)當(dāng)前第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)
A
6/96
AN-16
17
BVDSS
VMIN
VOR = 135 V
700 V
370 V
390 V
290 V
225 V
90 V
0 V
0 V
DMAX
60%
BLOCKING
DIODE FORWARD RECOVERY = 20 V
VCLM
VCLO
PI-1858-050696
Figure 11. Determine D
MAX
- Universal Input
Step 6. Set ripple current I
R
to peak current I
P
ratio K
RP
(see Figure 12)
K
I
I
RP
R
P
=
Starting with K
= 0.4 for 100/115 VAC or universal input
0.6 for 230 VAC
for most continuous operation
K
RP
may be increased to higher values for less continuous
operation
K
, by definition, can not be larger than 1.0 and may not
be set smaller than above values
`
Many power supply design engineers prefer to use discontinuous
mode (K
=1) design as the control loop is easier to stabilize.
With
TOPSwitch
, because of the built-in loop compensation, it
is possible to use one simple external RC network to stabilize
the loop independent of operating mode. Setting K
to the values
recommended above allows continuous mode operation at low
input line voltage, minimizing the peak primary current for a
given output power, and allowing the use of the smallest
possible
TOPSwitch
for the application.
A K
of 0.6 is recommended for 230VAC (compared to 0.4 for
100/115 VAC and universal input) to accommodate a
significantly taller and wider leading edge current spike caused
by the discharge of the drain node capacitance at the higher
voltage levels.
Step 7. Determine primary waveform parameters I
AVG
,
I
P,
I
R
and
I
RMS
The average DC current I
at low line is simply the input
power divided by V
, where the input power is equal to the
output power divided by the efficiency.
I
P
V
AVG
O
MIN
=
×
η
With K
and D
already determined, the shape of the current
waveform is known. Due to the simple geometry of the
waveform, the Primary peak current I
, ripple current I
R
and
RMS current I
RMS
can be easily derived as a function of I
AVG
:
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AN-17 | Flyback Transformer Design for TOPSwitch Power Supplies |
| AN-18 | TOPSwitch Flyback Transformer Construction Guide |
| AN-19 | TOPSwitch Flyback Power Supply Efficiency |
| AN-20 | Transient Suppression Techniques for TOPSwitch Power Supplies |
| AN-22 | OBSOLETE when inventory is depleted. 10% tolerance no l |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AN1603-433 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:陶瓷天線 Multilayer Chip Antenna for 433MHz Wireless Communication |
| AN1603-868 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:陶瓷天線 Multilayer Chip Antenna for 868MHz Wireless Communication |
| AN1603-916 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Multilayer Chip Antenna for 916MHz Wireless Communication |
| AN1607 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:ITC122 low voltage micro to motor interface |
| AN-161(FC67203) | 制造商:SPC Multicomp 功能描述:CIRCUIT BREAKER 1.6A 制造商:SPC Multicomp 功能描述:CIRCUIT BREAKER, 1.6A 制造商:SPC Multicomp 功能描述:CIRCUIT BREAKER, 1.6A; Voltage Rating V AC:250V; Current Rating:1.6A; No. of Poles:1; SVHC:No SVHC (19-Dec-2012); Breaking Capacity Current AC:20A; External Depth:6mm; External Length / Height:22mm; External Width:12.6mm; Fixing ;RoHS Compliant: Yes |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。