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TOP247P の電気的特性と機能

TOP247PのメーカーはPower Integrationsです、この部品の機能は「(TOP242 - TOP250) Family Extended Power/ Design Flexible/Integrated Off-line Switcher」です。


製品の詳細 ( Datasheet PDF )

部品番号 TOP247P
部品説明 (TOP242 - TOP250) Family Extended Power/ Design Flexible/Integrated Off-line Switcher
メーカ Power Integrations
ロゴ Power Integrations ロゴ 




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TOP247P Datasheet, TOP247P PDF,ピン配置, 機能
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TOP242-250
TOPSwitch®-GX Family
Extended Power, Design Flexible,
EcoSmart,® Integrated Off-line Switcher
Product Highlights
Lower System Cost, High Design Flexibility
• Extended power range for higher power applications
• No heatsink required up to 30 W using P package
• Features eliminate or reduce cost of external components
• Fully integrated soft-start for minimum stress/overshoot
• Externally programmable accurate current limit
• Wider duty cycle for more power, smaller input capacitor
• Separate line sense and current limit pins on Y/R/F packages
• Line under-voltage (UV) detection: no turn off glitches
• Line overvoltage (OV) shutdown extends line surge limit
• Line feed forward with maximum duty cycle (DCMAX)
reduction rejects line ripple and limits DCMAX at high line
• Frequency jittering reduces EMI and EMI filtering costs
• Regulates to zero load without dummy loading
• 132 kHz frequency reduces transformer/power supply size
• Half frequency option in Y/R/F packages for video applications
• Hysteretic thermal shutdown for automatic fault recovery
• Large thermal hysteresis prevents PC board overheating
EcoSmart - Energy Efficient
• Extremely low consumption in remote off mode
(80 mW @ 110 VAC, 160 mW @ 230 VAC)
• Frequency lowered with load for high standby efficiency
• Allows shutdown/wake-up via LAN/input port
Description
TOPSwitch-GX uses the same proven topology as TOPSwitch, cost
effectively integrating the high voltage power MOSFET, PWM
control, fault protection and other control circuitry onto a single
CMOS chip. Many new functions are integrated to
reduce system cost and improve design flexibility, performance
and energy efficiency.
Depending on package type, either 1 or 3 additional pins over the
TOPSwitch standard DRAIN, SOURCE and CONTROL terminals
allow the following functions: line sensing (OV/UV, line feed-
forward/DCMAX reduction), accurate externally set current limit,
remote ON/OFF, synchronization to an external lower frequency,
and frequency selection (132 kHz/66 kHz).
All package types provide the following transparent features: Soft-
start, 132 kHz switching frequency (automatically reduced at light
load), frequency jittering for lower EMI, wider DCMAX, hysteretic
thermal shutdown and larger creepage packages. In addition, all
critical parameters (i.e. current limit, frequency, PWM gain) have
tighter temperature and absolute tolerance, to simplify design and
optimize system cost.
+
AC DC
IN OUT
-
DL
TOPSwitch-GX
CONTROL
C
S XF
Figure 1. Typical Flyback Application.
PI-2632-060200
OUTPUT POWER TABLE
PRODUCT3
230 VAC ±15%4
85-265 VAC
Adapter1
Open
Frame2
Adapter1
Open
Frame2
TOP242 P or G 9 W
TOP242 R 21 W
TOP242 Y or F 10 W
15 W
22 W
22 W
6.5 W
11 W
7W
10 W
14 W
14 W
TOP243 P or G 13 W
TOP243 R 29 W
TOP243 Y or F 20 W
25 W
45 W
45 W
9W
17 W
15 W
15 W
23 W
30 W
TOP244 P or G 16 W
TOP244 R 34 W
TOP244 Y or F 30 W
28 W
50 W
65 W
11 W
20 W
20 W
20 W
28 W
45 W
TOP245 P 19 W
TOP245 R 37 W
TOP245 Y or F 40 W
30 W
57 W
85 W
13 W
23 W
26 W
22 W
33 W
60 W
TOP246 R 40 W 64 W 26 W 38 W
TOP246 Y or F 60 W 125 W 40 W 90 W
TOP247 R 42 W 70 W 28 W 43 W
TOP247 Y or F 85 W 165 W 55 W 125 W
TOP248 R 43 W 75 W 30 W 48 W
TOP248 Y or F 105 W 205 W 70 W 155 W
TOP249 R 44 W 79 W 31 W 53 W
TOP249 Y or F 120 W 250 W 80 W 180 W
TOP250 R 45 W 82 W 32 W 55 W
TOP250 Y or F 135 W 290 W 90 W 210 W
Table 1. Notes: 1. Typical continuous power in a non-ventilated
enclosed adapter measured at 50 °C ambient. 2. Maximum practical
continuous power in an open frame design at 50 °C ambient. See
Key Applications for detailed conditions. 3. See Part Ordering
Information. 4. 230 VAC or 100/115 VAC with doubler.
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TOP247P pdf, ピン配列
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CONTROL (C)
EXTERNAL
CURRENT LIMIT (X)
LINE-SENSE (L)
FREQUENCY (F)
VC
ZC
SHUNT REGULATOR/
ERROR AMPLIFIER
-
+ 5.8 V
IFB
VI (LIMIT)
CURRENT
LIMIT
SOFT
ADJUST START
ON/OFF
VBG + VT
5.8 V
4.8 V
+
-
INTERNAL UV
COMPARATOR
SOFT START
0
INTERNAL
1 SUPPLY
÷8
SHUTDOWN/
AUTO-RESTART
1V
VBG
OV/UV
LINE
SENSE DCMAX
STOP LOGIC
STOP SOFT-
START
DCMAX
DMAX
CLOCK
HYSTERETIC
THERMAL
SHUTDOWN
HALF
FREQ.
SAW
OSCILLATOR WITH JITTER
-
+
PWM
COMPARATOR
LIGHT LOAD
RE
FREQUENCY
REDUCTION
SQ
R
Figure 2a. Functional Block Diagram (Y, R or F Package).
CONTROL (C)
MULTI-
FUNCTION (M)
VC
ZC
SHUNT REGULATOR/
ERROR AMPLIFIER
-
+ 5.8 V
IFB
VI (LIMIT)
CURRENT
LIMIT
ADJUST
SOFT
START
ON/OFF
5.8 V
4.8 V
+
-
INTERNAL UV
COMPARATOR
VBG + VT
STOP LOGIC
VBG
OV/UV
LINE
SENSE DCMAX
STOP SOFT-
START
DCMAX
DMAX
CLOCK
SOFT START
0
1
÷8
SHUTDOWN/
AUTO-RESTART
HYSTERETIC
THERMAL
SHUTDOWN
SAW
-
OSCILLATOR WITH JITTER
+
PWM
COMPARATOR
LIGHT LOAD
RE
FREQUENCY
REDUCTION
INTERNAL
SUPPLY
S
R
Q
Figure 2b. Functional Block Diagram (P or G Package).
DataSheet4 U .com
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TOP242-250
DRAIN (D)
-
+
CURRENT LIMIT
COMPARATOR
CONTROLLED
TURN-ON
GATE DRIVER
LEADING
EDGE
BLANKING
SOURCE (S)
PI-2639-060600
DRAIN (D)
-
+
CURRENT LIMIT
COMPARATOR
CONTROLLED
TURN-ON
GATE DRIVER
LEADING
EDGE
BLANKING
SOURCE (S)
PI-2641-061200
3K
9/03
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TOP247P 電子部品, 半導体
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TOP242-250
CONTROL (C) Pin Operation
voltage of 5.8 V, current in excess of the consumption of the
The CONTROL pin is a low impedance node that is capable of
receiving a combined supply and feedback current. During
normal operation, a shunt regulator is used to separate the
chip is shunted to SOURCE through resistor RE as shown in
Figure 2. This current flowing through RE controls the duty
cycle of the power MOSFET to provide closed loop regulation.
feedback signal from the supply current. CONTROL pin
voltage VC is the supply voltage for the control circuitry
including the MOSFET gate driver. An external bypass
capacitor closely connected between the CONTROL and
The shunt regulator has a finite low output impedance Z that
C
sets the gain of the error amplifier when used in a primary
feedback configuration. The dynamic impedance ZC of the
CONTROL pin together with the external CONTROL pin
SOURCE pins is required to supply the instantaneous gate drive capacitance sets the dominant pole for the control loop.
current. The total amount of capacitance connected to this pin
also sets the auto-restart timing as well as control loop When a fault condition such as an open loop or shorted output
compensation.
prevents the flow of an external current into the CONTROL
pin, the capacitor on the CONTROL pin discharges towards
When rectified DC high voltage is applied to the DRAIN pin 4.8 V. At 4.8 V, auto-restart is activated which turns the output
during start-up, the MOSFET is initially off, and the MOSFET off and puts the control circuitry in a low current
CONTROL pin capacitor is charged through a switched high standby mode. The high-voltage current source turns on and
General Information & Table of Contentsvoltage current source connected internally between the DRAIN charges the external capacitance again. A hysteretic internal
and CONTROL pins. When the CONTROL pin voltage V
C
reaches approximately 5.8 V, the control circuitry is activated
and the soft-start begins. The soft-start circuit gradually
supply under-voltage comparator keeps V within a window
C
of typically 4.8 V to 5.8 V by turning the high-voltage current
source on PandrooffdasuschotwnSineFligeurce t8o. TrheGauuto-irdesteart
1
increases the duty cycle of the MOSFET from zero to the circuit has a divide-by-eight counter which prevents the output
maximum value over approximately 10 ms. If no external
feedback/supply current is fed into the CONTROL pin by the
MOSFET from turning on again until eight discharge/charge
Data Sheets 2cycles have elapsed. This is accomplished by enabling the
end of the soft-start, the high voltage current source is turned output MOSFET only when the divide-by-eight counter reaches
off and the CONTROL pin will start discharging in response
to the supply current drawn by the control circuitry. If the
full count (S7). The counter effectively limits TOPSwitch-GX
Application Notes 3power dissipation by reducing the auto-restart duty cycle to
power supply is designed properly, and no fault condition such typically 4%. Auto-restart mode continues until output
as open loop or shorted output exists, the feedback loop will
close, providing external CONTROL pin current, before the
voltage regulation is again achieved through closure of the
feedback loop.
Design Ideas 4
CONTROL pin voltage has had a chance to discharge to the
lower threshold voltage of approximately 4.8 V (internal supply
under-voltage lockout threshold). When the externally fed
Oscillator and Switching Frequency
Design Tools 5The internal oscillator linearly charges and discharges an
current charges the CONTROL pin to the shunt regulator internal capacitance between two voltage levels to create a
Quality and Reliability 6
VLINE
0V
VUV
VC
0V
VDRAIN
S7 S0
Package Information 7
DPA-Switch DC-DC SeminarS1 S2
S6 S7 S0 S1 S2
S6 S7
S0
S1 S2
S6 S7 S7
5.8 V
4.8 V
LinkSwitch & TinySwitch-II AC-DC Seminar
8
9
0 V TOPSwitch-GX AC-DC Seminar 10
VOUT
0V
Sales Representatives and Distributors 11
12
3
Note: S0 through S7 are the output states of the auto-restart counter
2
Figure 8. Typical Waveforms for (1) Power Up (2) Normal Operation (3) Auto-restart (4) Power Down.
4
PI-2545-082299
6K
9/03
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共有リンク

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部品番号部品説明メーカ
TOP247

(TOP242 - TOP250) up to 290 W Extended Power / Integrated Off-line Switcher Family

Power Integrations
Power Integrations
TOP247F

(TOP242 - TOP250) Family Extended Power/ Design Flexible/Integrated Off-line Switcher

Power Integrations
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TOP247G

(TOP242 - TOP250) Family Extended Power/ Design Flexible/Integrated Off-line Switcher

Power Integrations
Power Integrations
TOP247P

(TOP242 - TOP250) Family Extended Power/ Design Flexible/Integrated Off-line Switcher

Power Integrations
Power Integrations


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