TOP246FN Power Integrations, TOP246FN Datasheet

IC OFFLINE SWIT UVLO HV TO262

TOP246FN

Manufacturer Part Number
TOP246FN
Description
IC OFFLINE SWIT UVLO HV TO262
Manufacturer
Power Integrations
Series
TOPSwitch®-GXr
Type
Off Line Switcherr
Datasheet

Specifications of TOP246FN

Output Isolation
Isolated
Frequency Range
66 ~ 132kHz
Voltage - Output
700V
Power (watts)
125W
Operating Temperature
-40°C ~ 150°C
Package / Case
TO-262-7 (Formed Leads), 5 Leads
Output Voltage
12 V
Input / Supply Voltage (max)
265 VAC
Input / Supply Voltage (min)
85 VAC
Duty Cycle (max)
83 %
Switching Frequency
132 KHz
Supply Current
2.2 mA
Operating Temperature Range
- 40 C to + 150 C
Mounting Style
Through Hole
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
596-1168
TOP246FN

Available stocks

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Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
TOP246FN
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PI
Quantity:
250
Price:
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Part Number:
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Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
TOP246FN
Manufacturer:
POWER
Quantity:
15 000
Price:
TOPSwitch-GX Family
Extended Power, Design Flexible,
EcoSmart, Integrated Off-line Switcher
Lower System Cost, High Design Flexibility
• Extended power range for higher power applications
• No heatsink required up to 34 W using P/G packages
• 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 (DC
• 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
• 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/DC
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 DC
hysteretic thermal shutdown, and larger creepage packages. In
addition, all critical parameters (i.e. current limit, frequency,
PWM gain) have tighter temperature and absolute tolerances
to simplify design and optimize system cost.
reduction rejects line ripple and limits DC
(80 mW at 110 VAC, 160 mW at 230 VAC)
Product Highlights
MAX
®
reduction), accurate externally set
®
MAX
at high line
MAX
)
MAX
,
Figure 1. Typical Flyback Application.
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. For lead-free package options, see Part
Ordering Information. 4. 230 VAC or 100/115 VAC with doubler.
TOP242 P or G
TOP243 P or G
TOP244 P or G
TOP245 P or G
TOP246 P or G
TOP242 Y or F
TOP243 Y or F
TOP244 Y or F
TOP245 Y or F
TOP246 Y or F
TOP247 Y or F
TOP248 Y or F
TOP249 Y or F
TOP250 Y or F
AC
PRODUCT
IN
TOP242 R
TOP243 R
TOP244 R
TOP245 R
TOP246 R
TOP247 R
TOP248 R
TOP249 R
TOP250 R
TOPSwitch-GX
OUTPUT POWER TABLE
3
Adapter
105 W
120 W
135 W
230 VAC ±15%
15 W
10 W
13 W
29 W
20 W
16 W
34 W
30 W
19 W
37 W
40 W
21 W
40 W
60 W
42 W
85 W
43 W
44 W
45 W
9 W
D
S
CONTROL
1
X
Frame
125 W
165 W
205 W
250 W
290 W
L
Open
15 W
22 W
22 W
25 W
45 W
45 W
28 W
50 W
65 W
30 W
57 W
85 W
34 W
64 W
70 W
75 W
79 W
82 W
F
C
4
2
Adapter
6.5 W
11 W
17 W
15 W
11 W
20 W
20 W
13 W
23 W
26 W
15 W
26 W
40 W
28 W
55 W
30 W
70 W
31 W
80 W
32 W
90 W
7 W
9 W
85-265 VAC
November 2005
1
PI-2632-060200
Frame
125 W
155 W
180 W
210 W
Open
10 W
14 W
14 W
15 W
23 W
30 W
20 W
28 W
45 W
22 W
33 W
60 W
26 W
38 W
90 W
43 W
48 W
53 W
55 W
OUT
DC
+
-
2

Related parts for TOP246FN

TOP246FN Summary of contents

Page 1

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 using P/G packages • Features ...

Page 2

TOP242-250 Functional Block Diagram ....................................................................................................................................... 3 Pin Functional Description ...................................................................................................................................... 4 TOPSwitch-GX Family Functional Description ....................................................................................................... 5 CONTROL (C) Pin Operation .................................................................................................................................. 6 Oscillator and Switching Frequency ........................................................................................................................ 6 Pulse Width Modulator and Maximum Duty Cycle .................................................................................................. 7 Light Load ...

Page 3

V C CONTROL ( SHUNT REGULATOR/ ERROR AMPLIFIER - + 5 (LIMIT) CURRENT LIMIT SOFT START ADJUST ON/OFF EXTERNAL CURRENT LIMIT ( LINE-SENSE ( ...

Page 4

TOP242-250 Pin Functional Description DRAIN (D) Pin: High voltage power MOSFET drain output. The internal start-up bias current is drawn from this pin through a switched high-voltage current source. Internal current limit sense point for drain current. CONTROL (C) Pin: ...

Page 5

TOPSwitch-GX Family Functional Description Like TOPSwitch, TOPSwitch- integrated switched mode power supply chip that converts a current at the control input to a duty cycle at the open drain output of a high voltage power MOSFET. During normal ...

Page 6

TOP242-250 CONTROL (C) Pin Operation 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 feedback signal from the supply ...

Page 7

This oscillator sets the pulse width modulator/current limit latch at the beginning of each cycle. The nominal switching frequency of 132 kHz was chosen ...

Page 8

TOP242-250 required can be used to take advantage of the lower R higher efficiency/smaller heat sinking requirements. With a second resistor connected between the EXTERNAL CURRENT LIMIT (X) pin ( package) or MULTI- FUNCTION (M) pin (P ...

Page 9

DC from 78% (typical voltage slightly higher than the UV threshold to 30% (typical) at the OV threshold (see Figure 11). Limiting DC at higher line voltages helps prevent transformer MAX saturation due ...

Page 10

TOP242-250 Bandgap Reference All critical TOPSwitch-GX internal voltages are derived from a temperature-compensated bandgap reference. This reference is also used to generate a temperature-compensated current reference, which is trimmed to accurately set the switching frequency, MOSFET gate drive current, current ...

Page 11

DC reduction, the vertical axis represents the magnitude of MAX the DC . Line feed-forward with DC MAX maximum duty cycle from 78 L(DC) (+225 µA). 38 EXTERNAL CURRENT LIMIT (X) Pin Operation (Y, R ...

Page 12

TOP242-250 X Pin (Enabled) Output MOSFET Switching (Disabled) I (Default) LIMIT Current Limit DC (78.5%) MAX Maximum Duty Cycle V BG Pin Voltage -250 -200 -150 X and L Pins ( Package) and M Pin (P or ...

Page 13

CONTROL (C) EXTERNAL CURRENT LIMIT (X) LINE-SENSE (L) Figure 12a. LINE-SENSE (L), and EXTERNAL CURRENT LIMIT (X) Pin Input Simplified Schematic. CONTROL (C) MULTI-FUNCTION (M) Figure 12b. MULTI-FUNCTION (M) Pin Input Simplified Schematic and F Package TOPSwitch-GX 240 ...

Page 14

TOP242-250 Typical Uses of FREQUENCY (F) PIN + DC D Input CONTROL Voltage Figure 13. Full Frequency Operation (132 kHz). Figure 15. Half Frequency Standby Mode (For High Standby 14 O 11/ Input Voltage ...

Page 15

Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) P ins + DC Input Voltage D L CONTROL Figure 16. Three Terminal Operation (LINE-SENSE and EXTERNAL CURRENT LIMIT Features Disabled. FREQUENCY Pin Tied to SOURCE ...

Page 16

TOP242-250 Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins (cont output or can be replaced by a manual switch Input CONTROL Voltage KΩ - Figure 22. Active-on ...

Page 17

Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins (cont MΩ Input CONTROL Voltage kΩ Figure 28. Line-Sensing and Externally Set Current Limit. Typical Uses ...

Page 18

TOP242-250 Typical Uses of MULTI-FUNCTION (M) Pin (cont Input Voltage D M CONTROL Figure 34. Externally Set Current Limit (Not Normally Required-See M Pin Operation Description output or can be replaced by ...

Page 19

Typical Uses of MULTI-FUNCTION (M) Pin (cont output or can be replaced by a manual switch. DC Input Voltage CONTROL ON/OFF 47 kΩ Figure 38. Active-on Remote ON/OFF with ...

Page 20

TOP242-250 Application Examples A High Efficiency Universal Input Power Supply The circuit shown in Figure 41 takes advantage of several of the TOPSwitch-GX features to reduce system cost and power supply size and to improve efficiency. This design ...

Page 21

This design delivers from an 85 VAC to 265 VAC input ambient of 40 ° small sealed adapter case (4” x 2.15” x 1”). Full load efficiency is 85% ...

Page 22

TOP242-250 A High Efficiency, 250 W, 250-380 VDC Input Power Supply The circuit shown in Figure 43 delivers 250 84% efficiency using a TOP249 from a 250 VDC to 380 VDC input. DC ...

Page 23

Multiple Output 185-265 VAC Input Power Supply Figure 44 shows a multiple output supply typical for high end set-top boxes or cable decoders containing high capacity hard disks for recording. The supply delivers an output power of 45 ...

Page 24

TOP242-250 Processor Controlled Supply Turn On/Off A low cost momentary contact switch can be used to turn the TOPSwitch-GX power on and off under microprocessor control, which may be required in some applications such as printers. The low power remote ...

Page 25

In addition to using a minimum number of components, TOPSwitch-GX provides many technical advantages in this type of application: 1. Extremely low power consumption in the off mode typical at 110 VAC and 160 mW typical at 230 ...

Page 26

TOP242-250 Key Application Considerations TOPSwitch-II vs. TOPSwitch-GX Table 4 compares the features and performance differences between TOPSwitch-GX and TOPSwitch-II. Many of the new features eliminate the need for additional discrete components. Function TOPSwitch-II TOPSwitch-GX Figures Soft-Start N/A* External Current N/A* ...

Page 27

Function TOPSwitch-II TOPSwitch-GX Figures Switching Frequency N/A* Option (Y, R and F Packages) Frequency Jitter N/A* Frequency Reduction N/A* Remote ON/OFF N/A* Synchronization N/A* Thermal Shutdown 125 °C min. Latched Current Limit ±10 °C) Tolerance -8% (0 °C ...

Page 28

TOP242-250 Function TOPSwitch-FX TOPSwitch-GX Light Load Operation Cycle skipping Line Sensing/Exter- Line sensing and nally Set Current externally set current Limit (Y, R and F limit mutually Packages) exclusive (M pin) Current Limit 100% to 40% Programming Range P/G Package ...

Page 29

Input Capacitor The input capacitor must be chosen to provide the minimum DC voltage required for the TOPSwitch-GX converter to maintain regulation at the lowest specified input voltage and maximum output power. Since TOPSwitch-GX has a higher DC TOPSwitch-II, it ...

Page 30

TOP242-250 frequency radiated noise (for example, video noise sensitive applications such as VCR, DVD, monitor, TV, etc.), operating at 66 kHz will reduce snubber loss resulting in better efficiency. Also, in applications where transformer size is not a concern, use ...

Page 31

HV Input Filter Capacitor - S TOP VIEW R1 R2 Figure 47. Layout Consideratiions for TOPSwitch-GX using Package. + Input Filter Capacitor HV - TOPSwitch-GX TOP VIEW R1 Heat Sink Figure 48. Layout Consideratiions for TOPSwitch-GX ...

Page 32

... Design Tools For a discussion on utilizing TOP248, TOP249 and TOP250 in forward converter configurations, please refer to the TOPSwitch-GX Forward Design Methodology Application Note. Up-to-date information on design tools can be found at the Power Integrations website: www.powerint.com Output Filter Capacitors - + DC Out Maximize hatched copper ...

Page 33

DRAIN Voltage .................................. ................ -0 700 V DRAIN Peak Current: TOP242......................................0.72 A TOP243....................................... 1.44 A TOP244..........................................2.16 A TOP245....................................... 2.88 A TOP246..........................................4.32 A TOP247..........................................5.76 A TOP248..........................................7.20 A TOP249..........................................8.64 A TOP250 ........................................10.08 A CONTROL Voltage ................................................ -0 ...

Page 34

TOP242-250 Parameter Symbol CONTROL FUNCTIONS (cont.) Maximum Duty DC Cycle MAX Soft-Start Time t SOFT PWM Gain DC reg PWM Gain Temperature Drift External Bias I Current B CONTROL Current C(OFF) Duty Cycle Dynamic Z Impedance C ...

Page 35

Parameter Symbol SHUTDOWN/AUTO-RESTART (cont.) Auto-Restart V Hysteresis Voltage C(AR)hyst Auto-Restart Duty DC Cycle (AR) Auto-Restart f Frequency (AR) MULTI-FUNCTION (M), LINE-SENSE (L) AND EXTERNAL CURRENT LIMIT (X) INPUTS Line Under- Voltage Threshold I Current and Hys- UV teresis (M or ...

Page 36

TOP242-250 Parameter Symbol MULTI-FUNCTION, LINSE-SENSE AND EXTERNAL CURRENT LIMIT INPUTS (cont.) Maximum Duty Cycle Reduction I or L(DC) Onset Threshold I M(DC) Current Remote OFF DRAIN Supply I D(RMT) Current Remote ON Delay t R(ON) Remote OFF t Setup Time ...

Page 37

Parameter Symbol CIRCUIT PROTECTION (cont.) Self Protection Current Limit I LIMIT (See Note C) Initial Current Limit I INIT Leading Edge t Blanking Time LEB Current Limit t Delay IL(D) Thermal Shut- down Temperature Thermal Shut- down Hysteresis Power-Up Reset ...

Page 38

TOP242-250 Parameter Symbol OUTPUT (cont.) ON-State R Resistance DS(ON) OFF-State Drain I Leakage Current DSS Breakdown BV Voltage DSS Rise Time t R Fall Time t F SUPPLY VOLTAGE CHARACTERISTICS DRAIN Supply Voltage Shunt Regulator V Voltage C(SHUNT) Shunt Regulator ...

Page 39

DRAIN VOLTAGE Figure 50. Duty Cycle Measurement. 120 100 Dynamic 1 = Impedance Slope CONTROL Pin Voltage (V) Figure 51. CONTROL Pin I-V Characteristic Package (X and L Pins) ...

Page 40

TOP242-250 BENCH TEST PRECAUTIONS FOR EVALUATION OF ELECTRICAL CHARACTERISTICS The following precautions should be followed when testing TOPSwitch-GX by itself outside of a power supply. The schematic shown in Figure 53 is suggested for laboratory testing of TOPSwitch-GX. When the ...

Page 41

Figure 55a. Current Limit vs. MULTI-FUNCTION Pin Current (TOP245P/G only). 1.1 1.0 0.9 0.8 0.7 0.6 Typical 0.5 0.4 Measured at 25 °C. 0.3 0 10K ...

Page 42

TOP242-250 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 -250 -200 Figure 56a. Current Limit vs. MULTI-FUNCTION Pin Current (TOP246P/G only). 1.1 1.0 0.9 0.8 0.7 0.6 Typical 0.5 0.4 Measured at 25 °C. 0.3 0 ...

Page 43

Typical Performance Characteristics (cont.) 1.1 1.0 0.9 -50 - 100 125 150 Junction Temperature (°C) Figure 57. Breakdown Voltage vs. Temperature. 1.2 1.0 0.8 0.6 0.4 0.2 0 -50 - 100 125 ...

Page 44

TOP242-250 Typical Performance Characteristics (cont.) 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 0 100 200 LINE-SENSE Pin Current (µA) Figure 63a. LINE-SENSE Pin Voltage vs. Current See 1 Expanded Version 0 -300 -200 ...

Page 45

Typical Performance Characteristics (cont °C T CASE = 100 °C T CASE DRAIN Voltage (V) Figure 67. Output Characteristics. 10000 ...

Page 46

TOP242-250 PART ORDERING INFORMATION TOP 242 11/05 TOPSwitch Product Family GX Series Number Package Identifier G Plastic SMD-8B P Plastic DIP-8B Y Plastic TO-220-7C R Plastic TO-263-7C (available only with TL option) F Plastic ...

Page 47

REF + .461 (11.71) .495 (12.57) .860 (21.84) .880 (22.35) .068 (1.73) MIN .024 (.61) PIN 1 .034 (.86) .050 (1.27) BSC .150 (3.81) BSC .050 (1.27) .050 (1.27) .050 ...

Page 48

TOP242-250 ⊕ .004 (.10) -E- .240 (6.10) .260 (6.60) Pin 1 .367 (9.32) -D- .387 (9.83) .125 (3.18) .145 (3.68) -T- SEATING PLANE .100 (2.54) BSC .048 (1.22) .053 (1.35) .014 (.36) ⊕ .010 ...

Page 49

Ref .024 (0.61) .034 (0.86) .315 (8.00) .380 (9.65) .638 (16.21) .050 (1.27) .038 (0.97) TO-263-7C .245 (6.22) MIN .225 (5.72) MIN .580 (14.73) ...

Page 50

TOP242-250 .390 (9.91) .420 (10.67) .795 (20.18) REF. PIN 1 .050 (1.27) BSC .150 (3.81) BSC .050 (1.27) .050 (1.27) .050 (1.27) .200 (5.08) .100 (2.54) PIN 1 .150 (3.81) F07C MOUNTING HOLE PATTERN 50 O 11/05 TO-262-7C .055 (1.40) ...

Page 51

Revision Notes Added R package (D2PAK). 2) Corrected abbreviations (s = seconds). 3) Corrected x-axis units in Figure 11 (µA). 4) Added missing external current limit resistor in Figure Corrected spelling. 6) Added ...

Page 52

... For the latest updates, visit our website: www.powerint.com Power Integrations reserves the right to make changes to its products at any time to improve reliability or manufacturability. Power Integrations does not assume any liability arising from the use of any device or circuit described herein. POWER INTEGRATIONS MAKES NO WARRANTY HEREIN AND SPECIFICALLY DISCLAIMS ALL WARRANTIES INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT OF THIRD PARTY RIGHTS ...

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