Datasheet

ManualsBrandsPower Integrations ManualsAC / DC ConvertersAC/DC Converter 12 V TO-220

Figure 1. Typical Flyback Application.

PRODUCT

Adapter

Open

Frame

Open

Frame

OUTPUT POWER TABLE

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.

PI-2632-060200

OUT

TOPSwitch-GX

CONTROL

230 VAC ±15%

Adapter

85-265 VAC

9 W 15 W 6.5 W 10 W

21 W 22 W 11 W 14 W

10 W 22 W 7 W 14 W

13 W 25 W 9 W 15 W

29 W 45 W 17 W 23 W

20 W 45 W 15 W 30 W

16 W 30 W 11 W 20 W

34 W 50 W 20 W 28 W

30 W 65 W 20 W 45 W

37 W 57 W 23 W 33 W

40 W 85 W 26 W 60 W

40 W 64 W 26 W 38 W

60 W 125 W 40 W 90 W

42 W 70 W 28 W 43 W

85 W 165 W 55 W 125 W

43 W 75 W 30 W 48 W

105 W 205 W 70 W 155 W

44 W 79 W 31 W 53 W

120 W 250 W 80 W 180 W

45 W 82 W 32 W 55 W

135 W 290 W 90 W 210 W

Product Highlights

Lower System Cost, High Design Flexibility

• Extended power range to 290 W

• 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

MAX

)

reduction rejects line ripple and limits DC

MAX

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 re-

duce system cost and improve design flexibility, performance

and energy efficiency.

Depending on package type, the TOPSwitch-GX family has

either 1 or 3 additional pins over the standard DRAIN, SOURCE

and CONTROL terminals allowing the following functions: line

sensing (OV/UV, line feedforward/DC max reduction), accu-

rate externally set current limit, remote on/off, and synchroni-

zation 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

MAX

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.

TOP242 P or G

TOP242 R

TOP242 Y or F

TOP243 P or G

TOP243 R

TOP243 Y or F

TOP244 P or G

TOP244 R

TOP244 Y or F

TOP245 R

TOP245 Y or F

TOP246 R

TOP246 Y or F

TOP247 R

TOP247 Y or F

TOP248 R

TOP248 Y or F

TOP249 R

TOP249 Y or F

TOP250 R

TOP250 Y or F

TOP242-250

TOPSwitch

Family

Extended Power, Design Flexible,

EcoSmart

, Integrated

Off-line Switcher

April 2003

Summary of content (52 pages)

PAGE 1
® 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 to 290 W • 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-volt
PAGE 2
TOP242-250 Section List Functional Block Diagram ......................................................................................................................................... 3 Pin Functional Description ........................................................................................................................................ 4 TOPSwitch-GX Family Functional Description ........................................................................................................
PAGE 3
TOP242-250 VC 0 DRAIN (D) CONTROL (C) ZC 1 SHUNT REGULATOR/ ERROR AMPLIFIER + SOFT START 5.8 V 4.8 V - INTERNAL SUPPLY - 5.8 V + INTERNAL UV COMPARATOR IFB VI (LIMIT) CURRENT LIMIT ADJUST SOFT START + VBG + VT SHUTDOWN/ AUTO-RESTART EXTERNAL CURRENT LIMIT (X) 1V VBG DCMAX HALF FREQ.
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: Error amplifier and feedback current input pin for duty cycle control. Internal shunt regulator connection to provide internal bias current during normal operation.
PAGE 5
TOP242-250 TOPSwitch-GX Family Functional Description Three terminals, FREQUENCY, LINE-SENSE, and EXTERNAL CURRENT LIMIT (available in Y, R or F package) or one terminal MULTI-FUNCTION (available in P or G Package) have been added to implement some of the new functions. These terminals can be connected to the SOURCE pin to operate the TOPSwitch-GX in a TOPSwitch-like three terminal mode.
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 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 SOURCE pins is required to supply the instantaneous gate drive current.
PAGE 7
oscillator sets the pulse width modulator/current limit latch at the beginning of each cycle. The nominal switching frequency of 132 kHz was chosen to minimize transformer size while keeping the fundamental EMI frequency below 150 kHz. The FREQUENCY pin (available only in Y, R or F package), when shorted to the CONTROL pin, lowers the switching frequency to 66 kHz (half frequency) which may be preferable in some cases such as noise sensitive video applications or a high efficiency standby mode.
PAGE 8
TOP242-250 CURRENT LIMIT (X) pin (Y, R or F package) or MULTIFUNCTION (M) pin (P or G package) and the rectified DC high voltage bus, the current limit is reduced with increasing line voltage, allowing a true power limiting operation against line variation to be implemented. When using an RCD clamp, this power limiting technique reduces maximum clamp voltage at high line. This allows for higher reflected voltage designs as well as reducing clamp dissipation.
PAGE 9
TOP242-250 prevent transformer saturation due to large load transients in forward converter applications. DCMAX of 38% at the OV threshold was chosen to ensure that the power capability of the TOPSwitch-GX is not restricted by this feature under normal operation.
PAGE 10
TOP242-250 is also used to generate a temperature-compensated current reference which is trimmed to accurately set the switching frequency, MOSFET gate drive current, current limit, and the line OV/UV thresholds. TOPSwitch-GX has improved circuitry to maintain all of the above critical parameters within very tight absolute and temperature tolerances.
PAGE 11
TOP242-250 Using Feature Pins FREQUENCY (F) Pin Operation The FREQUENCY pin is a digital input pin available in the Y, R or F package only. Shorting the FREQUENCY pin to SOURCE pin selects the nominal switching frequency of 132 kHz (Figure 13) which is suited for most applications.
PAGE 12
TOP242-250 MULTI-FUNCTION PIN TABLE* ▲ Figure Number 31 32 Under-Voltage ✔ ✔ Overvoltage ✔ Line Feed Forward (DCMAX) ✔ Three Terminal Operation 30 33 34 35 36 37 38 39 40 ✔ ✔ ✔ ✔ ✔ ✔ Overload Power Limiting ✔ External Current Limit ✔ ✔ Remote ON/OFF ✔ ✔ ✔ ✔ ✔ ✔ *This table is only a partial list of many MULTI-FUNCTION pin configurations that are possible. General Information & Table of Contents Table 3. Typical MULTI-FUNCTION Pin Configurations.
PAGE 13
TOP242-250 M Pin X Pin L Pin IREM(N) IOV IUV (Enabled) Output MOSFET Switching (Disabled) Disabled when supply output goes out of regulation I ILIMIT (Default) Current Limit I DCMAX (78.5%) Maximum Duty Cycle I -22 µA -27 µA VBG + VTP VBG Pin Voltage -250 -200 -150 -100 -50 0 50 100 150 200 250 300 350 400 I X and L Pins (Y, R or F Package) and M Pin (P or G Package) Current (µA) Note: This figure provides idealized functional characteristics with typical performance values.
PAGE 14
TOP242-250 Y, R and F Package CONTROL Pin TOPSwitch-GX 240 µA (Negative Current Sense - ON/OFF, Current Limit Adjustment) VBG + VT EXTERNAL CURRENT LIMIT (X) (Voltage Sense) LINE-SENSE (L) VBG 1V (Positive Current Sense - Under-Voltage, Overvoltage, ON/OFF Maximum Duty Cycle Reduction) General Information & Table of Contents 400 µA Product Selector Guide PI-2634-010802 1 Data Sheets 2 Application Notes 3 Design Ideas 4 Design Tools 5 Quality and Reliability 6 Figure 12a.
PAGE 15
TOP242-250 Typical Uses of FREQUENCY (F) Pin + DC Input Voltage + DC Input Voltage D CONTROL C S D CONTROL C S F F - - PI-2655-071700 PI-2654-071700 Figure 13. Full Frequency Operation (132 kHz). Figure 14. Half Frequency Operation (66 kHz). + DC Input Voltage QS can be an optocoupler output. D CONTROL C S - STANDBY F RHF 20 kΩ QS 47 kΩ 1 nF PI-2656-040501 Figure 15. Half Frequency Standby Mode (For High Standby Efficiency).
PAGE 16
TOP242-250 Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins + + CLXS F VUV = IUV x RLS VOV = IOV x RLS RLS D 2MΩ DC Input Voltage DC Input Voltage L D C S CONTROL D DCMAX@100 VDC = 78% DCMAX@375 VDC = 38% L D CONTROL C C S - X For RLS = 2 MΩ VUV = 100 VDC VOV = 450 VDC F S - PI-2618-040501 PI-2617-050100 General Figure Information & Table of Contents 17. Line-Sensing for Under-Voltage, Overvoltage and Figure 16.
PAGE 17
TOP242-250 Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins (cont.) + QR can be an optocoupler output or can be replaced by a manual switch. QR can be an optocoupler output or can be replaced by a manual switch. + QR ON/OFF RMC 47 kΩ DC Input Voltage DC Input Voltage D CONTROL C 45 kΩ L D CONTROL S C X ON/OFF QR 47 kΩ - S - PI-2621-040501 PI-2625-040501 Figure 23. Active-off Remote ON/OFF. Maximum Duty Cycle will be reduced. Figure 22.
PAGE 18
TOP242-250 Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins (cont.) VUV = IUV x RLS VOV = IOV x RLS + 2 MΩ RLS DC Input Voltage CONTROL DCMAX@100 VDC = 78% DCMAX@375 VDC = 38% C S - L X RIL 12 kΩ QR can be an optocoupler output or can be replaced by a manual switch. For RLS = 2 MΩ VUV = 100 VDC VOV = 450 VDC D + DC Input Voltage For RIL = 12 kΩ ILIMIT = 69% See fig.
PAGE 19
TOP242-250 Typical Uses of MULTI-FUNCTION (M) Pin + + C S S VUV = IUV x RLS VOV = IOV x RLS M RLS D DC Input Voltage D M C S S D DC Input Voltage D S DCMAX@100 VDC = 78% DCMAX@375 VDC = 38% M CONTROL CONTROL C C S - For RLS = 2 MΩ VUV = 100 VDC VOV = 450 VDC 2 MΩ S PI-2508-081199 Figure 30. Three Terminal Operation (MULTI-FUNCTION Features Disabled). + PI-2509-040501 Figure 31. Line Sensing for Undervoltage, Over-Voltage and Line Feed Forward.
PAGE 20
TOP242-250 Typical Uses of MULTI-FUNCTION (M) Pin (cont.) + + QR can be an optocoupler output or can be replaced by a manual switch. QR can be an optocoupler output or can be replaced by a manual switch. QR DC Input Voltage DC ON/OFF Input 47 kΩ Voltage M D RMC M D CONTROL CONTROL C QR 45 kΩ C ON/OFF 47 kΩ S - S PI-2519-040501 Figure 36. Active-on (Fail Safe) Remote ON/OFF. PI-2522-040501 General Figure Information & Table of Contents 37. Active-off Remote ON/OFF.
PAGE 21
TOP242-250 provides line sensing, setting UV at 100 VDC and OV at 450 VDC. The extended maximum duty cycle feature of TOPSwitch-GX (guaranteed minimum value of 75% vs. 64% for TOPSwitch-II) allows the use of a smaller input capacitor (C1). The extended maximum duty cycle and the higher reflected voltage possible with the RCD clamp also permit the use of a higher primary to secondary turns ratio for T1 which reduces the peak reverse voltage experienced by the secondary rectifier D8.
PAGE 22
TOP242-250 A High Efficiency, Enclosed, 70 W, Universal Adapter Supply The circuit shown in figure 42 takes advantage of several of the TOPSwitch-GX features to reduce cost, power supply size and increase efficiency. This design delivers 70 W at 19 V, from an 85 to 265 VAC input, at an ambient of 40 °C, in a small sealed adapter case (4” x 2.15” x 1”). Full load efficiency is 85% at 85 VAC rising to 90% at 230 VAC input. damage.
PAGE 23
TOP242-250 However, VR1 is essential to limit the peak drain voltage during start-up and/or overload conditions to below the 700 V rating of the TOPSwitch-GX MOSFET. A High Efficiency, 250 W, 250 – 380 VDC Input Power Supply The circuit shown in figure 43 delivers 250 W (48 V @ 5.2 A) at 84% efficiency using a TOP249 from a 250 to 380 VDC input. DC input is shown, as typically at this power level a p.f.c.
PAGE 24
TOP242-250 to the relatively large size of C2). An optional MOV (RV1) extends the differential surge protection to 6 kV from 4 kV. Multiple Output, 60 W, 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 W cont./60 W peak (thermally limited) from an input voltage of 185 to 265 VAC. Efficiency at 45 W, 185 VAC is ≥ 75%.
PAGE 25
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 that may be required in some applications such as printers. The low power remote off feature allows an elegant implementation of this function with very few external components as shown in Figure 45.
PAGE 26
TOP242-250 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: 80 mW typical at 110 VAC and 160 mW typical at 230 VAC. This is because in the remote/off mode the TOPSwitch-GX consumes very little power, and the external circuitry does not consume any current (either M, L or X pin is open) from the high voltage DC input. 2.
PAGE 27
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. Other features increase the robustness of design allowing cost savings in the transformer and other power components.
PAGE 28
TOP242-250 Function Remote ON/OFF TOPSwitch-II N/A* TOPSwitch-GX Figures TOPSwitch-GX Advantages Single transistor or optocoupler interface or manual switch 11, 22, 23, 24, 25, 26, 27, 29, 36, 37, 38, 39, 40 • • • • • • • Synchronization Thermal Shutdown N/A* Single transistor or optocoupler interface • • Fast on/off (cycle by cycle) Active-on or active-off control Low consumption in remote off state Active-on control for fail-safe Eliminates expensive in-line on/off switch Allows processor contro
PAGE 29
TOP242-250 Function TOPSwitch-FX P/G Package Current Limits Identical to Y packages TOPSwitch-GX TOP243P or G and TOP244P or G internal current limits reduced Y/R/F Package Current 100% (R and F Limits package N/A*) 90% (for equivalent RDS (ON)) Thermal Shutdown 125 °C min. 70 °C hysteresis 130 °C min.
PAGE 30
TOP242-250 A high VOR is required to take full advantage of the wider DCMAX of TOPSwitch-GX. An RCD clamp provides tighter clamp voltage tolerance than a Zener clamp and allows a VOR as high as 150 V. RCD clamp dissipation can be minimized by reducing the external current limit as a function of input line voltage (see Figure 21 and 35). The RCD clamp is more cost effective than the Zener clamp but requires more careful design (see quick design checklist).
PAGE 31
TOP242-250 switching frequency and soft-start features of TOPSwitch-GX contribute to a smaller transformer when compared to TOPSwitch-II. Standby Consumption Frequency reduction can significantly reduce power loss at light or no load, especially when a Zener clamp is used. For very low secondary power consumption use a TL431 regulator for feedback control. Alternately, switching losses can be significantly reduced by changing from 132 kHz in normal operation to 66 kHz under light load conditions.
PAGE 32
TOP242-250 Maximize hatched copper areas ( ) for optimum heat sinking Safety Spacing Y1Capacitor + HV - Output Rectifier Output Filter Capacitor Input Filter Capacitor PRI BIAS PRI S S D T r a n s f o r m e r SEC GeneralBIAS Information & Table of Contents TOPSwitch-GX TOP VIEW S M S Product Selector Guide C 1 Optocoupler R1 DC + Data Sheets Out - R2 2 PI-2670-042301 Application Notes 3 Design Ideas 4 Design Tools 5 Quality and Reliability Output Rectifier 6 Figure 47.
PAGE 33
TOP242-250 Output Filter Capacitors Solder Side Safety Spacing Component Side Y1Capacitor + TOP VIEW HV PRI Input Filter Capacitor - PRI R1a - 1c BIAS T r a n s f o r m e r SEC D S X L C Optocoupler TOPSwitch-GX - DC + Out Maximize hatched copper areas( ) for optimum heat sinking PI-2734-043001 Figure 49. Layout Considerations for TOPSwitch-GX using R Package. capacitors.
PAGE 34
TOP242-250 ABSOLUTE MAXIMUM RATINGS(1) DRAIN Voltage ............................................ -0.3 to 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 .....
PAGE 35
TOP242-250 Conditions Parameter Symbol (Unless Otherwise Specified) See Figure 53 SOURCE = 0 V; TJ = -40 to 125 °C Min Typ Max 75 78 83 28 38 50 Units CONTROL FUNCTIONS IL ≤ IL (DC) or IM ≤ IM(DC) Maximum Duty Cycle DCMAX IL or IM = 190 µA TOP242-245 IL or IM = 100 µA TOP242-245 IL or IM = 190 µA TOP246-250 IL or IM = 100 µA IC = ICD1 TOP246-250 Soft Start Time tSOFT PWM Gain DCreg CONTROL Current at 0% Duty Cycle Dynamic Impedance % 33 41.3 49.5 60 66.8 73.
PAGE 36
TOP242-250 Conditions Parameter Symbol (Unless Otherwise Specified) See Figure 53 SOURCE = 0 V; TJ = -40 to 125 °C Min Typ Max Units SHUTDOWN/AUTO-RESTART Auto-restart Upper Threshold Voltage VC(AR)U Auto-restart Lower Threshold Voltage VC(AR)L 4.5 4.8 Auto-restart Hysteresis Voltage VC(AR)hyst 0.8 1.0 Auto-restart Duty Cycle Auto-restart Frequency V 5.8 5.1 V V General Information & Table of Contents 4 DC(AR) 8 % Product Selector Guide f(AR) 1.
PAGE 37
TOP242-250 Conditions Parameter Symbol (Unless Otherwise Specified) See Figure 53 SOURCE = 0 V; TJ = -40 to 125 °C Min Typ Max Units MULTI-FUNCTION (M), LINE-SENSE (L) AND EXTERNAL CURRENT LIMIT (X) INPUTS Maximum Duty Cycle Reduction Onset Threshold Current Remote OFF DRAIN Supply Current IL (DC) or IM (DC) ID(RMT) TJ = 25 °C See Figure 70 VDRAIN = 150 V 40 X, L or M Pin Floating L or M Pin Shorted to CONTROL 60 75 0.6 1.0 1.0 1.
PAGE 38
TOP242-250 Conditions Parameter Symbol (Unless Otherwise Specified) See Figure 53 SOURCE = 0 V; TJ = -40 to 125 °C Min Typ Max 5.022 5.40 5.778 Units CIRCUIT PROTECTION Self Protection Current Limit (See Note C) Initial Current Limit TOP249 Y/R/F TJ= 25 °C ILIMIT TOP250 Y/R/F TJ= 25 °C IINIT Internal di/dt=1080 mA/µs Internal di/dt=1260 mA/µs A 5.859 6.30 6.741 0.75 x ≤ 85 VAC (Rectified Line Input) ILIMIT(MIN) 265 VAC 0.
PAGE 39
TOP242-250 Conditions Parameter Symbol (Unless Otherwise Specified) See Figure 53 SOURCE = 0 V; TJ = -40 to 125 °C Min Typ Max Units 1.10 1.85 1.28 2.
PAGE 40
TOP242-250 t2 t1 HV 90% 90% DRAIN VOLTAGE t D= 1 t2 10% 0V PI-2039-033001 Figure 50. Duty Cycle Measurement. DRAIN Current (normalized) PI-1939-091996 CONTROL Pin Current (mA) 100 80 60 40 Dynamic 1 = Impedance Slope 20 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.
PAGE 41
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 DRAIN pin supply is turned on, the part will be in the auto-restart mode. The CONTROL pin voltage will be oscillating at a low frequency between 4.8 and 5.
PAGE 42
TOP242-250 Typical Performance Characteristics (cont.) 1.0 1.0 0.8 0.6 0.4 0.2 0 0.9 -50 -25 0 25 50 -50 -25 75 100 125 150 Junction Temperature (°C) 0 25 50 75 100 125 150 General Information & Temperature Table of Junction (°C) Contents Figure 56. Breakdown Voltage vs. Temperature. Figure 57. Frequency vs. Temperature. Product Selector Guide 0.8 0.6 0.4 PI-2554-033001 1.0 1.2 Current Limit (Normalized to 25 °C) PI-2555-033001 1.
PAGE 43
TOP242-250 Typical Performance Characteristics (cont.) 5.0 4.5 4.0 3.5 3.0 2.5 1.4 -200 µA ≤ IX ≤ -25 µA 1.0 0.8 0.6 0.4 0.2 0 300 400 -240 LINE-SENSE Pin Current (µA) Figure 62a. LINE-SENSE Pin Voltage vs. Current. PI-2542-102700 6 5 4 3 2 See Expanded Version 1 0 -300 -200 -100 0 1.4 -60 0 VM = 1.37 - IMx 1 kΩ -200 µA ≤ IM ≤ -25 µA 1.2 1.0 0.8 0.6 0.4 0.2 0 -300 -250 -200 -150 -100 -50 0 MULTI-FUNCTION Pin Current (µA) MULTI-FUNCTION Pin Current (µA) PI-2562-033001 0.8 0.6 0.4 0.
PAGE 44
TOP242-250 CONTROL Pin Charging Current (mA) 5 4 Scaling Factors: TOP250 1.17 TOP249 1.00 TOP248 0.83 TOP247 0.67 TOP246 0.50 TOP245 0.33 TOP244 0.25 TCASE = 25 °C TOP243 0.17 TCASE = 100 °C TOP242 0.08 3 2 1 1.6 1.2 0.8 0.4 0 0 0 2 4 6 0 8 10 12 14 16 18 20 PI-2646-010802 Scaling Factors: TOP250 1.17 TOP249 1.00 TOP248 0.83 TOP247 0.67 TOP246 0.50 TOP245 0.33 TOP244 0.25 TOP243 0.17 TOP242 0.
PAGE 45
TOP242-250 PART ORDERING INFORMATION TOPSwitch Product Family GX Series Number Package Identifier G Plastic Surface Mount DIP P Plastic DIP Y Plastic TO-220-7C R Plastic TO-263-7C (available only with TL option) F Plastic TO-262 (242, 243 & 244 only) Package/Lead Options Blank Standard Configurations TOP 242 G - TL TL Tape & Reel, (G Package: 1000 min., R Package: 750 min.) TO-220-7C .165 (4.19) .185 (4.70) .390 (9.91) .420 (10.67) .146 (3.71) .156 (3.96) .108 (2.74) REF + .045 (1.
PAGE 46
TOP242-250 DIP-8B ⊕ D S .004 (.10) Notes: 1. Package dimensions conform to JEDEC specification MS-001-AB (Issue B 7/85) for standard dual-in-line (DIP) package with .300 inch row spacing. 2. Controlling dimensions are inches. Millimeter sizes are shown in parentheses. 3. Dimensions shown do not include mold flash or other protrusions. Mold flash or protrusions shall not exceed .006 (.15) on any side. 4. Pin locations start with Pin 1, and continue counter-clockwise to Pin 8 when viewed from the top.
PAGE 47
TOP242-250 TO-263-7C .390 (9.91) .420 (10.67) .245 (6.22) min. .045 (1.14) .055 (1.40) .055 (1.40) .066 (1.68) .326 (8.28) .336 (8.53) .580 (14.73) .620 (15.75) .225 (5.72) min. .208 (5.28) Ref. -ALD #1 .024 (0.61) .034 (0.86) .100 (2.54) Ref. .050 (1.27) .000 (0.00) .010 (0.25) .090 (2.29) .110 (2.79) .010 (0.25) .012 (0.30) .024 (0.61) 0°- 8° .315 (8.00) .380 (9.65) Solder Pad Dimensions .165 (4.19) .185 (4.70) .004 (0.10) .638 (16.21) .128 (3.25) .050 (1.27) .038 (0.97) Notes: 1.
PAGE 48
TOP242-250 TO-262-7C .045 (1.14) .055 (1.40) .390 (9.91) .420 (10.67) .055 (1.40) .066 (1.68) .165 (4.17) .185 (4.70) .326 (8.28) .336 (8.53) 7° TYP. .795 (20.18) REF. .080 (2.03) .120 (3.05) .495 (12.56) REF. .595 (15.10) REF. PIN 2 & 4 PIN 1 & 7 (1.02) General Information & .040 Table of Contents .060 (1.52) .024 (.61) .010 (.25) M .034 (.86) .050 (1.27) BSC PIN 1 .012 (.30) .024 (.61) .040 (1.06) .060 (1.52) Product .190 (4.83) Selector Guide .150 (3.81) BSC 1 .210 (5.33) .050 (1.
PAGE 49
TOP242-250 Notes I 4/03 49
PAGE 50
TOP242-250 Notes General Information & Table of Contents Product Selector Guide 1 Data Sheets 2 Application Notes 3 Design Ideas 4 Design Tools 5 Quality and Reliability 6 Package Information 7 DPA-Switch DC-DC Seminar 8 LinkSwitch & TinySwitch-II AC-DC Seminar 9 TOPSwitch-GX AC-DC Seminar 10 Sales Representatives and Distributors 11 50 I 4/03
PAGE 51
TOP242-250 Revision Notes D E F G H I Date 11/00 7/01 1) 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 25 (RIL). 5) Corrected spelling. 6) Added caption for Table 4. 7) Corrected Breakdown Voltage parameter condition (TJ = 25 °C). 8) Corrected font sizes in figures. 9) Figure 40 replaced. 10) Corrected schematic component values in Figure 44. 1) Corrected Power Table value.
PAGE 52
TOP242-250 For the latest updates, visit our Web site: www.powerint.com PATENT INFORMATION General Information & Table of Contents 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, nor does it convey any license under its patent rights or the rights of others.