TNY256 POWERINT | Alldatasheet

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Technical content

Energy Efficient, Low Power Off-line Switcher July 2001 Figure 1. Typical Standby Application.

230 VAC or

115 VAC

  • Extended power range
  • Fully integrated auto-restart reduces short circuit current
  • Line under-voltage sense eliminates turn-off glitches
  • Frequency jittering dramatically reduces EMI (5 to 10 dB)
  • TO-220 package option Lowest Cost, Low Power Switcher Solution
  • Lower cost than RCC, discrete PWM and other integrated/hybrid solutions
  • Cost effective replacement for bulky linear adapters
  • Lowest component count
  • Simple ON/OFF control – no loop compensation components
  • No bias winding – simpler, lower cost transformer
  • Designed to work with low cost external components Extremely Energy Efficient
  • Consumes only 30/60 mW at 115/230 VAC with no load
  • Meets Blue Angel, Energy Star, Energy 2000 and 200mW European cell phone requirements for standby
  • Saves $1 to $4 per year in energy costs (at $0.12/kWHr) compared to bulky linear adapters
  • Ideal for cellular phone chargers and adapters High Performance at Low Cost
  • High voltage powered – ideal for charger applications
  • High bandwidth provides fast turn on with no overshoot
  • Current limit operation rejects line frequency ripple
  • Built-in current limit and thermal protection

Description

The TNY256 extends the power range of the TinySwitch family of energy efficient, low power off-line switchers. TinySwitch devices use a breakthrough design to provide the lowest cost, high efficiency, off-line switching solution for low power applications. They integrate a 700 V power MOSFET, oscillator, high voltage switched current source, current limit and thermal shutdown circuitry into a single, monolithic device. The devices start-up and operate on power derived from the DRAIN voltage, eliminating the need for a transformer bias winding and associated circuitry. TinySwitch's low operating current allows power supply no-load consumption to be kept under 100 mW, even at 265 VAC input. TNY256P OUTPUT POWER CAPABILITY* PACKAGE DIP-8 SMD-8 TNY256G 5-10 W8-15 W The TinySwitch Plus incorporates auto-restart, line under-voltage sense, and frequency jittering features. The auto-restart circuit safely limits output power during fault conditions such as output short or open loop. The auto-restart circuit is fully integrated and does not require external timing components. The line under- voltage sense threshold can be externally programmed using a line sense resistor. During start-up, this feature keeps the TNY256 off until the input line voltage reaches the under-voltage threshold. When the input line voltage is removed, the line under-voltage circuit prevents auto-restart attempts after the output goes out of regulation. This eliminates power down glitches caused by the slow discharge of input storage capacitors present in applications such as standby supplies. A single resistor is used to implement this feature, eliminating what normally takes five to six components. The line sense resistor is optional. The TNY256 operating frequency of 130 kHz is jittered (frequency modulated) to reduce both quasi- peak and average EMI, minimizing filtering costs. **Table 1. * The low end of the power ranges shown represent enclosed** Application Considerations section for more details.

Figure 2. Functional Block Diagram. Figure 3. Pin Configuration. current for both start-up and steady-state operation. internally generated 5.8 V supply. through an external resistor connected to the DC line voltage. detects this and disables the line under-voltage function. Power MOSFET source connection. Primary return.

1.5 V + VTH

1 EN/UV

simple ON/OFF control to regulate the output voltage. functional block diagram with the most important features. indicates the beginning of each cycle. frequency jitter of the TNY256. remainder of the cycle are ignored. optocoupler that is usually connected to this pin.

5.8 V Regulator

pin is the internal supply voltage node for the TinySwitch. high frequency de-coupling and energy storage. MOSFET when the BYPASS pin voltage drops below 5.1 V. back to 5.8 V to enable (turn-on) the power MOSFET. The thermal shutdown circuitry senses the die temperature. oC, at which point it is re-enabled. premature termination of the switching pulse. Figure 4. Frequency Jitter.

Figure 12. 5.5 W AC Adapter with Universal Input (85-265 VAC). through the TL431 voltage reference for proper regulation.

  1. The minimum DC input voltage is 90 V or higher for 85 VAC
  2. A secondary output of 5 V with a Schottky rectifier diode.
  3. The P and G packaged parts are board mounted with source

different from the values shown in Table 1. Application Notes section on our Web site at www.powerint.com.

C TNY256 Operating Junction Temperature 3. 1/16" from case for 5 seconds. ABSOLUTE MAXIMUM RATINGS(1) 1. All voltages referenced to SOURCE, T A = 25 °C. 2. Normally limited by internal circuitry. S1 Open See Note A IEN/UV = -25 µA IEN/UV = 25 µA VEN/UV = 0 V (MOSFET Not Switching) See Note B -68 -50 -28 -15 -10 -5 1.10 1.45 1.80 -58 -35 215 CONTROL FUNCTIONS Output Frequency Maximum Duty Cycle EN/UV Pin Turnoff Threshold Current EN/UV Pin Hysteresis Current EN/UV Pin Voltage EN/UV Short- Circuit Current DRAIN Supply Current BYPASS Pin Charge Current kHz µA µA V µA µA µA mA mA Min Typ Max fOSC DCMAX IDIS IHYS VEN IENSC IS1 IS2 ICH1 ICH2 Parameter Symbol (Unless Otherwise Specified) See Figure 14 Conditions 130 255 -5.50 -4.10 EN/UV Open (MOSFET Switching) See Note B, C TJ = 25 °C See Figure 4 UnitsSOURCE = 0 V; TJ = -40 to 125 °C TJ = -40 °C to 125 °C TJ = 125 °C -52 VEN/UV = 0 V, TJ = -40 °C to 125 °C VEN/UV = 0 V, TJ = 125 °C -45 VBP = 0 V, TJ = 25 °C See Note D, E VBP = 4 V, TJ = 25 °C See Note D, E 170 2.70 -40 5.0 Average Peak-Peak Jitter 115 140 63 69 3.8 6.2 -68 -41 1.85 3.25 -58 -25 300 -3.75-7.50 -6.00 -2.25 P/G Package: 1. Free standing with no heatsink. 2. Measured at tab closest to plastic interface or source pin. 3. Soldered to 0.36 sq. inch (232mm 2), 2oz (610 gm/m2) copper clad. 4. Soldered to 1 sq. inch (645mm2), 2oz. (610 gm/m2) copper clad THERMAL IMPEDANCE

C TNY256 See Note D TJ = 25 °C See Figure 17 TJ = 25 °C Conditions Parameter Symbol SOURCE = 0 V; TJ = -40 to 125 °C See Figure 14 (Unless Otherwise Specified) VBP VBPH ILUV ILIMIT IINIT tLEB tILD RDS(ON) IDSS BVDSS tR tF mA mA ns ns Ω µA V ns ns BYPASS Pin Voltage BYPASS Hysteresis EN/UV Pin Line Under-voltage Threshold Current Limit Initial Current Limit Leading Edge Blanking Time Current Limit Delay Thermal Shutdown Temperature Thermal Shutdown Hysteresis ON-State Resistance OFF-State Leakage Breakdown Voltage Rise Time Fall Time Min Typ Max Units CONTROL FUNCTIONS (cont.) VBP = 6.2 V, VEN/UV = 0 V, VDS = 560 V, TJ = 125 °C TJ = 25 °C TJ = 100 °C Measured in a Typical Flyback Converter Application. VBP = 6.2 V, VEN/UV = 0 V, IDS = 100 µA, TJ = 25 °C TJ = 25 °C See Note H, I ID = 50 mA 5.85 V6.10 TJ = 25 °C See Note H 0.72 0.850.60 V di/dt = 120 mA/µs, TJ = 25 °C See Note F 5.60 50 5544 µA CIRCUIT PROTECTION 450 500 550 0.65 x lLIMIT(MIN) 170 215 100 150 125 135 145 15.6 18.0 25.7 30.0 700 OUTPUT

C TNY256 NOTES: A. For a threshold with a negative value, negative hysteresis is a decrease in magnitude of the corresponding threshold. B. Total current consumption is the sum of I S1 and IDSS when EN/UV pin is shorted to ground (MOSFET not switching) and the sum of IS2 and IDSS when EN/UV pin is open (MOSFET switching). C. Since the output MOSFET is switching, it is difficult to isolate the switching current from the supply current at the DRAIN. An alternative is to measure the BYPASS pin current at 6.2 V. D. BYPASS pin is not intended for sourcing supply current to external circuitry. E. See typical performance characteristics section for BYPASS pin start-up charging waveform. F. For current limit at other di/dt values, refer to current limit vs. di/dt curve under typical performance characteristics. G. This parameter is derived from characterization. H. This parameter is derived from the change in current limit measured at 5X and 10X of the di/dt shown in the I LIMIT specification. I. Auto-restart on time has the same temperature characteristics as the oscillator (inversely proportional to frequency). Conditions Parameter Symbol SOURCE = 0 V; TJ = -40 to 125 °C See Figure 14 (Unless Otherwise Specified) 0.5 tEN/UV tDST V µs µs ms DRAIN Supply Voltage Output EN/UV Delay Output Disable Setup Time Min Typ Max Units OUTPUT (cont.) Auto-Restart ON-Time Auto-Restart Duty Cycle tAR DCAR 32.0 28.9 35.2Tj = 25 °C See Note I 2416 See Note H

Figure 17. Current Limit Envelope. Figure 15. TinySwitch Duty Cycle Measurement. Figure 16. TinySwitch Output Enable Timing. Figure 14. TinySwitch General Test Circuit.

5 W S2

NOTE: This test circuit is not applicable for current limit or output characteristic measurements.

C TNY256 Typical Performance Characteristics 1.1 1.0 0.9 -50 -25 0 25 50 75 100 125 150 Junction Temperature (°C) Breakdown Voltage (V) (Normalized to 25 °C) BREAKDOWN vs. TEMPERATURE PI-2213-033001 1.2 1.0 0.8 0.6 0.4 0.2 -50 -25 0 25 50 75 100 125 Junction Temperature (°C) FREQUENCY vs. TEMPERATURE PI-2356-011899 Output Frequency 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 240 480 720 960 1200 di/dt in mA/ s CURRENT LIMIT vs. di/dt PI-2234-082798 Current Limit (Normalized to 120 mA/µs) 1.4 Time (ms) BYPASS PIN START-UP WAVEFORM PI-2240-082898 BYPASS Pin Voltage (V) 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -50 -25 0 25 50 75 100 125 Temperature (°C) CURRENT LIMIT vs. TEMPERATURE PI-2354-033001 1.4 Current Limit (A) (Normalized to 25 °C) DRAIN Voltage (V) Drain Current (mA) OUTPUT CHARACTERISTIC 600 500 400 200 100 300 024 6 8 1 0 TCASE=25 °C TCASE=100 °C PI-2385-040901

C TNY256 100 0 600 DRAIN Voltage (V) DRAIN Capacitance (pF) COSS vs. DRAIN VOLTAGE PI-2387-121798 200 400 100 0 200 400 600 DRAIN Voltage (V) Power (mW) DRAIN CAPACITANCE POWER PI-2389-121798 Typical Performance Characteristics (cont.) -40 -20 0 20 40 60 80 100 110 Temperature (°C) Input Voltage (VAC) UNDERVOLTAGE THRESHOLD PI-2358-033001 * 2 MΩ resistor connected to EN/UV pin. ** Load dependant and determined by the level of the device upon entering auto- restart. Power-up* Power-down at 8 W**

C TNY256 PI-2076-040501 A K L G C N DIP-8 D S .004 (.10) -E- -D- B -F- DIM A B C G H K L M N P Q inches 0.370-0.385 0.245-0.255 0.125-0.135 0.015-0.040 0.120-0.135 0.060 (NOM) 0.014-0.022 0.010-0.012 0.090-0.110 0.030 (MIN) 0.300-0.320 0.300-0.390

0.300 BSC

9.40-9.78 6.22-6.48 3.18-3.43 0.38-1.02 3.05-3.43 1.52 (NOM) 0.36-0.56 0.25-0.30 2.29-2.79 0.76 (MIN) 7.62-8.13 7.62-9.91

7.62 BSC

Notes: 1. Package dimensions conform to JEDEC specification MS-001-AB for standard dual in-line (DIP) package .300 inch row spacing (PLASTIC) 8 leads (issue B, 7/85). 2. Controlling dimensions are inches. 3. Dimensions shown do not include mold flash or other protrusions. Mold flash or protrusions shall not exceed .006 (.15) on any side. 4. D, E and F are reference datums on the molded body. H M P Q P08A PI-2077-042601 A L C G08A SMD-8 D S .004 (.10) E S .010 (.25) -E- -D- B -F- M DIM A B C G H K L M P α inches 0.370-0.385 0.245-0.255 0.125-0.135 0.004-0.012 0.036-0.044 0.060 (NOM) 0.048-0.053 0.032-0.037 0.007-0.011 0.010-0.012

0.100 BSC

0.030 (MIN) 0.372-0.388 0-8° mm 9.40-9.78 6.22-6.48 3.18-3.43 0.10-0.30 0.91-1.12 1.52 (NOM) 1.22-1.35 0.81-0.94 0.18-0.28 0.25-0.30

2.54 BSC

0.76 (MIN) 9.45-9.86 0-8° Notes: 1. Package dimensions conform to JEDEC specification MS-001-AB (issue B, 7/85) except for lead shape and size. 2. Controlling dimensions are inches. 3. Dimensions shown do not include mold flash or other protrusions. Mold flash or protrusions shall not exceed .006 (.15) on any side. 4. D, E and F are reference datums on the molded body. K Gα H .004 (.10) P .010 (.25) M A S Heat Sink is 2 oz. Copper As Big As Possible .420 .046 .060 .060 .046 .080Pin 1 .086 .186 .286 Solder Pad Dimensions

C TNY256 PI-2560-101599 Notes: 1. Controlling dimensions are inches. Millimeter dimensions are shown in parentheses. 2. Pin locations start with Pin 1, and continue from left to right when viewed from the front. Pins 2 and 6 are omitted. 3. Dimensions do not include mold flash or other protrusions. Mold flash or protrusions shall not exceed .006 (.15mm) on any side. 4. Minimum metal to metal spacing at the pack- age body for omitted pin locations is .068 inch (1.73 mm). 5. Position of the formed leads to be measured at the mounting plane, .670 inch (17.02 mm) below the hole center. 6. All terminals are solder plated. Y07B PIN 1 PIN 7 MOUNTING HOLE PATTERN .050 (1.27) .150 (3.81) .050 (1.27) .150 (3.81) .050 (1.27) .050 (1.27) PIN 1 .010 (.25) M .467 (11.86) .487 (12.37) .400 (10.16) .156 (3.96) .860 (21.84) .880 (22.35) .028 (.71) .032 (.81) .050 (1.27) BSC .150 (3.81) BSC .108 (2.74) REF PIN 1 & 7 7° TYP. PIN 4 .040 (1.06) .060 (1.52) .190 (4.83) .210 (5.33) .015 (.38) .020 (.51) .095 (2.41) .115 (2.92) .236 (5.99) .260 (6.60) .165 (4.19) .185 (4.70) .040 (1.02) .060 (1.52) .045 (1.14) .055 (1.40) .670 (17.02) REF. .570 (14.48) REF. TO-220-7B

C TNY256 Notes

C TNY256 Notes

C TNY256 Notes

C TNY256 Notes 1) TO-220-7B package information added. 2) ILUV minimum increased to 44 µΑ to reflect production improvements. 1) Updated package references. 2) Corrected spelling. 3) Added Omega symbol (2 MΩ on pg. 8). 4) Corrected storage temperature and θJC and updated nomenclature in parameter table. 5) Corrected spacing and font sizes in figures. Date Revision A B C KOREA Power Integrations International Holdings, Inc. Rm# 402, Handuk Building 649-4 Yeoksam-Dong, Kangnam-Gu, Seoul, Korea Phone: +82-2-568-7520 e-mail: koreasales@powerint.com WORLD HEADQUARTERS AMERICAS Power Integrations, Inc.

5245 Hellyer Avenue

San Jose, CA 95138 USA Main: +1 408-414-9200 Customer Service: Phone: +1 408-414-9665 Fax: +1 408-414-9765 e-mail: usasales@powerint.com For the latest updates, visit our Web site: 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, nor does it convey any license under its patent rights or the rights of others. The PI Logo, TOPSwitch, TinySwitch and EcoSmart are registered trademarks of Power Integrations, Inc. ©Copyright 2001, Power Integrations, Inc. JAPAN Power Integrations, K.K. Keihin-Tatemono 1st Bldg. 12-20 Shin-Yokohama 2-Chome Kohoku-ku, Yokohama-shi Kanagawa 222-0033, Japan Phone: +81-45-471-1021 Fax: +81-45-471-3717 e-mail: japansales@powerint.com TAIWAN Power Integrations International Holdings, Inc. 17F-3, No. 510 Chung Hsiao E. Rd., Sec. 5, Taipei, Taiwan 110, R.O.C. Phone: +886-2-2727-1221 Fax: +886-2-2727-1223 e-mail: taiwansales@powerint.com EUROPE & AFRICA Power Integrations (Europe) Ltd. Centennial Court Easthampstead Road Bracknell Berkshire, RG12 1YQ United Kingdom Phone: +44-1344-462-300 Fax: +44-1344-311-732 e-mail: eurosales@powerint.com CHINA Power Integrations International Holdings, Inc. Rm# 1705, Bao Hua Bldg.

1016 Hua Qiang Bei Lu

Shenzhen, Guangdong 518031 China Phone: +86-755-367-5143 Fax: +86-755-377-9610 e-mail: chinasales@powerint.com INDIA (Technical Support) Innovatech #1, 8th Main Road Vasanthnagar Bangalore, India 560052 Phone: +91-80-226-6023 Fax: +91-80-228-9727 e-mail: indiasales@powerint.com APPLICATIONS HOTLINE World Wide +1-408-414-9660 APPLICATIONS FAX World Wide +1-408-414-9760