TNY256PN Power Integrations, TNY256PN Datasheet

TNY256PN

Manufacturer Part Number

TNY256PN

Description

IC OFFLINE SWIT OTP UVLO HV 8DIP

Manufacturer

Power Integrations

Series

TinySwitch® Plusr

Datasheet

1.TNY256YN.pdf (20 pages)

Specifications of TNY256PN

Output Isolation

Isolated

Frequency Range

115 ~ 140kHz

Voltage - Output

700V

Power (watts)

10W

Operating Temperature

-40°C ~ 150°C

Package / Case

8-DIP (0.300", 7.62mm)

Output Voltage

5.8 V

Input / Supply Voltage (max)

265 VAC

Input / Supply Voltage (min)

85 VAC

Duty Cycle (max)

69 %

Switching Frequency

130 KHz

Supply Current

255 uA

Operating Temperature Range

- 40 C to + 150 C

Mounting Style

Through Hole

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

596-1171-5
TNY256PN

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Download datasheet (512Kb)

TNY256

TinySwitch

Energy Efficient, Low Power Off-line Switcher

TinySwitch Plus Features

• 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

• 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

• Saves $1 to $4 per year in energy costs (at $0.12/kWHr)

• 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.

integrated/hybrid solutions

200mW European cell phone requirements for standby

compared to bulky linear adapters

Product Highlights

Plus

Figure 1. Typical Standby Application.

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

adapters with minimal heat sinking whereas, the high end of the power

ranges represent open frame power supplies with adequate heat

sinking, both measured at an ambient of 50

Application Considerations section for more details.

TinySwitch Plus

TNY256G

TNY256Y

Wide-Range

HV DC Input

TNY256P

NUMBER

ORDER

–

PART

OUTPUT POWER CAPABILITY*

TO-220-7B

PACKAGE

SMD-8

DIP-8

UV Resistor

Optional

EN/UV

230 VAC or

w/Doubler

115 VAC

8-19 W

8-15 W

C. Please refer to the Key

85-265

DC Output

5-11 W

PI-2363-022699

5-10 W

VAC

July 2001

–

Related parts for TNY256PN

TNY256PN Summary of contents

Page 1

TNY256 TinySwitch Energy Efficient, Low Power Off-line Switcher Product Highlights TinySwitch Plus Features • 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 ...

Page 2

TNY256 BYPASS (BP) LINE UNDER-VOLTAGE OSCILLATOR ENABLE/ UNDER-VOLTAGE 1.5 V (EN/UV) Figure 2. Functional Block Diagram. Pin Functional Description DRAIN (D) Pin: Power MOSFET drain connection. Provides internal operating current for both start-up ...

Page 3

TinySwitch Functional Description TinySwitch combines a high voltage power MOSFET switch with a power supply controller in one device. Unlike conventional PWM (Pulse Width Modulator) controllers, TinySwitch uses a simple ON/OFF control to regulate the output voltage. The TNY256 controller ...

Page 4

TNY256 short open loop condition, TNY256 enters into auto- restart operation. An internal counter clocked by the oscillator gets reset every time the EN/UV pin is pulled low. If the EN/ UV pin is not pulled low for ...

Page 5

V 100 DC-BUS BYPASS 0 400 200 V DRAIN Time (ms) Figure 8. TNY256 Power-up With External Resistor ( Connected to EN/UV Pin. power level at the lowest input voltage, ...

Page 6

TNY256 200 V 100 0 400 300 V 200 100 Time (s) Figure 10. Normal Power-down Timing. During power-down, when an external resistor is used, the power MOSFET will switch for 32 ms after the output loses ...

Page 7

L1 470 1N4005 1N4005 4.7 k 85-265 RF1 C1 C2 VAC 400 V 400 V Fusible D3 D4 1N4005 1N4005 Figure 12. 5 Adapter with Universal Input (85-265 VAC). ...

Page 8

TNY256 Layout Single Point Grounding Use a single point ground connection at the SOURCE pin for the BYPASS pin capacitor and the Input Filter Capacitor (see Figure 13). Primary Loop Area The area of the primary loop that connects the ...

Page 9

DRAIN Voltage ....................................... - 0 700 V Peak DRAIN Current ............................................. 800 mA EN/UV Voltage ............................................ - 0 EN/UV Current ...................................................... 100 mA 1. All voltages referenced to SOURCE Normally limited by ...

Page 10

TNY256 Parameter Symbol CONTROL FUNCTIONS (cont.) BYPASS Pin V Voltage BP BYPASS V Hysteresis BPH EN/UV Pin Line I Under-voltage LUV Threshold CIRCUIT PROTECTION I Current Limit LIMIT Initial Current I Limit INIT Leading Edge t LEB Blanking Time Current ...

Page 11

Parameter Symbol OUTPUT (cont.) DRAIN Supply Voltage Output EN/UV t Delay EN/UV Output Disable t Setup Time DST Auto-Restart t AR ON-Time Auto-Restart DC Duty Cycle AR NOTES: A. For a threshold with a negative value, negative hysteresis is a ...

Page 12

TNY256 D EN/ NOTE: This test circuit is not applicable for current limit or output characteristic measurements. Figure 14. TinySwitch General Test Circuit 90% DRAIN VOLTAGE 10 ...

Page 13

Typical Performance Characteristics BREAKDOWN vs. TEMPERATURE 1.1 1.0 0.9 -50 - 100 125 150 Junction Temperature ( C) CURRENT LIMIT vs. TEMPERATURE 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -50 - Temperature ...

Page 14

TNY256 Typical Performance Characteristics (cont.) C OSS vs. DRAIN VOLTAGE 100 200 400 DRAIN Voltage ( 7/01 DRAIN CAPACITANCE POWER 100 600 0 UNDERVOLTAGE THRESHOLD 80 Power-up* 40 Power-down at ...

Page 15

DIM inches mm A 0.370-0.385 9.40-9.78 B 0.245-0.255 6.22-6.48 C 0.125-0.135 3.18-3.43 G 0.015-0.040 0.38-1.02 H 0.120-0.135 3.05-3.43 J1 0.060 (NOM) 1.52 (NOM) J2 0.014-0.022 0.36-0.56 K 0.010-0.012 0.25-0.30 L 0.090-0.110 2.29-2.79 M 0.030 (MIN) 0.76 (MIN) N 0.300-0.320 7.62-8.13 ...

Page 16

TNY256 .400 (10.16) .146 (3.71) .415 (10.54) .156 (3.96) + .860 (21.84) .880 (22.35) PIN 1 .050 (1.27) BSC .150 (3.81) BSC .050 (1.27) .050 (1.27) .050 (1.27) .200 (5.08) PIN 1 .150 (3.81) Y07B MOUNTING HOLE PATTERN C 16 ...

Page 17

Notes TNY256 C 17 7/01 ...

Page 18

TNY256 C 18 7/01 Notes ...

Page 19

Notes TNY256 C 19 7/01 ...

Page 20

... 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. ...

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