TNY254P Power Integrations, TNY254P Datasheet

IC OFFLINE SWIT OTP OCP HV 8DIP

TNY254P

Manufacturer Part Number
TNY254P
Description
IC OFFLINE SWIT OTP OCP HV 8DIP
Manufacturer
Power Integrations
Series
TinySwitch®r
Datasheet

Specifications of TNY254P

Output Isolation
Isolated
Frequency Range
40 ~ 48kHz
Voltage - Output
700V
Power (watts)
4W
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)
68 %
Switching Frequency
44 KHz
Supply Current
140 uA
Operating Temperature Range
- 40 C to + 150 C
Mounting Style
Through Hole
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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TNY253/254/255
TinySwitch
Energy Efficient, Low Power Off-line Switchers
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 devices
• No bias winding – simpler, lower cost transformer
• Allows simple RC type EMI filter for up to 2 W from
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, standby power supplies
High Performance at Low Cost
• High voltage powered – ideal for charger applications
• Very high loop bandwidth provides excellent transient
• Current limit operation rejects line frequency ripple
• Glitch free output when input is removed
• Built-in current limit and thermal protection
• 44 kHz operation (TNY253/4) with snubber clamp
• Operates with optocoupler or bias winding feedback
Description
The TinySwitch family uses a breakthrough design to provide
the lowest cost, high efficiency, off-line switcher solution in the
0 to 10 W range. These devices integrate a 700 V power
MOSFET, oscillator, high voltage switched current source,
current limit and thermal shutdown circuitry. They start-up and
run on power derived from the DRAIN voltage, eliminating the
need for a transformer bias winding and the associated circuitry.
And yet, they consume only about 80 mW at no load, from
265 VAC input. A simple ON/OFF control scheme also
eliminates the need for loop compensation.
The TNY253 and TNY254 switch at 44 kHz to minimize EMI
and to allow a simple snubber clamp to limit DRAIN spike
integrated/hybrid solutions
universal input or 4 W from 115 VAC input
200 mW European cell phone requirements for standby
compared to bulky linear adapters
for PC, TV and VCR, utility meters, and cordless phones.
response and fast turn on with practically no overshoot
reduces EMI and video noise in TVs & VCRs
Product Highlights
®
Family
Figure 1. Typical Standby Application.
Table 1. *Please refer to the Key Application Considerations section
for details.
voltage. At the same time, they allow use of low cost EE16 core
transformers to deliver up to 5 W. The TNY253 is identical to
TNY254 except for its lower current limit, which reduces
output short circuit current for applications under 2.5 W.
TNY255 uses higher switching rate of 130 kHz to deliver up to
10 W from the same low cost EE16 core for applications such
as PC standby supply. An EE13 or EF13 core with safety
spaced bobbin can be used for applications under 2.5 W.
Absence of a bias winding eliminates the need for taping/
margins in most applications, when triple insulated wire is used
for the secondary. This simplifies the transformer construction
and reduces cost.
NUMBER
TNY253P
TNY253G
TNY254P
TNY254G
TNY255P
TNY255G
ORDER
HV DC Input
Wide-Range
PART
TinySwitch SELECTION GUIDE
+
PACKAGE
DIP-8
SMD-8
SMD-8
DIP-8
SMD-8
DIP-8
D
S
TinySwitch
EN
BP
for Lowest System Cost*
230 VAC or
w/Doubler
Recommended Range
115 VAC
4-10 W
0-4 W
2-5 W
DC Output
3.5-6.5 W
PI-2178-022699
85-265
0-2 W
1-4 W
VAC
April 2003
+
®

TNY254P Summary of contents

Page 1

... HV DC Input Figure 1. Typical Standby Application. ORDER PART NUMBER TNY253P TNY253G TNY254P TNY254G TNY255P TNY255G Table 1. *Please refer to the Key Application Considerations section for details. voltage. At the same time, they allow use of low cost EE16 core transformers to deliver The TNY253 is identical to TNY254 except for its lower current limit, which reduces output short circuit current for applications under 2 ...

Page 2

TNY253/254/255 BYPASS 50 A OSCILLATOR CLOCK DC MAX 1 ENABLE Figure 2. Functional Block Diagram. Pin Functional Description DRAIN (D) Pin: Power MOSFET drain connection. Provides internal operating current for both start-up and steady-state operation. BYPASS ...

Page 3

Clock signal (at the beginning of each cycle high, then the power MOSFET is turned on (enabled) for that cycle, otherwise the power MOSFET remains in the ...

Page 4

TNY253/254/255 V EN CLOCK DC MAX I DRAIN V DRAIN Figure 4. TinySwitch Operation at Heavy Load. percentage of cycles will conduct to support the power consumption of the power supply. The response time of TinySwitch ON/OFF control scheme is ...

Page 5

V EN CLOCK DC MAX I DRAIN V DRAIN Figure 6. TinySwitch Operation at Light Load. 130 kHz Switching Frequency (TNY255) The switching frequency (with no cycle skipping) is set at 130 kHz. This allows the TNY255 to deliver 10 ...

Page 6

TNY253/254/255 + Optional 120-375 VDC 0.01 µ Figure 9. 1 Standby Circuit using TNY253. R1 150 Optional C1 240-375 0.01 F VDC 1 kV Figure 10 Standby Supply ...

Page 7

... Figure 11 shows a 5.2 V, 3.6 W cellular phone charger circuit that uses the TNY254 and provides constant voltage and constant current output over an universal input (85 to 265 VAC) range. The AC input is rectified and filtered D4, C1 and FR201 2200 pF 100 1N4937 TinySwitch TNY254P LTV817 S 2N3904 Safety TinySwitch 2 200 V TNY253P BP C4 ...

Page 8

TNY253/254/255 is provided by L2 and C6. The output voltage is determined by the sum of the optocoupler U2 LED forward drop (~ 1 V) and Zener diode VR1 voltage. The resistor R8, maintains a bias current through the Zener ...

Page 9

Input Filter Capacitor + HV – S TOP VIEW TinySwitch Figure 13. Recommended PC Layout for the TinySwitch. accommodated by rating the output diode to handle the short circuit current. The short circuit current can be ...

Page 10

TNY253/254/255 DRAIN Voltage ....................................... - 0 700 V Peak DRAIN Current (TNY253/4) ........................400 mA Peak DRAIN Current (TNY255) ...........................530 mA ENABLE Voltage ........................................ - 0 ENABLE Current ...................................................100 mA BYPASS Voltage .......................................... -0.3 V ...

Page 11

Parameter Symbol CIRCUIT PROTECTION Current Limit I LIMIT Note F Initial Current I Limit INIT Leading Edge t Blanking Time LEB Current Limit t Delay ILD Thermal Shutdown Temperature Thermal Shutdown Hysteresis OUTPUT ON-State R DS(ON) Resistance OFF-State Drain I ...

Page 12

TNY253/254/255 Parameter Symbol OUTPUT (cont.) DRAIN Supply Voltage Output Enable t Delay EN Output Disable t Setup Time DST NOTES: A. For a threshold with a negative value, negative hysteresis is a decrease in magnitude of the corresponding threshold. B. ...

Page 13

HV 90% DRAIN VOLTAGE 10 Figure 15. TinySwitch Duty Cycle Measurement. Typical Performance Characteristics BREAKDOWN vs. TEMPERATURE 1.1 1.0 0.9 -50 - 100 125 150 Junction Temperature (°C) DC MAX ...

Page 14

TNY253/254/255 Typical Performance Characteristics (Continued) CURRENT LIMIT vs. TEMPERATURE 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -50 - Junction Temperature (°C) TNY254 CURRENT LIMIT vs. di/dt 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 ...

Page 15

Typical Performance Characteristics (Continued) C OSS vs. DRAIN VOLTAGE 100 200 DRAIN Voltage (V) DIM inches mm A 0.367-0.387 9.32-9.83 B 0.240-0.260 6.10-6.60 C 0.125-0.145 3.18-3.68 G 0.015-0.040 0.38-1.02 H 0.120-0.140 3.05-3.56 J1 0.057-0.068 1.45-1.73 J2 0.014-0.022 ...

Page 16

TNY253/254/255 D S .004 (.10 - G08A .010 (.25 4/03 SMD-8 .046 .060 .060 .046 Pin 1 .086 .186 -D- .286 ...

Page 17

Notes TNY253/254/255 D 17 4/03 ...

Page 18

TNY253/254/255 D 18 4/03 Notes ...

Page 19

Notes TNY253/254/255 D 19 4/03 ...

Page 20

... PATENT INFORMATION 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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