LNK363G POWERINT [Power Integrations, Inc.], LNK363G Datasheet

LNK363G

Manufacturer Part Number

LNK363G

Description

Energy Effi cient, Low Power Off-Line Switcher IC

Manufacturer

POWERINT [Power Integrations, Inc.]

Datasheet

1.LNK363G.pdf (16 pages)

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Part Number:

LNK363GN-TL

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POWER

Quantity:

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Optimized for Lowest System Cost

• Proprietary IC trimming and transformer construction

• Fully integrated auto-restart for short circuit and

• Self-biased supply – saves transformer auxiliary winding

• Frequency jittering greatly reduces EMI

• Meets HV creepage requirements between DRAIN and

• Lowest component count switcher solution

Features Superior to Linear/RCC

•

EcoSmart

• Easily meets all global energy efﬁ ciency regulations with

• No-load consumption <300 mW without bias winding at

• ON/OFF control provides constant efﬁ ciency to very

Applications

• Chargers/adapters for cell/cordless phones, PDAs, digital

• Supplies for appliances, industrial systems, and metering

Description

LinkSwitch-XT incorporates a 700 V power MOSFET, oscillator,

simple ON/OFF control scheme, a high voltage switched current

source, frequency jittering, cycle-by-cycle current limit and

LNK362-364

LinkSwitch-XT Family

Energy Efﬁ cient, Low Power

Off-Line Switcher IC

techniques enable Clampless™ designs with LNK362

for lower system cost, component count and higher

efﬁ ciency

open loop protection

and associated bias supply components

all other pins both on the PCB and at the package

no added components

265 VAC input (<50 mW with bias winding)

light loads – ideal for mandatory CEC regulations

cameras, MP3/portable audio players, and shavers

Accurate hysteretic thermal shutdown protection –

automatic recovery improves ﬁ eld reliability

Universal input range allows worldwide operation

Simple ON/OFF control, no loop compensation needed

Eliminates bias winding – simpler, lower cost

transformer

Very low component count – higher reliability and single

side printed circuit board

Auto-restart reduces delivered power by 95% during

short circuit and open loop fault conditions

High bandwidth provides fast turn on with no overshoot

and excellent transient load response

– Extremely Energy Efﬁ cient

Product Highlights

Figure 1. Typical Application with LinkSwitch-XT.

Table 1. Notes: 1. Minimum continuous power in a typical non-

ventilated enclosed adapter measured at 50 °C ambient. 2. Minimum

practical continuous power in an open frame design with adequate

heat sinking, measured at 50 °C ambient. 3. Packages: P: DIP-8B,

G: SMD-8B. Please see Part Ordering Information. 4. See Key

Application Considerations section for complete description of

assumptions.

thermal shutdown circuitry onto a monolithic IC. The start-up

and operating power are derived directly from the DRAIN

pin, eliminating the need for a bias winding and associated

circuitry.

LNK362P or G

LNK363P or G

LNK364P or G

PRODUCT

a) Clampless ﬂ yback converter with LNK362

b) Flyback converter with LNK363/4

HV DC Input

Wide Range

HV DC Input

Wide Range

OUTPUT POWER TABLE

(3)

Adapter

230 VAC ±15%

2.8 W

5.5 W

5 W

LinkSwitch-XT

(1)

LNK363-364

LNK362

Frame

Open

2.8 W

7.5 W

9 W

(2)

Adapter

2.6 W

3.7 W

4 W

85-265 VAC

PI-4086-081005

PI-4061-081005

December 2005

(4)

(1)

Output

Frame

Open

2.6 W

4.7 W

6 W

(2)

Related parts for LNK363G

LNK363G Summary of contents

Page 1

LNK362-364 LinkSwitch-XT Family Energy Efﬁ cient, Low Power Off-Line Switcher IC Product Highlights Optimized for Lowest System Cost • Proprietary IC trimming and transformer construction techniques enable Clampless™ designs with LNK362 for lower system cost, component count and higher efﬁ ...

Page 2

LNK362-364 BYPASS (BP) 6.3 V JITTER OSCILLATOR FEEDBACK (FB) 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 (BP) ...

Page 3

LinkSwitch-XT Functional Description LinkSwitch-XT combines a high voltage power MOSFET switch with a power supply controller in one device. Unlike conventional PWM (pulse width modulator) controllers, a simple ON/OFF control regulates the output voltage. The controller consists of an oscillator, ...

Page 4

LNK362-364 RF1 D1 D2 8.2 Ω 1N4005 1N4005 2 85-265 3.3 µF VRMS 400 1N4005 1N4005 Figure Universal Input CV Adapter Using LNK362. Applications Example Adapter ...

Page 5

The LinkSwitch-XT is completely self-powered from the DRAIN pin, requiring only a small ceramic capacitor C3 connected to the BYPASS pin. No auxiliary winding on the transformer is required. Key Application Considerations LinkSwitch-XT Design Considerations Output Power Table The data ...

Page 6

LNK362-364 TOP VIEW Capacitor OUT - Figure 6. Recommended Printed Circuit Layout for LinkSwitch- Flyback Converter Conﬁ guration. LinkSwitch-XT Layout Considerations See Figure 6 for ...

Page 7

Optocoupler Place the optocoupler physically close to the LinkSwitch-XT to minimize the primary-side trace lengths. Keep the high current, high voltage drain and clamp traces away from the optocoupler to prevent noise pick up. Output Diode For best performance, the ...

Page 8

LNK362-364 DRAIN Voltage .................................. .............-0 700 V Peak DRAIN Current: LNK362................200 mA (375 mA) LNK363/364.........400 mA (750 mA) FEEDBACK Voltage ........................................... -0 FEEDBACK Current ...................................................100 mA BYPASS Voltage.................................................. -0 Storage ...

Page 9

Parameter Symbol CONTROL FUNCTIONS (cont) BYPASS Pin I Supply Current BPSC CIRCUIT PROTECTION I LIMIT Current Limit (See Note E) Power Coefﬁ cient Leading Edge t Blanking Time LEB Current Limit t Delay ILD Thermal Shutdown T ...

Page 10

LNK362-364 Parameter Symbol OUTPUT (cont) Breakdown BV Voltage DSS DRAIN Supply Voltage Output Enable t Delay EN Output Disable t DST Setup Time Auto-Restart t ON-Time AR Auto-Restart Duty DC Cycle AR NOTES: A. Total current consumption is the sum ...

Page 11

Figure 7. LinkSwitch-XT General Test Circuit 90% DRAIN VOLTAGE 10 Figure 8. LinkSwitch-XT Duty Cycle Measurement. 470 Ω MAX (internal ...

Page 12

LNK362-364 Typical Performance Characteristics 1.1 1.0 0.9 -50 - 100 125 150 Junction Temperature (°C) Figure 10. Breakdown vs. Temperature. 1.4 1.2 1.0 0.8 0.6 0.4 0 Temperature (°C) Figure 12. Current ...

Page 13

Typical Performance Characteristics (cont.) PART ORDERING INFORMATION LNK 364 1000 100 Scaling Factors: LNK362 0.5 LNK363 0.8 LNK364 1 100 200 300 400 500 Drain Voltage (V) Figure 16. C vs. Drain Voltage. ...

Page 14

LNK362-364 ⊕ .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 15

LNK362-364 C 15 12/05 ...

Page 16

LNK362-364 Revision Notes B 1) Released Final Data Sheet Corrected Application Example section. 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 ...

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