IC SWIT OCP CV/CC HV 8DIP

LNK500PN

Manufacturer Part NumberLNK500PN
DescriptionIC SWIT OCP CV/CC HV 8DIP
ManufacturerPower Integrations
SeriesLinkSwitch®
LNK500PN datasheet
 

Specifications of LNK500PN

Output IsolationIsolatedFrequency Range24 ~ 49.5kHz
Voltage - Output700VPower (watts)4W
Operating Temperature-40°C ~ 150°CPackage / Case8-DIP (0.300", 7.62mm), 7 Leads
Output Voltage5.6 VInput / Supply Voltage (max)265 VAC
Input / Supply Voltage (min)85 VACDuty Cycle (max)80 %
Switching Frequency42 KHzSupply Current1.06 mA
Operating Temperature Range- 40 C to + 150 CMounting StyleThrough Hole
For Use With596-1001 - KIT DESIGN ACCELERATOR ADAPTERLead Free Status / RoHS StatusLead free / RoHS Compliant
Other names596-1029-5  
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LNK500
LinkSwitch
Energy Efficient, CV or CV/CC Switcher for
Very Low Cost Adapters and Chargers
Product Highlights
Cost Effective Linear/RCC Replacement
• Lowest cost and component count, constant voltage (CV)
or constant voltage/constant current (CV/CC) solution
• Extremely simple circuit configuration
• Up to 75% lighter power supply reduces shipping cost
• Primary based CV/CC solution eliminates 10 to 20 secondary
components for low system cost
• Combined primary clamp, feedback, IC supply, and loop
compensation functions – minimizes external components
• Fully integrated auto-restart for short circuit and open loop
fault protection – saves external component costs
• 42 kHz operation simplifies EMI filter design
Much Higher Performance Over Linear/RCC
• Universal input range allows worldwide operation
• Up to 70% reduction in power dissipation – reduces enclosure
size significantly
• CV/CC output characteristic without secondary feedback
• System level thermal and current limit protection
• Meets all single point failure requirements with only one
additional clamp capacitor
• Controlled current in CC region provides inherent soft-start
• Optional opto feedback improves output voltage accuracy
®
EcoSmart
– Extremely Energy Efficient
• Consumes <300 mW at 265 VAC input with no load
• Meets California Energy Commission (CEC), Energy Star,
and EU requirements
• No current sense resistors – maximizes efficiency
Applications
• Linear transformer replacement in all ≤3 W applications
• Chargers for cell phones, cordless phones, PDAs, digital
cameras, MP3/portable audio devices, shavers, etc.
• Home appliances, white goods and consumer electronics
• Constant output current LED lighting applications
• TV standby and other auxiliary supplies
Description
LinkSwitch is specifically designed to replace low power linear
transformer/RCC chargers and adapters at equal or lower system
cost with much higher performance and energy efficiency.
LNK500 is a lower cost version of the LNK501 with a wider
tolerance output CC characteristic. LinkSwitch introduces a
revolutionary patented topology for the design of low power
switching power supplies that rivals the simplicity and low
Family
®
V
O
*Estimated tolerance achievable in high volume production
including transformer and other component tolerances.
**See Optional Secondary Feedback section.
Figure 1. Typical Application – Not a Simplified Circuit (a) and
PRODUCT
LNK500
P or G
Table 1. Notes: 1. Output power for designs in an enclosed adapter
measured at 50 °C ambient. 2. See Figure 1 (b) for Min (CV only
designs) and Typ (CV/CC charger designs) power points identified
on output characteristic. 3. Uses higher reflected voltage transformer
designs for increased power capability – see Key Application
Considerations section. 4. For lead-free package options, see Part
Ordering Information.
cost of linear adapters, and enables a much smaller, lighter, and
attractive package when compared with the traditional “brick.”
With efficiency of up to 75% and <300 mW no-load consumption,
a LinkSwitch solution can save the end user enough energy
over a linear design to completely pay for the full power
supply cost in less than one year. LinkSwitch integrates a
700 V power MOSFET, PWM control, high voltage start-up, current
limit, and thermal shutdown circuitry, onto a monolithic IC.
LinkSwitch
D
S
C
Wide Range
HV DC Input
(a)
Example Characteristic
Min
V
Typ
O
(CV only)
(CV/CC)
±5%
±10%
I
O
±25%*
(b)
For Circuit
Shown Above
Secondary Feedback**
Output Characteristic Tolerance Envelopes (b).
OUTPUT POWER TABLE
230 VAC ±15% 85-265 VAC No-Load
4
Min
Typ
Min
2
2
2
3.2 W
4 W
2.4 W 3 W <300 mW
4.3 W
5.5 W 2.9 W 3.5 W <500 mW
DC
Output
(V
)
O
I
O
±25%*
With Optional
PI-3415-021103
1
Input
Typ
2
Power
3
February 2005

LNK500PN Summary of contents

  • Page 1

    LNK500 LinkSwitch Energy Efficient CV/CC Switcher for Very Low Cost Adapters and Chargers Product Highlights Cost Effective Linear/RCC Replacement • Lowest cost and component count, constant voltage (CV) or constant voltage/constant current (CV/CC) solution • Extremely simple circuit ...

  • Page 2

    LNK500 CONTROL SHUNT REGULATOR/ ERROR AMPLIFIER - 5 OSCILLATOR D MAX CLOCK SAW I DCS R E Figure 2. Block Diagram. Pin Functional Description DRAIN (D) Pin: Power MOSFET drain connection. Provides ...

  • Page 3

    LinkSwitch Functional Description The duty cycle, current limit and operating frequency relationships with CONTROL pin current are shown in Figure 4. Figure 5 shows a typical power supply outline schematic which is used below to describe the LinkSwitch operation. Power ...

  • Page 4

    LNK500 The characteristics described above provide an approximate CV/CC power supply output without the need for secondary- side voltage or current feedback. The output voltage regulation is influenced by how well the voltage across C2 tracks the reflected output voltage. ...

  • Page 5

    D1, it would become a switching node, generating additional common mode EMI currents through its internal parasitic capacitance. The feedback configuration in Figure 6 is simply a resistive divider made ...

  • Page 6

    LNK500 However, in laboratory bench tests often more convenient to test the power supply output characteristic starting from a low output current and gradually increasing the load. In this case, the optocoupler feedback regulates the output voltage until ...

  • Page 7

    BR1 RF1 1 A, 600 V 10 Ω Fusible C1 4.7 µF 85-265 400 V VAC Figure 9. 2.75 W Constant Voltage/Constant Current (CV/CC) Charger using LinkSwitch ...

  • Page 8

    LNK500 To aid the designer, the power table reflects these differences. For CV/CC designs the typical power column and for CV designs the minimum power column should be used, respectively. Additionally, figures are based on the following conditions: 1. The ...

  • Page 9

    This includes device and transformer tolerances and line variation. Lower power designs may have poorer constant current linearity. As the output load reduces from the peak power ...

  • Page 10

    ... DS output voltage. If this does not occur then the design should be refined to ensure the overall tolerance limits are met. Design Tools Up to date information on design tools can be found at the Power Integrations website: www.powerint.com LinkSwitch S ...

  • Page 11

    DRAIN Voltage .................................. ................ -0 700 V DRAIN Peak Current......................................400 mA CONTROL Voltage ................................................ -0 CONTROL Current (not to exceed 9 V)............100 mA Storage Temperature .......................................... -65 °C to 150 °C ..................... -40 °C ...

  • Page 12

    LNK500 Parameter Symbol SHUTDOWN/AUTO-RESTART CONTROL Pin I Charging Current C(CH) I Control/Supply/ CD1 Discharge Current I CD2 Auto-Restart V Threshold Voltage C(AR) Auto-Restart V Hysteresis Voltage C(AR)hyst Auto-Restart Duty DC Cycle (AR) Auto-Restart f Frequency (AR) CIRCUIT PROTECTION Self-Protection I ...

  • Page 13

    Parameter Symbol OUTPUT ON-State R Resistance DS(ON) OFF-State Drain I Leakage Current DSS Breakdown Voltage BV DSS DRAIN Supply Voltage NOTES: A. For specifications with negative values, a negative temperature coefficient corresponds to an increase in magnitude with increasing temperature, ...

  • Page 14

    LNK500 Figure 12. LinkSwitch General Test Circuit 5. 1.6 1.2 0.8 0 DRAIN Voltage (V) Figure 13. I vs. DRAIN Voltage. C 120 100 ...

  • Page 15

    Typical Performance Characteristics 1.1 1.0 0.9 -50 - 100 125 150 Junction Temperature (°C) Figure 17. Breakdown Voltage vs. Temperature. 1.200 1.000 0.800 0.600 0.400 0.200 0.000 -50 - 100 125 150 ...

  • Page 16

    LNK500 Typical Performance Characteristics (cont 2/05 300 =25 °C T CASE =100 °C T 250 CASE 200 150 100 Drain Voltage (V) Figure 23. Output Characteristics (DRAIN Current vs. DRAIN Voltage). ...

  • Page 17

    PART ORDERING INFORMATION LNK 500 ⊕ .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) ...

  • Page 18

    LNK500 ⊕ .004 (.10) -E- .240 (6.10) .260 (6.60) Pin 1 .100 (2.54) (BSC) .367 (9.32) -D- .387 (9.83) .125 (3.18) .145 (3.68) .032 (.81) .048 (1.22) .037 (.94) .053 (1.35 2/05 SMD-8B .137 (3.48) MINIMUM ...

  • Page 19

    LNK500 19 D 2/05 ...

  • Page 20

    ... 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 or manufacturability. Power Integrations does not assume any liability arising from the use of any device or circuit described herein. POWER INTEGRATIONS MAKES NO WARRANTY HEREIN AND SPECIFICALLY DISCLAIMS ALL WARRANTIES INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT OF THIRD PARTY RIGHTS ...