LNK626DG-TL Power Integrations, LNK626DG-TL Datasheet

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LNK626DG-TL

Manufacturer Part Number
LNK626DG-TL
Description
IC OFFLINE SWIT CV/CC HV 8SOIC
Manufacturer
Power Integrations
Series
LinkSwitch®-CVr
Datasheets

Specifications of LNK626DG-TL

Output Isolation
Isolated
Frequency Range
93 ~ 106kHz
Voltage - Output
700V
Power (watts)
17W
Operating Temperature
-40°C ~ 150°C
Package / Case
8-SOIC (0.154", 3.90mm Width) 7 leads
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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LNK632DG
LinkSwitch-II Family
Energy-Efficient, Accurate CV Switcher With CC Control
for Adapters and Chargers
Product Highlights
Dramatically Simplifies CV Converters
Advanced Performance Features
Advanced Protection/Safety Features
EcoSmart
Green Package
Applications
Description
The LNK632DG dramatically simplifies low power CV/CC charger
designs by eliminating an optocoupler and secondary control
circuitry. The device uses an ON/OFF control technique to provide
very tight output voltage regulation, in addition to output current
control ideal for battery charging applications. The combination of
proprietary IC trimming and E-Shield
techniques enables Clampless designs with the LNK632DG when
an external bias circuit is used.
The device incorporates a 700 V power MOSFET, a novel ON/OFF
control state machine, a high voltage switched current source for
self biasing, frequency jittering, cycle-by-cycle current limit and
hysteretic thermal shutdown circuitry onto a monolithic IC.
www.powerint.com
Eliminates optocoupler and all secondary CV/CC control
circuitry
Eliminates all control loop compensation circuitry
Enables Clampless
Compensates for cable voltage drop
Compensates for external component temperature variations
Very tight IC parameter tolerances using proprietary trimming
technology
Frequency jittering greatly reduces EMI filter cost
Auto-restart protection reduces power delivered by about 85%
for output short circuit and control loop faults (open and
shorted components)
Hysteretic thermal shutdown – automatic recovery reduces
power supply returns from the field
Easily meets all global energy efficiency regulations with no
added components
No-load consumption down to <30 mW at 230 VAC input with
bias winding
ON/OFF control provides constant efficiency down to very light
loads – ideal for EISA and ENERGY STAR regulations
No current sense resistors – maximizes efficiency
Halogen free and RoHS compliant package
Chargers for cell/cordless phones, PDAs, MP3/portable audio
devices, adapters, etc.
®
– Energy Efficient
designs
®
transformer construction
Figure 1.
Output Power Table
Table 1.
Notes:
1. Minimum continuous power in a typical non-ventilated enclosed adapter measured
2. Maximum practical continuous power in an open frame design with adequate
3. Packages: D: SO-8C.
LNK632DG
at +50 °C ambient.
heatsinking, measured at 50 °C ambient.
Product
V
O
Output Power Table.
HV DC Input
Wide Range
Typical Application – Not a Simplified Circuit (a) and Output
Characteristic Envelope (b).
3
LNK632DG
(a) Typical application schematic
(b) Output characteristic
Adapter
3.1 W
±5%
1
±18%
85-265 VAC
PI-5292-120908
PI-5346-022509
Open Frame
3.1 W
September 2009
I
O
2

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LNK626DG-TL Summary of contents

Page 1

LNK632DG LinkSwitch-II Family ® Energy-Efficient, Accurate CV Switcher With CC Control for Adapters and Chargers Product Highlights Dramatically Simplifies CV Converters Eliminates optocoupler and all secondary CV/CC control • circuitry Eliminates all control loop compensation circuitry • Enables Clampless designs ...

Page 2

LNK632DG BYPASS (BP/M) + FEEDBACK (FB) t SAMPLE-OUT CABLE DROP COMPENSATION 6.5 V CONSTANT CURRENT CONTROLLER SOURCE (S) Figure 2 Functional Block Diagram. Pin Functional Description DRAIN (D) Pin: This pin is the power MOSFET drain connection. ...

Page 3

LNK632DG Functional Description The LNK632DG combines a high voltage power MOSFET switch with a power supply controller in one device. Similar to the LinkSwitch-LP and TinySwitch-III it uses a simple ON/OFF control to regulate the output voltage. In addition, the ...

Page 4

LNK632DG Absolute Maximum Ratings (1,5) DRAIN Voltage .................................. ......... ..............-0 700 V DRAIN Peak Current: ...................................... 232 (350) mA Peak Negative Pulsed Drain Current ................... ......... -100 mA Feedback Voltage ................................................. ....... -0 Feedback ...

Page 5

Parameter Symbol Control Functions (cont.) Minimum Switch t ON-Time ON(min) Feedback Pin t Sampling Delay DRAIN Supply Current BYPASS Pin CH1 Charge Current I CH2 BYPASS Pin V Voltage BP BYPASS Pin V Voltage ...

Page 6

LNK632DG Parameter Symbol Output ON-State R Resistance DS(ON) I DSS1 OFF-State Leakage I DSS2 Breakdown BV Voltage DSS DRAIN Supply Voltage Auto-Restart t ON-Time AR-ON Auto-Restart t OFF-Time AR-OFF Open-Loop FB Pin I Current Threshold OL Open-Loop ON-Time NOTES: 1. ...

Page 7

Temperature (°C) Figure 4. Output Frequency vs. Temperature. 1.1 1.0 0.9 -50 - Junction Temperature (°C) Figure 6. Breakdown vs. Temperature. 200 175 25 °C ...

Page 8

LNK632DG + Raise V voltage from 6.2 V, down Raise V until cycle skipping occurs Reduce V until cycle skipping stops ...

Page 9

B 4 4.90 (0.193) BSC A 8 3.90 (0.154) BSC 2 0.10 (0.004 Pin 1 ID 1.27 (0.050) BSC 1.25 - 1.65 1.35 (0.053) 1.75 (0.069) (0.049 - 0.065) 0.10 (0.004) 0.25 (0.010) Reference Solder Pad ...

Page 10

... The products and applications illustrated herein (including transformer construction and circuits external to the products) may be covered by one or more U.S. and foreign patents, or potentially by pending U.S. and foreign patent applications assigned to Power Integrations. A complete list of Power Integrations patents may be found at www.powerint.com. Power Integrations grants its customers a license under certain patent rights as set forth at http://www ...

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