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LNK3205P/G/D Scheda tecnica(PDF) 7 Page - Power Integrations, Inc.

Il numero della parte LNK3205P/G/D
Spiegazioni elettronici  Highly Energy Efficient Off-line Switcher IC with Integrated System Level
PDF  28 Pages
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Produttore elettronici  POWERINT [Power Integrations, Inc.]
Homepage  http://www.powerint.com
Logo POWERINT - Power Integrations, Inc.

LNK3205P/G/D Scheda tecnica(HTML) 7 Page - Power Integrations, Inc.

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Rev. Q 06/23
7
LinkSwitch-TN2
www.power.com
Table 2.
Common Circuit Configurations using LinkSwitch-TN2. (continued on next page)
Topology
Basic Circuit Schematic
Key Features
High-Side
Buck –
Direct
Feedback
1. Output referenced to input
2. Positive output (V
O) with respect to -VIN
3. Step down – V
O < VIN
4. Low cost direct feedback (±10% typ.)
5. Requires an output load to maintain regulation
High-Side
Buck –
Optocoupler
Feedback
1. Output referenced to input
2. Positive output (V
O) with respect to -VIN
3. Step down – V
O < VIN
4. Optocoupler feedback
- Accuracy only limited by reference choice
- Low cost non-safety rated optocoupler
- No pre-load required
5. Minimum no-load consumption
Low-Side
Buck –
Optocoupler
Feedback
1. Output referenced to input
2. Negative output (V
O) with respect to +VIN
3. Step down – V
O < VIN
4. Optocoupler feedback
- Accuracy only limited by reference choice
- Low cost non-safety rated optocoupler
- No pre-load required
- Ideal for driving LEDs
Low-Side
Buck –
Constant
Current LED
Driver
High-Side
Buck-Boost –
Direct
Feedback
1. Output referenced to input
2. Negative output (V
O) with respect to +VIN
3. Step up/down – V
O > VIN or VO < VIN
4. Low cost direct feedback (±10% typ.)
5. Fail-safe – output is not subjected to input
voltage if the internal power MOSFET fails
6. Ideal for driving LEDs – better accuracy and
temperature stability than low-side buck
constant current LED driver
7. Requires an output load to maintain regulation
High-Side
Buck-Boost –
Constant
Current LED
Driver
VO
VIN
PI-7843-031616
+
+
FB
BP/M
S
D
LinkSwitch-TN2
LinkSwitch-TN2
PI-7844-031616
+
+
BP/M
FB
D
S
VO
VIN
LinkSwitch-TN2
PI-7845-031616
+
+
BP/M
FB
D
S
VO
VIN
LinkSwitch-TN2
PI-7846-031616
+
+
BP/M
FB
D
S
VIN
IO
R =
VF
VF
IO
VO
VIN
PI-7847-031616
+
FB
BP/M
S
D
LinkSwitch-TN2
RSENSE =
RSENSE
300 Ω
2 kΩ
2 V
IO
IO
100 nF
10 µF
50 V
VIN
PI-7849-031616
+
FB
BP/M
S
D
LinkSwitch-TN2



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