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FSDH321 Datasheet(PDF) 1 Page - Fairchild Semiconductor

Part No. FSDH321
Description  Green Mode Fairchild Power Switch (FPS TM)
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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FSDH321 Datasheet(HTML) 1 Page - Fairchild Semiconductor

 
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©2005 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev.1.0.5
FPSTM is a trademark of Fairchild Semiconductor Corporation.
Features
• Internal Avalanche Rugged Sense FET
• Consumes only 0.65W at 240VAC & 0.3W load with
Advanced Burst-Mode Operation
• Frequency Modulation for EMI Reduction
• Precision Fixed Operating Frequency
• Internal Start-up Circuit
• Pulse-by-Pulse Current Limiting
• Abnormal Over Current Protection (AOCP)
• Over Voltage Protection (OVP)
• Over Load Protection (OLP)
• Internal Thermal Shutdown Function (TSD)
• Auto-Restart Mode
• Under Voltage Lockout (UVLO)
• Low Operating Current (max 3mA)
• Adjustable Peak Current Limit
• Built-in Soft Start
Applications
• SMPS for STB, Low cost DVD Player
• Auxiliary Power for PC
• Adapter & Charger
Related Application Notes
• AN-4137, 4141, 4147(Flyback) / AN-4134(Forward)
Description
Each product in the FSDx321 (x for H, L) family consists of
an integrated Pulse Width Modulator (PWM) and Sense
FET, and is specifically designed for high performance off-
line Switch Mode Power Supplies (SMPS) with minimal
external components. Both devices are integrated high volt-
age power switching regulators which combine an avalanche
rugged Sense FET with a current mode PWM control block.
The integrated PWM controller features include: a fixed
oscillator with frequency modulation for reduced EMI,
Under Voltage Lock Out (UVLO) protection, Leading Edge
Blanking (LEB), an optimized gate turn-on/turn-off driver,
Thermal Shut Down (TSD) protection, Abnormal Over Cur-
rent Protection (AOCP) and temperature compensated preci-
sion current sources for loop compensation and fault
protection circuitry. When compared to a discrete MOSFET
and controller or RCC switching converter solution, the
FSDx321 devices reduce total component count, design size,
weight while increasing efficiency, productivity and system
reliability. Both devices provide a basic platform that is well
suited for the design of cost-effective flyback converters.
Notes:
1. Typical continuous power in a non-ventilated enclosed
adapter with sufficient drain pattern as a heat sinker, at
50
°C ambient.
2. Maximum practical continuous power in an open frame
design with sufficient drain pattern as a heat sinker, at 50
°C
ambient.
3. 230 VAC or 100/115 VAC with doubler.
Typical Circuit
Figure 1. Typical Flyback Application
OUTPUT POWER TABLE
PRODUCT
230VAC
±15%(3)
85-265VAC
Adapt-
er(1)
Open
Frame(2)
Adapt-
er(1)
Open
Frame(2)
FSDL321
11W
17W
8W
12W
FSDH321
11W
17W
8W
12W
FSDL0165RN
13W
23W
11W
17W
FSDM0265RN
16W
27W
13W
20W
FSDH0265RN
16W
27W
13W
20W
FSDL0365RN
19W
30W
16W
24W
FSDM0365RN
19W
30W
16W
24W
FSDL321L
11W
17W
8W
12W
FSDH321L
11W
17W
8W
12W
FSDL0165RL
13W
23W
11W
17W
FSDM0265RL
16W
27W
13W
20W
FSDH0265RL
16W
27W
13W
20W
FSDL0365RL
19W
30W
16W
24W
FSDM0365RL
19W
30W
16W
24W
Drain
Source
Vstr
Vfb
Vcc
PWM
AC
IN
DC
OUT
Ipk
FSDH321, FSDL321
Green Mode Fairchild Power Switch (FPSTM)


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