Fairchild FSDH321 Manual

FSDH321, FSDL321
Green Mode Fairchild Power Switch (FPS
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.
FPS is a trademark of Fairchild Semiconductor Corporation.
TM
©2005 Fairchild Semiconductor Corporation
OUTPUT POWER TABLE
230VAC ±15%
PRODUCT
Adapt-
(1)
er
FSDL321 11W
FSDH321 11W
FSDL0165RN 13W
FSDM0265RN 16W
FSDH0265RN 16W
FSDL0365RN 19W
FSDM0365RN 19W
FSDL321L 11W
FSDH321L 11W
FSDL0165RL 13W
FSDM0265RL 16W
FSDH0265RL 16W
FSDL0365RL 19W
FSDM0365RL 19W
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
AC
IN
Vstr Drain
Ipk
PWM
Vfb Vcc
Figure 1. Typical Flyback Application
www.fairchildsemi.com
TM
)
(3)
85-265VAC
Open Adapt- Open
(2) (1)
Frame er Frame
17W 8W 12W
17W 8W 12W
23W 11W 17W
27W 13W 20W
27W 13W 20W
30W 16W 24W
30W 16W 24W
17W 8W 12W
17W 8W 12W
23W 11W 17W
27W 13W 20W
27W 13W 20W
30W 16W 24W
30W 16W 24W
Source
Rev.1.0.5
(2)
DC
OUT