FSDM0265RNB Datasheet, PDF (1/20 Pages) Fairchild Semiconductor – Green Mode Fairchild Power Switch (FPS)

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FSDM0265RNB
Green Mode Fairchild Power Switch (FPS^TM)
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
• Over Voltage Protection (OVP)
• Over Load Protection (OLP)
• Internal Thermal Shutdown Function (TSD)
• Auto-Restart Mode
• Under Voltage Lockout (UVLO)
• Low Operating Current (3mA)
• Adjustable Peak Current Limit
• Built-in Soft Start
Applications
• SMPS for VCR, SVR, STB, DVD & DVCD Player
• SMPS for Printer, Facsimile & Scanner
• Adapter for Camcorder
Related Application Notes
• AN-4137, 4141, 4147(Flyback) / AN-4134(Forward)
Description
The FSDM0265RNB 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. This
devices is an integrated high voltage power switching regu-
lator which combines an avalanche rugged Sense FET with a
current mode PWM control block. The integrated PWM con-
troller features include: a fixed oscillator with frequency
modulation for reduced EMI, Under Voltage Lock Out
(UVLO) protection, Leading Edge Blanking (LEB), an opti-
mized gate turn-on/turn-off driver, Thermal Shut Down
(TSD) protection and temperature compensated precision
current sources for loop compensation and fault protection
circuitry. The FSDM0265RNB offers better performance in
Soft Start than FSDM0265RN. When compared to a discrete
MOSFET and controller or RCC switching converter solu-
tion, the FSDM0265RNB reduces total component count,
design size, weight while increasing efficiency, productivity
and system reliability. This device provides a basic platform
that is well suited for the design of cost-effective flyback
converters.
FPS^TM is a trademark of Fairchild Semiconductor Corporation.
©2005 Fairchild Semiconductor Corporation
OUTPUT POWER TABLE
230VAC ±15%⁽³⁾
85-265VAC
PRODUCT
Adapt- Open Adapt- Open
er⁽¹⁾ Frame⁽²⁾ er⁽¹⁾ Frame⁽²⁾
FSDM0265RNB 16W
27W
13W
20W
FSDL0365RNB 19W
30W
16W
24W
FSDM0365RNB 19W
30W
16W
24W
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
Source
DC
OUT
Figure 1. Typical Flyback Application
Rev.1.0.4