FSDM0465RB Datasheet, PDF (1/18 Pages) Fairchild Semiconductor – Green Mode Fairchild Power Switch (FPS)

www.fairchildsemi.com
FSDM0465RB
Green Mode Fairchild Power Switch (FPS^TM)
Features
• Internal Avalanche Rugged SenseFET
• Advanced Burst-Mode Operation Consumes Under One
W at 240VAC & 0.5W Load
• Precision Fixed Operating Frequency (66kHz)
• Internal Start-up Circuit
• Improved Pulse by Pulse Current Limiting
• Over Voltage Protection (OVP) : Auto-Restart
• Over Load Protection (OLP): Auto-Restart
• Internal Thermal Shutdown (TSD) : Auto-Restart
• Under Voltage Lock Out (UVLO) with Hysteresis
• Low Operating Current (2.5mA)
• Built-in Soft Start
Application
• SMPS for LCD monitor and STB
• Adapter
Related Application Notes
• AN4137 - Design Guidelines for Off-line Flyback
Converters Using Fairchild Power Switch (FPS)
• AN4140 - Transformer Design Consideration for Off-line
Flyback Converters Using Fairchild Power Switch
• AN4141 - Troubleshooting and Design Tips for Fairchild
Power Switch Flyback Applications
• AN4148 - Audible Noise Reduction Techniques for FPS
Applications
Description
The FSDM0465RB is an integrated Pulse Width Modulator
(PWM) and SenseFET specifically designed for high
performance offline Switch Mode Power Supplies (SMPS)
with minimal external components. This device is an
integrated high voltage power switching regulator which
combines a rugged avalanche, SenseFET with a current mode
PWM control block. The PWM controller includes integrated
fixed frequency oscillator, under voltage lockout, leading edge
blanking (LEB), optimized gate driver, internal soft start,
temperature compensated precise current sources for a loop
compensation and self protection circuitry. Compared with a
discrete MOSFET and PWM controller solution, the PWM/
FSDMRB can reduce total cost, component count, size and
weigh, while simultaneously increasing efficiency, productivity,
and system reliability. This device provides a basic platform
well suited for cost-effective designs of flyback converters.
OUTPUT POWER TABLE ⁽⁴⁾
230VAC ±15%⁽³⁾
85-265VAC
PRODUCT
Adapt- Open Adapt- Open
er⁽¹⁾ Frame⁽²⁾ er⁽¹⁾ Frame⁽²⁾
FSDM0465RB 48W
56W
40W
48W
FSDM0565RB 60W
70W
50W
60W
FSDM07652RB 70W
80W
60W
70W
FSDM12652RB 90W
110W
80W
90W
Table 1. Maximum Output Power
Notes:
1. Typical continuous power in a non-ventilated enclosed
adapter measured at 50°C ambient.
2. Maximum practical continuous power in an open frame
design at 50°C ambient.
3. 230 VAC or 100/115 VAC with doubler.
4. The junction temperature can limit the maximum output
power.
Typical Circuit
AC
IN
Vstr Drain
PWM
Vfb
Vcc
Source
DC
OUT
Figure 1. Typical Flyback Application
FPS^TM is a trademark of Fairchild Semiconductor Corporation
©2005 Fairchild Semiconductor Corporation
Rev.1.0.0