FSDM1265RB Datasheet, PDF (1/20 Pages) Fairchild Semiconductor – Green Mode Fairchild Power Switch (FPS)

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FSDM1265RB
Green Mode Fairchild Power Switch (FPS^TM)
Features
• Internal Avalanche Rugged Sense FET
• Advanced Burst-Mode operation that consumes less than
1 W at 240VAC and 0.5W load
• Precision Fixed Operating Frequency (66kHz)
• Internal Start-up Circuit
• Improved Pulse by Pulse Current Limiting
• Over-Voltage Protection (OVP)
• Over-Load Protection (OLP)
• Internal Thermal Shutdown Function (TSD)
• Auto-Restart Mode
• Under Voltage Lock Out (UVLO) with Hysteresis
• Low Operating Current (2.5mA)
• Built-in Soft Start
Application
• SMPS (Switch Mode Power Supplies) for LCD monitor
and STB
• Adapter
OUTPUT POWER TABLE⁽⁴⁾
230VAC ±15%⁽³⁾
85-265VAC
PRODUCT
Adapt- Open Adapt- Open
er⁽¹⁾ Frame⁽²⁾ er⁽¹⁾ Frame⁽²⁾
FSDM0565RB 60W
70W
50W
60W
FSDM0565RBI 60W
70W
50W
60W
FSDM07652RB 70W
80W
60W
70W
FSDM1265RB 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.
Description
The FSDM1265RB is an integrated Pulse-Width Modulator
(PWM) and a SenseFET which is specifically designed for
high performance offline SMPS with minimal external
Typical Circuit
components. This device is an integrated high-voltage power
switching regulator which combines a rugged avalanche
AC
Sense FET with a current mode PWM control block. The
IN
DC
PWM controller includes integrated fixed frequency oscillator,
OUT
under-voltage lockout, leading edge blanking (LEB), optimized
gate driver, internal soft-start, and precise current sources that
Vstr Drain
are temperature compensated for loop compensation and self
protection circuitry. Compared with discrete MOSFET and
PWM
PWM controller solution, it can reduce total cost, component
count, size, and weight, while simultaneously increasing
Vfb
Vcc
Source
efficiency, productivity, and system reliability. This device is a
basic platform which is well suited for cost effective designs
of flyback converters.
Figure 1. Typical Flyback Application
FPS^TM is a trademark of Fairchild Semiconductor Corporation.
©2005 Fairchild Semiconductor Corporation
Rev.1.0.0