FS6X0420R Datasheet, PDF (1/15 Pages) Fairchild Semiconductor – Fairchild Power Switch (FPS)

March 2006
FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ
Fairchild Power Switch (FPS™)
Features
„ Current Mode PWM Control with a Fixed Operating Fre-
quency (300kHz)
„ Pulse by Pulse Current Limit
„ Over Load Protection
„ Over Voltage Protection
„ Thermal Shutdown
„ Line Under Voltage Detection and Sleep on/off Function
„ Internal High Voltage SenseFET (200V)
„ Supports Forward or Flyback Topology
Applications
„ DC-DC Converter
„ PoE Device
Related Application Notes
„ AN4137 - Design Guidelines for Off-line Flyback Converters
Using Fairchild Power Switch (FPS)
„ AN4140 - Transformer Design Consideration for Off-line Fly-
back 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 FS6X-Series is specially designed for off-line DC-DC con-
verters with minimal external components. This device com-
bines a current mode PWM controller with a high voltage power
SenseFET in a single package. The PWM controller includes
integrated fixed frequency oscillator, line under voltage lockout,
sleep on/off function, thermal shutdown protection, over voltage
protection, pulse-by-pulse current limit, and temperature com-
pensated precise current sources for a loop compensation.
Compared with the discrete MOSFET and PWM controller solu-
tion, the FS6X-Series can reduce total cost, component count,
size, and weight, while simultaneously increasing efficiency,
productivity, and system reliability.
OUTPUT POWER TABLE⁽¹⁾
PRODUCT
FS6X0420RJ
FS6X0720RJ
FS6X1220RJ
36V_DC~72V_DC
14W
26W
36W
Table 1. Maximum Output Power
Note:
1. Maximum practical continuous power in an open
frame design at 50°C ambient.
Ordering Information
Part Number
FS6X0420RJ
FS6X0720RJ
FS6X1220RJ
FS6X0420RJX
FS6X0720RJX
FS6X1220RJX⁽²⁾
Operating Temp.
Range
Pb-Free
-25°C to +85°C
Yes
-25°C to +85°C
Yes
-25°C to +85°C
Yes
-25°C to +85°C
Yes
-25°C to +85°C
Yes
-25°C to +85°C
Yes
Note:
2. X : Tape & Reel
FPS^TM is a trademark of Fairchild Semiconductor Corporation
Package
D2-Pak-6L
D2-Pak-6L
D2-Pak-6L
D2-Pak-6L
D2-Pak-6L
D2-Pak-6L
©2006 Fairchild Semiconductor Corporation
1
FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1
Packing Method
Tube
Tube
Tube
Tape & Reel
Tape & Reel
Tape & Reel
Marking
Code
6X0420R
6X0720R
6X1220R
6X0420R
6X0720R
6X1220R
www.fairchildsemi.com