Document
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
October 2011
FSD156MRBN Green-Mode Fairchild Power Switch (FPS™)
Features
Advanced Soft Burst-Mode Operation for Low Standby Power and Low Audible Noise Random Frequency Fluctuation (RFF) for Low EMI Pulse-by-Pulse Current Limit Various Protection Functions: Overload Protection (OLP), Over-Voltage Protection (OVP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD) with Hysteresis, Output-Short Protection (OSP), and Under-Voltage Lockout (UVLO) with Hysteresis Low Operating Current (0.4mA) in Burst Mode Internal Startup Circuit Internal High-Voltage SenseFET: 650V Built-in Soft-Start: 15ms Auto-Restart Mode
Description
The FSD156MRBN is an integrated Pulse Width Modulation (PWM) controller and SenseFET specifically designed for offline Switch-Mode Power Supplies (SMPS) with minimal external components. The PWM controller includes an integrated fixed-frequency oscillator, Under-Voltage Lockout (UVLO), LeadingEdge Blanking (LEB), optimized gate driver, internal soft-start, temperature-compensated precise current sources for loop compensation, and self-protection circuitry. Compared with a discrete MOSFET and PWM controller solution, the FSD series can reduce total cost, component count, size, and weight; while simultaneously increasing efficiency, productivity, and system reliability. This device provides a basic platform suited for cost-effective design of a flyback converter.
Applications
Power Supply for LCD Monitor, STB, and DVD Combination
Ordering Information
Output Power Table(2) Part Number Package Operating Current RDS(ON) Junction Limit (Max.) Temperature
-40°C ~ +125°C 1.60A 2.3
230VAC ±15%(3) Adapter(4)
26W
85-265VAC
Open Open Adapter(4) Frame(5) Frame(5)
40W 20W 30W
Replaces Device
FSFM300N FSGM300
FSD156MRBN
8-DIP
Notes: 1. Lead-free package per JEDEC J-STD-020B. 2. The junction temperature can limit the maximum output power. 3. 230VAC or 100/115VAC with voltage doubler. 4. Typical continuous power in a non-ventilated enclosed adapter measured at 50C ambient temperature. 5. Maximum practical continuous power in an open-frame design at 50C ambient temperature.
© 2011 Fairchild Semiconductor Corporation FSD156MRBN • Rev. 1.0.0
www.fairchildsemi.com
Free Datasheet http://www.datasheet4u.com/
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
Application Circuit
Figure 1.
Typical Application Circuit
Internal Block Diagram
Figure 2.
© 2011 Fairchild Semiconductor Corporation FSD156MRBN • Rev. 1.0.0
Internal Block Diagram
www.fairchildsemi.com 2
Free Datasheet http://www.datasheet4u.com/
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
Pin Configuration
1. GND 2. VCC
8. Drain 7. Drain
FSD156MRBN
3. FB 4. N.C. 6. Drain 5. Drain
Figure 3.
Pin Configuration (Top View)
Pin Definitions
Pin #
1 2
Name
GND VCC
Description
Ground. This pin is the control ground and the SenseFET source. Power Supply. This pin is the positive supply input, which provides the internal operating current for both startup and steady-state operation. Feedback. This pin is internally connected to the inverting input of the PWM comparator. The collector of an opto-coupler is typically tied to this pin. For stable operation, a capacitor should be placed between this pin and GND. If the voltage of this pin reaches 7.0V, the overload protection triggers, which shuts down the FPS™. No Connection SenseFET Drain. High-voltage power SenseFET drain connection.
3 4 5, 6, 7, 8
FB NC Drain
© 2011 Fairchild Semiconductor Corporation FSD156MRBN • Rev. 1.0.0
www.fairchildsemi.com 3
Free Datasheet http://www.datasheet4u.com/
FSD156MRBN — Green-Mode Fairchild Power Switch (FPS™)
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only.
Symbol
VDS VCC VFB IDM IDS EAS PD TJ TSTG ESD Drain Pin Voltage VCC Pin Voltage Feedback Pin Voltage Drain Current Pulsed
Parameter
Min.
Max.
650 26
Unit
V V V A A A mJ W C C C kV
-0.3 TC=25C TC=100C
10.0 4 1.9 1.27 190 1.5 150
Continuous Switching Drain Current(6) Single Pulsed Avalanche Energy Maximum Junction Temperature Operating Junction Temperature Storage Temperature Electrostatic Discharge Capability
(9) (7) (8)
Total Power Dissipation (TC=25C)
-40 -55
+125 +150 5 2
Human Body Model, JESD22-A114 Charged Device Model, JESD22-C101
Notes: 6. Repetitive peak switching current when the inductive load is assumed: Limited by maximum duty (DMAX=0.73) and junction temperature (see Figure 4). 7. L=45mH, starting TJ=25C. 8. Infinite cooling condition (refer to the SEMI G30-88). 9. Although this parameter guar.