Document
www.fairchildsemi.com
KA5Q-SERIES
KA5Q0765RT/KA5Q12656RT/KA5Q1265RF/ KA5Q1565RF Fairchild Power Switch(FPS)
Features
• Quasi Resonant Converter Controller • Internal Burst Mode Controller for Stand-by Mode • Pulse by Pulse Current Limiting • Over Current Latch Protection • Over Voltage Protection (Vsync: Min. 11V) • Internal Thermal Shutdown Function • Under Voltage Lockout • Internal High Voltage Sense FET • Auto-Restart Mode
Description
The Fairchild Power Switch(FPS) product family is specially designed for an off-line SMPS with minimal external components. The Fairchild Power Switch(FPS) consist of high voltage power SenseFET and current mode PWM controller IC. PWM controller features integrated fixed oscillator, under voltage lock out, leading edge blanking, optimized gate turn-on/ turn-off driver, thermal shut down protection, over voltage protection, temperature compensated precision current sources for loop compensation and fault protection circuit. compared to discrete MOSFET and controller or RCC switching converter solution, a Fairchild Power Switch(FPS) can reduce total component count, design size, and weight and at the same time increase & efficiency, productivity, and system reliability. It has a basic platform well suited for cost-effective design in quasi resonant converter as C-TV power supply.
TO-220F-5L TO-3PF-5L
Internal Block Diagram
11
1. Drain 2. GND 3. VCC 4. FB 5. Sync
VCC DRAIN
31
SYNC 5 FEEDBACK 4
Burst Mode 3.5V/1.25V
Normal Mode 4.6V/2.6V
VREF Ifb
+ - 32V +-1%
11V on 12V off
+
+
+ OSC -
2.5R R
+
Internal BIAS
VREF
S QB R
LEB 450ns
+ -
UVLO 15V/9V
RnRoon
Rof
fRoff
7.5V Sync
12V
Idelay 1V
+ - OLP
+ - OVP
+ -
Power on
Reset
SQ R
Offset
Delay 80ns
+ -
OCL
Rsense 1V
QS
R Power on Reset (VCC=6.5V)
Thermal Shut Down
2 SOURCE
©2004 Fairchild Semiconductor Corporation
Rev.1.0.4
KA5Q-SERIES
Absolute Maximum Ratings
(Ta=25°C, unless otherwise specified)
Characteristic KA5Q0765RT Drain-source Voltage Drain-Gate Voltage(RGS=1MΩ) Gate-Source(GND) Voltage Drain Current Pulsed(1) Continuous Drain Current (Tc = 25°C) Continuous Drain Current (Tc = 100°C) Single Pulsed Avalanch Current(3)(Energy (2)) Maximum Supply Voltage
Input Voltage Range
Total Power Dissipation Operating Junction Temperature. Operating Ambient Temperature. Storage Temperature Range. Thermal Resistance ESD Capability, HBM Model (All pins) ESD Capability, Machine Model (All pins)
KA5Q12656RT Drain-source Voltage Drain-Gate Voltage(RGS=1MΩ) Gate-Source(GND) Voltage Drain Current Pulsed(1) Continuous Drain Current (Tc = 25°C) Continuous Drain Current (Tc = 100°C) Single Pulsed Avalanch Current(Energy (2)) Maximum Supply Voltage
Input Voltage Range
Total Power Dissipation Operating Junction Temperature. Operating Ambient Temperature. Storage Temperature Range. Thermal Resistance ESD Capability, HBM Model (All pins) ESD Capability, Machine Model (All pins)
Symbol
VDSS VDGR VGS IDM
ID ID IAS(EAS) VCC,MAX VFB VSync PD TJ TA TSTG Rthjc
VDSS VDGR VGS IDM
ID ID IAS(EAS) VCC,MAX VFB VSync PD TJ TA TSTG Rthjc
Value
650 650 ±30 15 3.8 2.4 20(570) 40 -0.3 to VCC -0.3 to 13 47 +160 -25 to +85 -55 to +150 2.7 2.0 300
650 650 ±30 21 5.3 3.4 30(950) 40 -0.3 to VCC -0.3 to13 55 +160 -25 to +85 -55 to +150 2.7 2.0 300
Unit
V V V ADC ADC ADC A(mJ) V V V W °C °C °C °C/W kV V
V V V ADC ADC ADC A(mJ) V V V W °C °C °C °C/W kV V
2
Absolute Maximum Ratings (Continued)
(Ta=25°C, unless otherwise specified)
Characteristic KA5Q1265RF Drain-source Voltage Drain-Gate Voltage(RGS=1MΩ) Gate-Source(GND) Voltage Drain Current Pulsed(1) Continuous Drain Current (Tc = 25°C) Continuous Drain Current (Tc = 100°C) Single Pulsed Avalanch Current(Energy (2)) Maximum Supply Voltage
Input Voltage Range
Total Power Dissipation Operating Junction Temperature. Operating Ambient Temperature. Storage Temperature Range. Thermal Resistance ESD Capability, HBM Model (All pins) ESD Capability, Machine Model (All pins)
Symbol
VDSS VDGR VGS IDM
ID ID IAS(EAS) VCC,MAX VFB VSync PD TJ TA TSTG Rthjc
KA5Q1565RF Drain-source Voltage Drain-Gate Voltage(RGS=1MΩ) Gate-Source(GND) Voltage Drain Current Pulsed(1) Continuous Drain Current (Tc = 25°C) Continuous Drain Current (Tc = 100°C) Single Pulsed Avalanch Current(Energy (2)) Maximum Supply Voltage
Input Voltage Range
Total Power Dissipation Operating Junction Temperature. Operating Ambient Temperature. Storage Temperature Range. Thermal Resistance ESD Capability, HBM Model (All pins) ESD Capability, Machine Model (All pins)
VDSS VDGR VGS IDM
ID ID IAS(EAS) VCC,MAX VFB VSync PD TJ TA TSTG Rthjc
Note: 1. Repetitive rating : Pulse width limited by maximum junction temperature 2. L = 10mH, VDD =50V, RG = 27Ω, starting Tj = 25°C 3. L = 13uH, starting Tj = 25°C
Value
650 650 ±30 36 8.3 5.3 33(950) 40 -0.3 to VCC -0.3 to 13 95 +160 -25 to +85 -55 to +150 2.7 2.0 300
650 650 ±30 60 10.3 6.6 36(1050) 40 -0.3 to VCC -0.3 to 13 98 +160 -25 to +85 -55 to +150 2.7 2.0 300
KA5Q-SERIES
Unit
V V V ADC ADC A.