sgp100 Fairchild Semiconductor, sgp100 Datasheet

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sgp100

Manufacturer Part Number
sgp100
Description
Sgp100 Primary-side-control Pwm Controller
Manufacturer
Fairchild Semiconductor
Datasheet
Primary-side-control PWM Controller
FEATURES
APPLICATIONS
DESCRIPTION
This highly integrated PWM controller provides several
features to enhance the performance of low-power
flyback converters. The patented topology of SGP100
enables simplified circuit design for battery charger
TYPICAL APPLICATION
© System General Corp.
Version 1.1.1 (IAO33.0042.B1)
control without secondary-feedback circuitry
decreasing
hopping to solve EMI problems
Constant-voltage (CV) and constant-current (CC)
Green-mode function: PWM frequency linearly
Fixed PWM frequency at 42kHz with frequency
Low start-up current: 10μA (typical)
Low operating current: 6.5mA (typical)
Peak-current-mode control in CV mode
Cycle-by-cycle current limiting
V
V
Gate output maximum voltage clamped at 18V
Fixed over-temperature protection with latch
Battery chargers for cellular phones, cordless phones,
PDA, digital cameras, and power tools
Replacement for linear transformer and RCC SMPS
DD
DD
over-voltage protection with latch (OVP)
under-voltage lockout (UVLO)
- 1 -
applications. The result is a low-cost, smaller and lighter
charger than a conventional design or a linear transformer.
To minimize the standby power consumption, the
proprietary green-mode function provides off-time
modulation to linearly decrease PWM frequency under
light-load conditions. This green-mode function allows
the
requirements. The start-up current is only 10µA, which
allows large start-up resistance for further power saving.
A charger can be implemented with few external
components and minimal cost. A typical output CV/CC
characteristic envelope is shown in Figure 1.
Vo(V)
power
Figure 1. Typical Output V-I Characteristic
www.sg.com.tw • www.fairchildsemi.com
supply to
meet
Product Specification
+/- 10%
power
September 26, 2007
conservation
+/- 10%
SGP100
Io(mA)

Related parts for sgp100

sgp100 Summary of contents

Page 1

... Replacement for linear transformer and RCC SMPS DESCRIPTION This highly integrated PWM controller provides several features to enhance the performance of low-power flyback converters. The patented topology of SGP100 enables simplified circuit design for battery charger TYPICAL APPLICATION © System General Corp. Version 1.1.1 (IAO33.0042.B1) applications ...

Page 2

... GATE 8 Driver Output The totem-pole output driver to drive the power MOSFET. © System General Corp. Version 1.1.1 (IAO33.0042.B1) PIN CONFIGURATION PGND 3 COMI 4 COMV Package 8-pin SOP www.sg.com.tw • www.fairchildsemi.com Product Specification SGP100 SOP-8 GATE 8 VDD 7 6 SGND 5 VS September 26, 2007 ...

Page 3

... Primary-side-control PWM Controller BLOCK DIAGRAM © System General Corp. Version 1.1.1 (IAO33.0042.B1 www.sg.com.tw • www.fairchildsemi.com Product Specification SGP100 September 26, 2007 ...

Page 4

... Fs=F 90 130 OSC = Test Condition Min. Typ ±2.2 ±2.6 2.75 3.00 350 500 www.sg.com.tw • www.fairchildsemi.com Product Specification SGP100 Value Unit 30 V -0.3 to 7.0 V 400 mW °C/W 68.3 °C -40 to +125 °C -55 to +150 260 °C 4.5 kV 200 V Max. Unit -20 to +85 °C Max ...

Page 5

... V =2.5V VS COMV V =2V, V =2.5V VS COMV V =2.3V VS Test Condition V =3V, V =2.5V CS COMI V =0.5V, V =2.5V CS COMI V =0. www.sg.com.tw • www.fairchildsemi.com Product Specification SGP100 Min. Typ. Max. Unit 1 µA Typ. Max. Unit 2 kΩ 150 200 ns 1025 1225 ns 1200 1350 ns 0.40 0. ...

Page 6

... I =10mA =8V, I =1mA =20V, C =1nF =20V, C =1nF =25V DD Test Condition Min. + 135 - 6 - www.sg.com.tw • www.fairchildsemi.com Product Specification SGP100 Typ. Max. Unit 1 200 Typ. Max. Unit o 150 165 C September 26, 2007 ...

Page 7

... Reference Voltage (V 2.60 2.56 2.52 2.48 2.44 2.40 -40 - 110 125 - 7 - www.sg.com.tw • www.fairchildsemi.com Product Specification SGP100 ) vs DD-O N Temperature - 110 125 Temperature (℃ Temperature -25 - 110 125 Temperature (℃) ...

Page 8

... Temperature G reen-Mode S tarting Voltage (V 1.800 1.740 1.680 1.620 1.560 1.500 -40 - 110 125 - 8 - www.sg.com.tw • www.fairchildsemi.com Product Specification SGP100 ) vs Temperature OSC-CM-MIN - 110 125 Temperature ( ℃ 110 125 Temperature (℃ ...

Page 9

... Temperature Maximum Duty C ycle (DC Y 81.00 79.00 77.00 75.00 73.00 71. 110 125 -40 - www.sg.com.tw • www.fairchildsemi.com Product Specification SGP100 ) vs Temperature I-S INK - 110 125 Temperature (℃ Temperature V -S INK - 110 125 Temperature (℃ ...

Page 10

... Figure 3. Green-Mode Operation Frequency vs. V 3mS Constant Voltage (CV) and Constant Current (CC) Operation An innovative technique of the SGP100 can accurately achieve CV/CC characteristic output without secondary side voltage or current-feedback circuitry. There is a feedback signal for CV/CC operation from the reflected voltage across the primary auxiliary winding. This ...

Page 11

... UVLO voltage. The PWM controller does not release latch mode until the AC is unplugged. Auxiliary Gate Output Winding The SGP100 BiCMOS output stage is a fast totem pole gate driver. Cross conduction is avoided to minimize heat R1 dissipation, increase efficiency, and enhance reliability. The output driver is clamped by an internal 18V Zener diode to protect power MOSFET transistors from undesired over-voltage gate signals ...

Page 12

... MLCC X7R 103pF MLCC 102pF/100V Electrolytic Cap. 560µF/10V L-ESR Electrolytic Cap. 330µF/10V L-ESR Inductor 1mH Inductor 5µH Fairchild 2A/600V 2N60 TO-251 SGP100 - 12 - Product Specification SGP100 C8 R11 C10 R12 EE-16 Lm=1.5mH Pri:Sec:Aux=135:10:33 www.sg.com.tw • www.fairchildsemi.com September 26, 2007 ...

Page 13

... Product Specification SGP100 C L Typ. Max. 0.069 0.010 0.016 0.008 0.196 0.157 0.050 0.060 0.015X45° 0.244 0.050 8° September 26, 2007 ...

Page 14

... Primary-side-control PWM Controller © System General Corp. Version 1.1.1 (IAO33.0042.B1 www.sg.com.tw • www.fairchildsemi.com Product Specification SGP100 September 26, 2007 ...

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