SGP100SZ Fairchild Semiconductor, SGP100SZ Datasheet

IC CTRLR PWM GREEN CM CV/CC 8SOP

SGP100SZ

Manufacturer Part Number
SGP100SZ
Description
IC CTRLR PWM GREEN CM CV/CC 8SOP
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of SGP100SZ

Output Isolation
Isolated
Frequency Range
39 ~ 45kHz
Voltage - Input
6.75 ~ 30 V
Voltage - Output
18V
Power (watts)
400mW
Operating Temperature
-40°C ~ 125°C
Package / Case
8-SOIC (0.154", 3.90mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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 SGP100SZ

SGP100SZ Summary of contents

Page 1

Primary-side-control PWM Controller FEATURES Constant-voltage (CV) and constant-current (CC) control without secondary-feedback circuitry Green-mode function: PWM frequency linearly decreasing Fixed PWM frequency at 42kHz with frequency hopping to solve EMI problems Low start-up current: 10μA (typical) Low operating current: 6.5mA ...

Page 2

... SGP100TP Null=regular package XXXXXXXX: Wafer Lot XXXXXXXXYWWV Y: Year; WW: Week V: Assembly Location ORDERING INFORMATION Part Number Pb-Free SGP100SZ PIN DESCRIPTIONS Name Pin No. Type Function Current sense. Connected to a current-sense resistor for peak-current-mode control Analog Input mode. The current-sense signal is also provided for output-current regulation in CC mode. ...

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

Primary-side-control PWM Controller ABSOLUTE MAXIMUM RATINGS Symbol Parameter V DC Supply Voltage Input Voltage to CS, COMV, COMI, VS Pins L P Power Dissipation D R Thermal Resistance (Junction-to-Case) JC θ T Operating Junction Temperature J T Storage ...

Page 5

Primary-side-control PWM Controller Voltage-Sense Section Symbol Parameter Proportion of T and T for Brownout ON DIS T RATIO Protection Temperature Compensation Current TC-25 * Guaranteed by design. Current-Sense Section Symbol Parameter Z Filter Resistance CS T Propagation Delay ...

Page 6

Primary-side-control PWM Controller GATE Section Symbol Parameter DCY Maximum Duty Cycle MAX V Output Voltage Low OL V Output Voltage High OH T Rising Time R T Falling Time F V Output Clamp Voltage CLAMP Over-Temperature Protection Section Symbol Parameter ...

Page 7

Primary-side-control PWM Controller TYPICAL CHARACTERISTICS Operation C urrent ( Temperature DD-O P 7.000 6.500 6.000 5.500 5.000 4.500 -40 -25 - Temperature (℃) Turn-O ff Threshold Voltage (V Temperature 8.0 7.6 7.2 6.8 6.4 ...

Page 8

Primary-side-control PWM Controller Min. Frequence at No-Load ( Temperature -N-MIN 600.0 560.0 520.0 480.0 440.0 400.0 -40 -25 - Temperature (℃) G reen-Mode Frequency Decreasing Rate (S Temperature 45.0 40.0 35.0 ...

Page 9

Primary-side-control PWM Controller Green-M ode End ing Vol tag e ( Temperature 0.90 0.80 0.70 0.60 0.50 0.40 -40 -25 - Temperature (℃) Output S ource C urrent (I I-S O URC E 80.000 ...

Page 10

Primary-side-control PWM Controller OPERATION DESCRIPTION The patented topology of SGP100 enables simplified circuit design for battery charger applications. Without secondary feedback circuitry, the CV and CC control can be achieved accurately. As shown in Figure 2, with the frequency-hopping PWM ...

Page 11

Primary-side-control PWM Controller Temperature Compensation The SGP100 has built-in temperature compensation circuitry to provide constant reliable voltage regulation at differing ambient temperatures. This internal positive temperature coefficient (PTC) compensation current is used to compensate for the temperature due to the ...

Page 12

Primary-side-control PWM Controller REFERENCE CIRCUIT 5W Flyback 5V/1A Circuit R13 L1 L BD1 AC C1 input VDD 3 COMI GATE C7 R10 4 COMV SGND PGND SGP100 BOM List Symbol Component Symbol Component R1 ...

Page 13

Primary-side-control PWM Controller PACKAGE INFORMATION 8PINS-SOP( DIMENSIONS Millimeter Symbol Min. A 1.346 A1 0.101 4.648 E 3.810 e 1.016 F H 5.791 L 0.406 θ˚ 0° © System General Corp. Version 1.1.1 (IAO33.0042.B1) ...

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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