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: 10A (typical)` Low operating curr...
SGP100: 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...
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Symbol | Parameter |
Value |
Unit |
VDD | DC Supply Voltage* |
30 |
V |
VL | Input Voltage to CS, COMV, COMI, VS Pins |
-0.3 to 7.0 |
V |
PD | Power Dissipation |
400 |
mW |
RJC | Thermal Resistance (Junction-to-Case) |
68.3 |
/W |
TJ | Operating Junction Temperature |
-40 to +125 |
|
TSTG | Storage Temperature Range |
-55 to +150 |
|
TL | Lead Temperature (Wave Soldering or Infrared, 10 Seconds) |
260 |
|
ESD | Electrostatic Discharge Capability, Human Body Model |
4.5 |
kV |
Electrostatic Discharge Capability, Machine Model |
200 |
V |
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 applications. The result of SGP100 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 of SGP100 allows the power supply to meet power conservation requirements. The start-up current is only 10A, which allows large start-up resistance for further power saving.
A charger of SGP100 can be implemented with few external components and minimal cost. A typical output CV/CC characteristic envelope is shown in Figure 1.