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Infineon Technologies ICE5GR4780AG | Demoboard REF_5GR4780AG_6W1
6 W auxiliary power supply using ICE5GR4780AG
Overview
| Topology | Flyback Converter |
| Switching frequency | 125 kHz |
| Output 1 | 12 V / 0.5 A |
| IC revision | V1.0 |
Description
The REF_5GR4780AG_6W1 is an auxiliary power supply reference design based on Infineon’s 5th generation fixed-frequency CoolSET™ family (ICE5GR4780AG) configured in a flyback topology. It utilizes a simple Zener diode reference voltage for the feedback loop and a simple input Pi filter for EMI suppression to support cost performance auxiliary power supply targeting small home appliances.
Features
- 125kHz maximum switching frequency with 800V integrated MOSFET
- Power delivery of up to 15W with universal wide input range (85~300VAC) DCM design
- Brown in protection, fast and robust start-up operation with cascode configuration
- 3 level selectable entry/exit active burst mode profile (optional)
- Built-in digital soft-start
- Cycle by cycle peak current limitation
- Support both DCM and CCM operation with slope compensation
- Integrated error amplifier to support direct feedback typical with non-isolated flyback topology
- Digital frequency reduction with decreasing load for higher efficiency
- Adjustable line input over voltage protection (optional)
- VCC pin short to ground protection
- OLP, output short, OTP with hysteresis and VCC over/under voltage protection
- Auto-restart for all protection features
Typical applications
- Offline aux SMPS for server, PC power, aircon, refrigerator and audio, Offline main SMPS for adapter, set-top-box, water purifier, TV, industrial SMPS and POE
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | VR(V (AC)) | Safety Class | dV/dt(V/µs) | DF @ 1 kHz(%) | RISO | Pitch(mm) | L(mm) | W(mm) | H(mm) | Packaging | L(µH) | IR(A) | ISAT,10%(A) | RDC max.(Ω) | fres(MHz) | Version | Package | Input | VCE max.(V) | IF max.(mA) | Test Condition CTR | CTR min.(%) | CTR max.(%) | VISO(V (RMS)) | Operating Temperature | Endurance(h) | IRIPPLE(mA) | ILeak(µA) | DF(%) | Ø D(mm) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WCAP-FTX2 Film Capacitors, Across the mains, 100 nF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTX2 Film Capacitors | Capacitance100 nF | Rated Voltage275 V (AC) | Safety ClassX2 | Rate of Voltage Rise300 V/µs | Dissipation Factor0.1 % | Insulation Resistance30 GΩ | Pitch10 mm | Length13 mm | Width7 mm | Height13 mm | PackagingBulk | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | ||||
 | WE-TI Radial Leaded Wire Wound Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TI Radial Leaded Wire Wound Inductor | – | – | – | – | – | – | – | Length6 mm | Width6 mm | Height8.5 mm | – | Inductance10 µH | Rated Current2.5 A | Saturation Current @ 10%2.6 A | DC Resistance0.08 Ω | Self Resonant Frequency28 MHz | VersionHeat Shrinking Tube | – | – | – | – | – | – | – | – | Operating Temperature -40 °C up to +125 °C | – | – | – | – | – | ||||
| WE-TI Radial Leaded Wire Wound Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TI Radial Leaded Wire Wound Inductor | – | – | – | – | – | – | – | Length9.5 mm | Width9.5 mm | Height13.5 mm | – | Inductance1000 µH | Rated Current0.6 A | Saturation Current @ 10%0.55 A | DC Resistance1.55 Ω | Self Resonant Frequency1.4 MHz | VersionHeat Shrinking Tube | – | – | – | – | – | – | – | – | Operating Temperature -40 °C up to +125 °C | – | – | – | – | – | ||||
 | WCAP-ATG5 Aluminum Electrolytic Capacitors, –, 22 µF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATG5 Aluminum Electrolytic Capacitors | Capacitance22 µF | Rated Voltage35 V (AC) | – | – | – | – | Pitch2 mm | Length11 mm | – | – | PackagingAmmopack | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Endurance 2000 | Ripple Current61 mA | Leakage Current7.7 µA | Dissipation Factor12 % | Diameter5 mm | ||||
| WCAP-ATG5 Aluminum Electrolytic Capacitors, –, 22 µF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATG5 Aluminum Electrolytic Capacitors | Capacitance22 µF | Rated Voltage400 V (AC) | – | – | – | – | Pitch5 mm | Length20 mm | – | – | PackagingAmmopack | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Endurance 2000 | Ripple Current170 mA | Leakage Current264 µA | Dissipation Factor15 % | Diameter13 mm | ||||
 | WCAP-ATLI Aluminum Electrolytic Capacitors, –, 100 µF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATLI Aluminum Electrolytic Capacitors | Capacitance100 µF | Rated Voltage25 V (AC) | – | – | – | – | Pitch2.5 mm | Length11 mm | – | – | PackagingAmmopack | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Endurance 2000 | Ripple Current410 mA | Leakage Current25 µA | Dissipation Factor10 % | Diameter6.3 mm | ||||
| WCAP-ATLI Aluminum Electrolytic Capacitors, –, 560 µF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATLI Aluminum Electrolytic Capacitors | Capacitance560 µF | Rated Voltage25 V (AC) | – | – | – | – | Pitch5 mm | Length20 mm | – | – | PackagingAmmopack | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Endurance 5000 | Ripple Current1450 mA | Leakage Current140 µA | Dissipation Factor10 % | Diameter10 mm | ||||
 | WL-OCPT LSOP-4, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-OCPT LSOP-4 | – | – | – | – | – | – | – | Length7.6 mm | Width3.6 mm | Height2 mm | – | – | – | – | – | – | – | PackageLSOP4 | InputDC | Collector Emitter Voltage80 V | Forward Current60 mA | IF = 5 mA VCE = 5 V | Current Transfer Ratio [min.]130 % | Current Transfer Ratio [max.]260 % | Isolation Voltage5000 V (RMS) | Operating Temperature -55 °C up to +110 °C | – | – | – | – | – |