Current Resonant ICs
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Status:Available
FA6B20N is a switching power supply control IC suitable for LLC current resonance circuits. It facilitates the design of switching power supplies for current resonant converters. It also incorporates a startup element with an absolute maximum input voltage of 600 V, thereby contributing to circuit miniaturization and low power consumption. Combined with our FA1A60N critical mode control IC, FA6B20N can control the operation mode (continuous, intermittent, or stop) of PFC circuits, improve power supply efficiency, optimize PFC operation, and reduce the number of components.
Features
- Built-in start-up circuit enables power supply circuit miniaturization and low power consumption
- Selectable between normal operation mode and low standby mode
- Mode switching selectable between “automatic switching” and “external switching”
- Reduces standby power consumption via burst operation in low standby mode
- Built-in input filter X capacitor discharge function that reduces loss due to discharge resistanceReduces IC current consumption with a VCC quiescent current of 0.80 mA during stoppage
- Built-in 600 V high-side and low-side drive circuits that can directly connect power MOSFETs, operating at 50% duty
- Prevents off-resonance and hard-switching by automatically setting dead time inside the IC
- Built-in protection against overcurrent (IS pin), overload (CA pin, FB pin), overvoltage (VCC pin), and overheating via MODE pin
- Built-in fixed-level brown-in/out function (VH pin)
- Enables condition settings such as overcurrent protection (IS pin detection) delay time setting, operation setting in standby mode, mode switching power setting during automatic switching
- Built-in low-voltage malfunction prevention function (VCC pin, VB pin)
- Package: SOP-16 (JEDEC compliant)
Applications
- Switching Power Supplies
Specifications
| Controller type | LLC |
|---|---|
| Applied circuit Detail | Current resonance LLC (half bridge) |
| Frequency (kHz) | Selfoscillation |
| VCC(V) | 14 to 29 |
| Built-in start up circuit (V) | 600 |
| Over load protection | Auto-Recovery |
| Over voltage protection | Auto-Recovery (VCC) |
| Package | SOP-16(N) |
Documentation Tools
| Product introduction | CRM PFC Control IC / LLC Current Resonant Control IC for High Efficiency Power Supplies FA6B20N |
|---|---|
| Reference Design | Power Supply Control IC Reference Design |
| Design tools | LLC board design tool |
| Selection Guide | Power Supply Control IC Selection Guide |
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