Overview
The FAN7387MX, produced by onsemi, is a self-oscillated, high-voltage gate driver IC designed for various power conversion applications. It is particularly suited for common half-bridge inverters, Switch-Mode Power Supplies (SMPS), and ballast solutions for fluorescent and High-Intensity Discharge (HID) lamps. The device features an internal oscillating circuit that can be set using external resistors and capacitors, providing a stable frequency across a wide temperature range. It also includes dead-time control, shutdown functionality, and under-voltage lockout (UVLO) to ensure reliable operation.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD) | 9.50 | 11.00 | 12.50 | V |
| Output Current (IO+) | - | - | 350 | mA |
| Output Current (IO-) | - | - | 650 | mA |
| Turn-On Propagation Time (tON) | - | 550 | - | ns |
| Turn-Off Propagation Time (tOFF) | - | 160 | - | ns |
| Dead-Time (tD) | 500 | 600 | 700 | ns |
| Operating Temperature | -40 | - | 125 | °C |
| Package Type | - | - | 8-SOP | - |
| Pin Count | - | - | 8 | - |
Key Features
- Internal clock using RCT (resistor-capacitor timing) for frequency setting.
- External sync function using RCT for synchronization.
- Dead-time control using an external resistor to minimize power loss.
- Shutdown (disable mode) for power management.
- Internal shunt regulator for stable operation.
- Under-voltage lockout (UVLO) function for both low-side and high-side blocks.
- Half-bridge inverter and SMPS support.
- Ballast solutions for fluorescent and HID lamps.
Applications
- Half-bridge inverters.
- Switch-Mode Power Supplies (SMPS).
- Ballast for fluorescent lamps.
- Ballast for High-Intensity Discharge (HID) lamps.
- Full-bridge converters.
Q & A
- What is the FAN7387MX used for? The FAN7387MX is used for half-bridge inverters, SMPS, and ballast solutions for fluorescent and HID lamps.
- What is the operating temperature range of the FAN7387MX? The operating temperature range is -40°C to +125°C.
- How is the frequency set in the FAN7387MX? The frequency is set using an external resistor and capacitor (RCT).
- Does the FAN7387MX have a shutdown feature? Yes, it has a shutdown feature controlled by an external switch.
- What is the output current capability of the FAN7387MX? The output current is up to 350 mA for the high-side and up to 650 mA for the low-side.
- What package type is the FAN7387MX available in? It is available in an 8-pin SOP package.
- Does the FAN7387MX support UVLO? Yes, it has under-voltage lockout (UVLO) for both low-side and high-side blocks.
- Can the FAN7387MX be used in full-bridge converters? Yes, it can be used in full-bridge converter applications.
- Is the FAN7387MX still recommended for new designs? No, the FAN7387MX is discontinued and not recommended for new designs.
- How is dead-time controlled in the FAN7387MX? Dead-time is controlled using an external resistor (RDT).
