Overview
The SRK2000D, produced by STMicroelectronics, is a synchronous rectifier smart driver designed for secondary side synchronous rectification in LLC resonant converters. This IC is optimized for high-efficiency power conversion and is particularly suited for applications requiring precise control over synchronous rectifier MOSFETs. The SRK2000D integrates advanced features such as protection against current reversal, intelligent automatic sleep mode, and matched turn-off thresholds, making it an ideal choice for various high-power applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 4.5 to 32 | V |
| Quiescent Consumption | 250 µA | µA |
| Operating Frequency | Up to 500 kHz | kHz |
| Gate Drive Current | 1 A source, 3.5 A sink | A |
| Package | SO-8 | |
| Junction Temperature Range | -40 to 150 °C | °C |
| Turn-on Threshold | 4.25 to 4.75 V | V |
| Turn-off Threshold | 4 to 4.5 V | V |
Key Features
- Secondary side synchronous rectifier controller optimized for LLC resonant converters.
- Protection against current reversal.
- Safe management of load transient, light load, and startup conditions.
- Matched turn-off thresholds.
- Intelligent automatic sleep mode at light load to improve converter efficiency.
- Dual gate driver for N-channel MOSFETs with high current drive capability.
- Programmable UVLO (Under Voltage Lock Out) with hysteresis.
- Low external component count required.
Applications
- All-in-one PC power supplies.
- High-power AC-DC adapters.
- 80+/85+ compliant ATX SMPS (Switch-Mode Power Supplies).
- 90+/92+ compliant server SMPS.
- Industrial SMPS.
Q & A
- What is the primary function of the SRK2000D?
The SRK2000D is a synchronous rectifier smart driver designed for secondary side synchronous rectification in LLC resonant converters.
- What is the operating voltage range of the SRK2000D?
The operating voltage range is from 4.5 to 32 V.
- What is the quiescent consumption of the SRK2000D?
The quiescent consumption is 250 µA.
- What is the maximum operating frequency of the SRK2000D?
The maximum operating frequency is up to 500 kHz.
- What type of gate drive current does the SRK2000D provide?
The SRK2000D provides 1 A source and 3.5 A sink gate drive current.
- What package type is the SRK2000D available in?
The SRK2000D is available in an SO-8 package.
- What are the key applications of the SRK2000D?
The key applications include all-in-one PC power supplies, high-power AC-DC adapters, 80+/85+ compliant ATX SMPS, 90+/92+ compliant server SMPS, and industrial SMPS.
- How does the SRK2000D manage light load conditions?
The SRK2000D features an intelligent automatic sleep mode at light load to improve converter efficiency.
- What protection features does the SRK2000D offer?
The SRK2000D offers protection against current reversal and safe management of load transient, light load, and startup conditions.
- How does the SRK2000D prevent simultaneous conduction of MOSFETs?
The SRK2000D uses interlocking logic to prevent simultaneous conduction of the two synchronous rectifier MOSFETs.
