The SGM64A00 is a wide input voltage range synchronous Buck controller, supporting an input voltage range of 6.5V to 100V. The minimum high-side MOSFET on-time of 40ns effectively supports low duty cycle applications. The device can be directly applied to industrial-standard 48V high-voltage DC power supply systems, enabling step-down conversion to low-voltage power rails (e.g., 5V/12V). The SGM64A00 is suitable for applications with stringent requirements on input voltage fluctuations, such as industrial power supplies and communication base stations.
The SGM64A00 is feed-forward voltage-mode control architecture, which dynamically adjusts the ramp signal by sampling the input voltage (VIN) in real-time and generating a proportional ramp signal (VRAMP = VIN/kFF). This control architecture improves the transient response of the system to input voltage variations, simplifies the compensation network design, and delivers good dynamic performance and stability across a wide input voltage range.
Fixed frequency pulse width modulation (FPWM) control architecture with programmable switching frequency capability spanning 100kHz to 1MHz. It incorporates an optional discontinuous conduction mode (DCM) featuring integrated valley current detection, enabling low-side MOSFET turn-off control to minimize switching losses and reverse recovery losses during light-load operation.
The gate drive voltage is 7.5V, supporting a sink capability of 3A and a source current of 2A. An external supply can be applied to VCC to achieve higher drive voltages, supporting up to 14V for enhanced drive voltage.
The SGM64A00 features synchronization capability, allowing the gate drive signal to synchronize with the SYNCIN clock signal, while the SYNCOUT pin outputs a clock signal with a 180° phase shift relative to the HO drive signal. This function effectively reduces input voltage ripple and minimizes EMI filter size in multi-channel or cascaded power supply applications.
The SGM64A00 also integrates the following features: programmable soft-start, a power detection module with a power-good (PG) indicator, output voltage tracking (ensuring monotonic startup with pre-biased loads), hiccup mode over-current protection, and recoverable over-temperature protection.
The SGM64A00 is available in a Green TQFN-3.5×4.5-20BL package and specified over a junction temperature range of -40℃ to +150℃.
- Range of Application:
- Input Voltage Range: 6.5V to 100V
- Output Voltage Range: 0.8V to 60V
- Reference Voltage: 0.8V (±1% Accuracy)
- Fixed Switching Frequency: Adjustable, 100kHz to 1MHz
- Drive Timing Characteristics:
- High-side Minimum On-Time: 40ns
- Low-side Minimum On-Time: 150ns
- HO Turn-On Dead Time: 16ns
- LO Turn-On Dead Time: 18ns
- Drive Capability:
- Gate Drive Voltage: 7.5V
- Current Capability: 3A Sink, 2A Source
- Control Architecture: Voltage-Mode Control with Feed-Forward Compensation
- Power Management and Protection:
- EN: Configurable Power-On/Off Thresholds
- VIN UVLO: Hysteretic Under-Voltage Lockout for Input Voltage
- VCC UVLO: Hysteretic Under-Voltage Lockout for Gate Drive Supply
- Adjustable Soft-Start: Programmable Startup Time
- Conduction Mode Configuration: Selectable DCM or CCM Operation
- PGOOD: Power-Good Indicator
- Synchronization: Support Parallel or Cascaded Operation for Phase Management
- Current Sensing and Protection:
- Low-side MOSFET RDSON or External Sense Resistor Current Sensing
- Hiccup Mode Over-Current Protection
- Over-Temperature Protection: +175°C Thermal Shutdown with Hysteresis
- Available in a Green TQFN-3.5×4.5-20BL Package
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Electric Bike
Part Number | Status | Package | Pins | Pd-Free | RoHS | REACH | Green | MSL Rating | Operating Temperature Range | Material Content | Reliability Report | Unit Resale Price* (Volume Range: in USD) | Lead Time** (Volume Range: Days) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGM64A00TTVM20G/TR | Active | TQFN-3.5×4.5-20BL | 20 | YES | YES | YES | YES | MSL2 | -40℃ to +150℃ | View | View |
* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.
** The lead time provided is for reference purposes only and is subject to change based on different circumstances.
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