3A Dual Channel Synchronous Step-Down Switcher with Integrated FET
Product details
Parameters
Package | Pins | Size
Features
- D-CAP2 Control Mode
- Fast Transient Response
- No External Parts Required For Loop Compensation
- Compatible with Ceramic Output Capacitors
- Wide Input Voltage Range : 4.5 V to 18 V
- Output Voltage Range: 0.76 V to 7 V
- Highly Efficient Integrated FETs Optimized for
Low Duty Cycle Applications- 90 mΩ (High Side) and 60 mΩ (Low Side)
- High Initial Reference Accuracy
- Supports Constant 3 A at Both Channels
- Low-Side rDS(on) Loss-Less Current Sensing
- Fixed Soft Start : 1 ms
- Non-Sinking Pre-Biased Soft Start
- Powergood
- 700 kHz Switching Frequency
- Cycle-by-Cycle Over-Current Limit Control
- Hiccup Timer for Overload Protection
- OCL/UVLO/TSD Protections
- Adaptive Gate Drivers with Integrated Boost PMOS Switch
- OCP Constant Due To Thermally Compensated rDS(on)
with 4000ppm/°C - 16-Pin HTSSOP, 16-Pin VQFN
- Auto-Skip Eco-mode™ for High Efficiency at Light Load
Description
The TPS54394 is a dual, adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54394 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, and low standby current solution. The main control loops of the TPS54394 use the D-CAP2™ mode control which provides a very fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54394 to maintain high efficiency during lighter load conditions. The TPS54394 is able to adapt to both low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP, and ultra-low ESR, ceramic capacitors. The device provides convenient and efficient operation with input voltages from 4.5V to 18V.
The TPS54394 is available in a 4.4 mm × 5 mm 16-pin TSSOP (PWP) and 4 mm × 4 mm 16-pin VQFN (RSA) package, and is specified for an ambient temperature range from –40°C to 85°C.
Same functionality and pinout but is not an equivalent to the compared device:
Similar but not functionally equivalent to the compared device:
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | 3A Dual Channel Synchronous Step-Down Switcher with Integrated FET datasheet (Rev. B) | Aug. 20, 2013 |
| Technical articles | Minimize the impact of the MLCC shortage on your power application | Mar. 29, 2019 | |
| Technical articles | Evolution has been good for PMUs | Aug. 14, 2013 | |
| Application notes | D-CAP2 Frequency Response Model, based on frequency domain analysis of Fixed On- | Jan. 02, 2013 | |
| User guides | TPS54394 Dual Channel DC/DC Converter Evaluation Module | Jun. 12, 2012 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- 2 outputs
- DCAP2 control
- Power Good
- Non sinking pre-bias start up
- Eco-mode
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| HTSSOP (PWP) | 16 | View options |
| QFN (RSA) | 16 | View options |
Ordering & quality
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.