TPS54320RHLR
Features
1.Integrated 57-mΩ / 50-mΩ MOSFETs
2.Split Power Rail: 1.6 to 17 V on PVIN
3.200-kHz to 1.2-MHz Switching Frequency
4.Synchronizes to External Clock
5.0.8-V Voltage Reference With ±1% Accuracy
6.Low 2-µA Shutdown Quiescent Current
7.Hiccup Overcurrent Protection
8.Monotonic Start-Up into Prebiased Outputs
9.–40°C to 150°C Operating Junction Temperature
Range
1.Pin-to-Pin Compatible With the TPS54620
2.Adjustable Slow Start/Power Sequencing
3.Power Good Output for Undervoltage and
Overvoltage Monitoring
1.Adjustable Input Undervoltage Lockout (UVLO)
2.Supported by SwitcherPro™ Software Tool
3.For SWIFT™ Documentation and SwitcherPro,
Visit www.ti.com/swift
Create a Custom Design Using the TPS54320
With the WEBENCH® Power Designer
Applications
1.Broadband, Networking, and Communication
Infrastructure
2.Automated Test and Medical Equipment
3.DSP and FPGA Point-of-Load Applications from
12-V Bus
Description
The TPS54320 is a full-featured 17-V, 3-Asynchronous step-down converter which is optimized for small designs through high efficiency and integrated high-side and low-side MOSFETs. Further space savings are achieved through current mode control, which reduces component count, and by
selecting a high switching frequency, reducing footprint of the inductor.The output voltage start-up ramp is controlled by the SS/TR pin which allows operation as either a standalone power supply or in tracking situations. Power sequencing is also possible by correctly configuring the enable and the open drain power good pins. Cycle by cycle current limiting on the high-side FET protects the device in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. Hiccup protection is triggered if the overcurrent condition has persisted for longer than the preset time. Thermal shutdown disables the part when die temperature exceeds thermal shutdown temperature. The TPS54320 is available in a 14-pin, 3.5-mm × 3.5-mm VQFN,thermally enhanced package.Device Information PART NUMBER PACKAGE BODY SIZE (NOM) TPS54320 VQFN (14) 3.50 mm × 3.50 mm For all available packages, see the orderable addendum at the end of the data sheet.
