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TPS54561QDPRRQ1

Automotive 4.5V to 60V Input 5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™

Manufacturer:

TI
Mfr.Part #:

TPS54561QDPRRQ1
Datasheet:

TPS54561QDPRRQ1 Datasheet (PDF)
Vin (min) (V):

4.5
Vin (max) (V):

60
Vout (min) (V):

0.8
Vout (max) (V):

59
EDA/CAD Models:

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TPS54561QDPRRQ1 General Description

The TPS54561-Q1 device is a 60-V, 5-A, step-down regulator with an integrated high-side MOSFET. The device survives load dump pulses up to 65 V per ISO7637. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode and 152-µA supply current enables high efficiency at light loads. Pulling the enable pin low reduces shutdown supply current to 2 µA.

Undervoltage lockout has an internal 4.3-V setting. Use of an external resistor divider at the EN pin can increase the setting. The soft-start pin controls the output-voltage start-up ramp and also configures sequencing or tracking. An open-drain power-good signal indicates the output is within 93% to 106% of its nominal voltage.

A wide adjustable switching-frequency range allows optimization for either efficiency or external component size. Cycle-by-cycle current limit, frequency foldback, and thermal shutdown protect the device during an overload condition.

The TPS54561-Q1 is available in a 10-pin, 4-mm × 4-mm WSON package.

Key Features

Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
- Device HBM ESD Classification H1C
- Device CDM ESD Classification C5
High Efficiency at Light Loads With Pulse-Skipping Eco-mode™ Control
87-mΩ High-Side MOSFET
152-µA Operating Quiescent Current and 2-µA Shutdown Current
100-kHz to 2.5-MHz Switching Frequency
Synchronizes to External Clock
Low-Dropout Operation at Light Loads With Integrated BOOT Recharge FET
Adjustable UVLO Voltage and Hysteresis
Power-Good Output Monitor for Undervoltage and Overvoltage
Adjustable Soft-Start and Sequencing
0.8-V 1% Internal Voltage Reference
10-Pin WSON With Thermal Pad Package
–40°C to 150°C T_J Operating Range
Create a Custom Design using the TPS54561-Q1 with the WEBENCH® Power Designer

Specifications

Vin (min) (V)	4.5	Vin (max) (V)	60
Vout (min) (V)	0.8	Vout (max) (V)	59
Iout (max) (A)	5	Iq (typ) (mA)	1.52
Switching frequency (min) (kHz)	100	Switching frequency (max) (kHz)	2500
Features	Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Adjustable, Tracking, UVLO adjustable	Operating temperature range (°C)	-40 to 125
Rating	Automotive	Regulated outputs (#)	1
Control mode	current mode	Duty cycle (max) (%)	98
Type	Converter