TPS566250_15 Datasheet, PDF (1/32 Pages) Texas Instruments – TPS566250 4.5-V to 17-V Input, 6-A Synchronous Step-Down Converter With VID Control

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TPS566250
SLVSCV3B – MARCH 2015 – REVISED JUNE 2015
TPS566250 4.5-V to 17-V Input, 6-A Synchronous Step-Down Converter With V_ID Control
1 Features
•1 Integrated FETs Optimized for Lower Duty Cycle
Applications
– 44 mΩ (High Side) and 23 mΩ (Low Side)
• Output Voltage Range: 0.6 V to 1.87 V with
5.5-mV Feedback Voltage Step
• V_ID Control with Multibyte Interface with
Read-Back
• ±1% Output Voltage at 25°C for V_ID Control at
12 V V_IN / 1.1 V V_OUT
• D-CAP2™ Control Mode
• Advanced Eco-mode™ for High Efficiency at Light
Load and Low Output Voltage Ripple
• 650-kHz Switching Frequency
• Fixed Soft Start: 1 ms
• Monotonic Pre-Biased Soft Start
• Hiccup Timer for Overload Protection
2 Applications
• Media Processors for Consumer Applications:
Digital TVs, Set Top Boxes
• System On-Chip Power
• High Density Power Distribution Systems
3 Description
The TPS566250 is a synchronous buck converter that
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.
After the initial power-up, the output voltage can be
changed by codes sent to the IC via an I²C
compatible V_ID Control bus.
The main control loops of the TPS566250 use the D-
CAP2™ mode control which provides a fast transient
response with no external compensation
components. The adaptive on-time control supports
seamless transition between PWM mode at higher
load conditions and Advanced Eco-mode™ operation
at light loads. Advanced Eco-mode™ allows the
TPS566250 to maintain high efficiency during lighter
load conditions. The TPS566250 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 offers on chip overcurrent, undervoltage
lockout and thermal shutdown protection.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS566250
HSOP (8)
4.90 mm x 3.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Simplified Schematic
VIN
VOUT
EN
SDA
SCL
1 _EN
VIN ⁸
2
FB
7
BOOT
3 _SDA
SW ⁶
4
SCL
5
GND
PowerP AD
VOUT
Load Transient Response
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.