ISL68200 Datasheet, PDF (1/32 Pages) Intersil Corporation – Single-Phase R4 Digital Hybrid PWM Controller with Integrated Driver

DATASHEET
Single-Phase R4™ Digital Hybrid PWM Controller with
Integrated Driver, PMBus/SMBus/I²C and PFM
ISL68200
The ISL68200 is a single-phase synchronous-buck PWM
controller featuring Intersil’s proprietary R4™ Technology. It
supports a wide 4.5V to 24V input voltage range and a wide
0.5V to 5.5V output range. Integrated LDOs provide controller
bias voltage, allowing for single supply operation. The
ISL68200 includes a PMBus/SMBus/I²C interface for device
configuration and telemetry (V_IN, V_OUT, I_OUT and temperature)
and fault reporting.
Intersil’s proprietary R4™ control scheme has extremely fast
transient performance, accurately regulated frequency control
and all internal compensation. An efficiency enhancing PFM
mode can be enabled to greatly improve light-load efficiency.
The ISL68200’s series bus allows for easy R4™ loop
optimization, resulting in fast transient performance over a
wide range of applications, including all ceramic output filters.
Built-in MOSFET drivers minimize external components,
significantly reducing design complexity and board space,
while also lowering BOM cost. The 4A drive strength allows for
faster switching time, improving regulator efficiency. An
integrated high-side gate-to-source resistor helps avoid Miller
coupling shoot-through and improve system reliability.
The ISL68200 has four 8-bit configuration pins, which provide
very flexible configuration options (frequency, V_OUT, R4™ gain,
etc.) without the need for built-in NVM memory. This results in
a design flow that closely matches traditional analog
controllers, while still offering the design flexibility and feature
set of a digital PMBus/SMBus/I²C interface. The ISL68200
also features remote voltage sensing and completely eliminates
any potential difference between remote and local grounds. This
improves regulation and protection accuracy. A precision enable
input is available to coordinate the start-up of the ISL68200 with
other voltage rails, especially useful for power sequencing.
Applications
• High efficiency and high density POL digital power
• FPGA, ASIC and memory supplies
• Datacenter: servers, storage systems
• Wired infrastructure: routers/switches/optical networking
• Wireless infrastructure: base station
Features
• Intersil’s proprietary R4™ Technology
- Linear control loop for optimal transient response
- Variable frequency and duty cycle control during load
transient for fastest possible response
- Inherent voltage feed-forward for wide range input
• Input voltage range: 4.5V to 24V
• Output voltage range: 0.5V to 5.5V
• ±0.5% DAC accuracy with remote sense
• Support all ceramic solutions
• Integrated LDOs for single input rail solution
• SMBus/PMBus/I²C compatible, up to 1.25MHz
• 256 boot-up voltage levels with a configuration pin
• Eight switching frequency options from 300kHz to 1.5MHz
• PFM operation option for improved light-load efficiency
• Start-up into precharged load
• Precision enable input to set higher input UVLO and power
sequence as well as fault reset
• Power-good monitor for soft-start and fault detection
• Comprehensive fault protection for high system reliability
- Over-temperature protection
- Output overcurrent and short-circuit protection
- Output overvoltage and undervoltage protection
- Open remote sense protection
- Integrated high-side gate-to-source resistor to prevent self
turn-on due to high input bus dv/dt
• Integrated power MOSFETs 4A drivers with adaptive
shoot-through protection and bootstrap function
• Compatible with Intersil’s PowerNavigator™ software
Related Literature
UG067, “ISL68200DEMO1Z Demonstration Board User Guide”
PART
NUMBER
ISL68200
ISL68201
INTEGRATED
DRIVER
Yes
No
TABLE 1. SINGLE-PHASE R4™ DIGITAL HYBRID PWM CONTROLLER OPTIONS
PWM
OUTPUT
PMBus/SMBus/I²C
INTERFACE
COMPATIBLE DEVICES
No
Yes
Discrete MOSFETs or Dual Channel MOSFETs
Yes
Yes
Intersil Power Stages: ISL99140
Intersil Drivers: ISL6596, ISL6609, ISL6627, ISL6622, ISL6208
March 7, 2016
FN8705.1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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