1

10A Synchronous Buck Regulator with Integrated

Power MOSFETs that Requires No Compensation

ISL95210

The ISL95210 single-output integrated MOSFET regulator

provides a precision voltage regulation system for point-of-load

applications. It implements a 2-bit DAC reference with tri-state

inputs for selecting a variety of regulator output voltages.

Additionally, an external resistor divider or digital voltage margining

may be used to accurately set the output voltage to a value other

than the pre-selected DAC voltages. An additional tri-state input pin

is used to set the frequency to three pre-selected values with no

need for external components.

The ISL95210 implements a modified version of Intersil’s

transient performance, while also including key performance

updates that remove the need for loop compensation and

produce highly accurate switching frequencies. These updates,

along with an integrated digital feature set, allow for a

high-performance regulator that is highly compact and needs few

external components.

Protection features of this integrated regulator IC include a set of

sophisticated overvoltage, undervoltage, overcurrent and thermal

protections. Combined, these features provide advanced protection

for the load and power system.

Related Literature

•See AN1485, “ISL95210 10A Integrated FET Regulator

Evaluation Board Setup Procedure”

Features

• True 10A Solution up to +90°C Ambient with No Air Flow

• Excellent Efficiency

- 95% Peak

- 15m

Ω High-Side

-4m

Ω Low-Side

• ±0.6% Output Voltage Accuracy Over-Temperature

- Optimal Transient Response

- No Compensation Required

• Full Digital Feature Set for Minimal Component Count

• DAC Output Voltage Control with Margining

• 32 Lead, 6mmx4mm QFN Package

Applications

• Notebook Computers

- Chipset Voltages

•MXM Graphics Card Modules

• Point of Load Applications

• General Purpose Applications

ISL95210

PG_OUT

VIN

PVCC

EN

PG_IN

VSEL0

VSEL1

MPCT

MSEL

FCCM

FSET

PGND

AGND

VCC

VOUT

PHASE

+3.3V to +5V

+1.2V

420nH

10µF

220µF

1µF

(KELVIN)

(KELVIN)

T-PAD

+5V

FIGURE 1. ISL95210 TYPICAL 800kHz APPLICATION

0

2

4

6

8

10

12

85

90

95

100

105

110

115

120

125

ISL95210 THERMAL PERFORMANCE

AMBIENT TEMPERATURE (°C)

200 LFM

100 LFM

300 LFM

AIR FLOW

0 LFM

FIGURE 2. KEY PERFORMANCE CURVE

June 2, 2011

FN6938.2

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.

All other trademarks mentioned are the property of their respective owners.