ZL9101MIRZ Intersil, ZL9101MIRZ Datasheet

ZL9101MIRZ

Manufacturer Part Number

ZL9101MIRZ

Description

Stand Alone Digital 10A DC/DC Step Down Power Supply Module

Manufacturer

Intersil

Datasheets

1.ZL9101M.pdf (17 pages)

2.ZL9101MIRZ.pdf (17 pages)

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Digital DC/DC PMBus 12A Module

ZL9101M

The ZL9101M is a 12A variable output step-down

PMBus-compliant digital power supply. Included in the module

is a high performance digital PWM controller, power MOSFETs,

an inductor, and all the passive components required for a

complete DC/DC power solution. The ZL9101M operates over

a wide input voltage range and supports an output voltage

range of 0.6V to 4V, which can be set by external resistors or

via PMBus. This high efficiency power module is capable of

delivering 12A. Only bulk input and output capacitors are

needed to finish the design. The output voltage can be

precisely regulated to as low as 0.6V with ±1% output voltage

regulation over line, load, and temperature variations.

The ZL9101M features internal compensation, internal

soft-start, auto-recovery overcurrent protection, an enable

option, and pre-biased output start-up capabilities.

The ZL9101M is packaged in a thermally enhanced, compact

(15mmx15mm) and low profile (3.5mm) over-molded QFN

package module suitable for automated assembly by standard

surface mount equipment. The ZL9101M is Pb-free and RoHS

compliant.

NOTE: Figure 1 represents a typical implementation of the ZL9101M. For PMBus operation, it is recommended to tie the enable pin (EN) to SGND.

January 26, 2011

FN7669.1

POWER GOOD OUTPUT

Notes:

1. The I

2. The DDC bus requires a pull-up resistor. The resistance will vary based on the capacitive loading of the bus (and on the number of

devices connected). The 10k

Please refer to the Digital-DC Bus section for more details.

3. Additional capacitance may be required to meet specific transient response targets

4. The VR, V25, VDRV, and VDD capacitors should be placed no further than 0.5 cm from the pin.

ENABLE

C/SMBus requires pull-up resistors. Please refer to the I

Ext Sync

4.5V TO 6.5V

DDC Bus

C/SMBus

default value, assuming a maximum of 100pF per device, provides the necessary 1µs pull-up rise time.

DRV

SYNC

SCL

SDA

DDC

FIGURE 1. 12A APPLICATION CIRCUIT

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

10µF

16V

ZL9101M

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

4.7µF

16V

C/SMBus specifications for more details.

4.7µF

16V

(EPAD)

PGND

(EPAD)

VOUT

VIN

Features

• Complete Digital Switch Mode Power Supply

• Fast Transient Response

• External Synchronization

• Output Voltage Tracking

• Current Sharing

• Programmable Soft-start Delay and Ramp

• Overcurrent/Undercurrent Protection

• PMBus Compliant

Applications

• Server, Telecom, and Datacom

• Industrial and Medical Equipment

• General Purpose Point of Load

Related Literature

• See AN2033, “Zilker Labs PMBus Command Set - DDC

• See AN2034, “Configuring Current Sharing on the ZL2004

10µF

16V

Products”

and ZL2006”

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

Intersil (and design) is a registered trademark of Intersil Americas Inc.

3 x 47µF

16V

5V TO 12V

2 x 22µF

16V

RTN

OUT

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