Fairchild FAN48610, FEBFAN48610-M00LPOLA User Manual

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User Guide for

FEBFAN48610_M00LPOLA

Evaluation Board

Synchronous Boost Regulator with

Pass-Through Mode

Featured Fairchild Product:

FAN48610

Direct questions or comments

about this evaluation board to:

“Worldwide Direct Support”

Fairchild Semiconductor.com

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Table of Contents

1. Description ................................................................................................................................ 3

1.1. Features ............................................................................................................................ 3

1.2. Quick Start Connection Guide ......................................................................................... 4

2. Bill of Materials ........................................................................................................................ 4

3. Evaluation Board Special Features ........................................................................................... 5

3.1. On-Board Load Current Control ...................................................................................... 5

3.2. Input / Output Capacitance ............................................................................................... 5

3.3. ENABLE Header (J4) ...................................................................................................... 5

3.4. Signal Monitoring ............................................................................................................ 5

4. Printed Circuit Board ................................................................................................................ 6

5. Schematic .................................................................................................................................. 9

6. Revision History ..................................................................................................................... 10

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This user guide supports the evaluation kit for the FAN48610. It should be used in conjunction with the FAN48610 datasheet as well as Fairchild’s application notes and technical support team. Please visit Fairchild’s website at www.fairchildsemi.com.

1. Description

The FAN48610 evaluation board is a compact circuit including Fairchild’s FAN48610 synchronous boost regulator with Pass-Through Mode in a 9-bump Wafer-Level ChipScale Package (WLCSP). Small input/output capacitors and a 470 nH inductor ensure smooth output regulation.

The board also features an on-board active load circuit and footprints to accommodate additional input/output capacitors. The evaluation board provides probe access points to all key circuit nodes so that electrical characteristics can be measured.

1.1. Features

 Input Voltage Range: 2.35 V to 5.50 V  Output Voltages Range: 3.0 V to 5.0 V  I  I  Up to 94% Efficient  Automatic Pass-Through Operation when V  Internal Synchronous Rectification  Soft-Start with True Load Disconnect  Short-Circuit Protection  9-Bump, 1.215 mm x 1.215 mm, 0.4 mm Pitch WLCSP  Three External Components: 2016 0.47 H Inductor, 0603 Case Size Input / Output

≥ 1 A at V

OUT

≥ 1.5 A at V

OUT

Capacitors

=5.0 V, VIN ≥ 2.5 V

OUT

=5.0 V, VIN ≥ 3.0 V

OUT

> V

OUT

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1.2. Quick Start Connection Guide

Reference

Qty.

Description

Manufacturer

IC, FAN48610 (WLCSP 9)

Fairchild Semiconductor

470 nH, 3.2 A, 40 mΩ, 20%, 2016

TOKO DFE201612C-R47M

NMOS, 30 V, 2 A, SC70-6

Fairchild Semiconductor FDG315N

CIN

10 µF, 6.3 V, 10%, X5R, 0603

TDK C1608X5R0J106K080AB

OUT1

22 µF, 6.3 V, 20%, X5R, 0603

TDK C1608X5R0J226M080AC

R2 1 20 kΩ, 5%, 0402

R8 1 1.0 Ω, 1%, 2010

R11 1 1.0 kΩ, 5%, 0402

R7, R14, R15, R16

No Load 0402

OUT2

, C1 2 No Load 0603

C2 1 No Load ALEL

LOAD

INPUT

1. Connect VIN to input power supply (2.35V -5.50 V) as shown in Figure 1.

2. Set EN header (J4) at the ‘1’ position with a jumper.

3. Connect the external load between VOUT and PGND.

4. Kelvin connected input and output voltage-sense points (VIN_S, VOUT_S) are

provided. Measure relative to AGND.

Figure 1. Evaluation Board Connection Diagram Evaluation Board Specifications

2. Bill of Materials

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3. Evaluation Board Special Features

1Ω

XIENT

PGND

FGEN

GATE

VOUT

Load (mA)

VGATE (V)

1.80

1.85

200

2.00

3.1. On-Board Load Current Control

Most electronic loads cannot generate the kind of high-speed load transients that occur in modern applications.

To facilitate these high-speed transient edges (~100 ns), the FAN48610 evaluation board includes a MOSFET (Q1) and a 1 Ω current-sense resistor (R8) connected to VOUT (see Figure 2). This circuit is not rated for the dissipation associated with DC loads. 10% maximum duty cycle is recommended.

Figure 2. On-Board Load Current Control

The NFET is wired as a source follower to provide simple amplitude and rise/fall time control. It can be driven by a pulse generator. The load current step depends on the applied GATE voltage and I temperature. To simplify the load current setup, a precision 1 Ω sense resistor allows the load current to be read at a 1 mV/1 mA rate on the XIENT pin.

characteristic of the NFET at ambient operating

d(Vgs)

Table 1. Typical V

3.2. Input / Output Capacitance

The FAN48610 evaluation board includes empty locations for the addition of input or output capacitance.

The C2 location should be used to provide a suitable local charge reservoir when inductance is introduced by long cables from the DC source.

3.3. ENABLE Header (J4)

The ENABLE header is set to ‘1’ position by default. To disable the FAN48610, move the EN jumper to the ‘0’ position.

3.4. Signal Monitoring

VIN_S, VOUT_S, and EN signals can be monitored with an oscilloscope probe at headers, as shown in Figure 1. Measure relative to AGND.

For best output ripple measurements, do not use VOUT_S; instead monitor directly

across the output capacitor with an oscilloscope probe.

to Load Dependence

GATE

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4. Printed Circuit Board

Figure 3. Top-Side Silk Screen

Figure 4. Bottom-Side Silk Screen

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Figure 5. Top Layer

Figure 6. Mid-Layer 1

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Figure 7. Mid-Layer 2

Figure 8. Bottom Layers

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5. Schematic

Figure 9. Evaluation Board Schematic

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Rev.

Date

Description

1.0.0

November 2013

Initial Release

6. Revision History

WARNING AND DISCLAIMER

Replace components on the Evaluation Board only with those parts shown on the parts list (or Bill of Materials) in the Users’ Guide. Contact an authorized Fairchild representative with any questions.

This board is intended to be used by certified professionals, in a lab environment, following proper safety procedures. Use at your own risk. The Evaluation board (or kit) is for demonstration purposes only and neither the Board nor this User’s Guide constitute a sales contract or create any kind of warranty, whether express or implied, as to the applications or products involved. Fairchild warrantees that its products meet Fairchild’s published specifications, but does not guarantee that its products work in any specific application. Fairchild reserves the right to make changes without notice to any products described herein to improve reliability, function, or design. Either the applicable sales contract signed by Fairchild and Buyer or, if no contract exists, Fairchild’s standard Terms and Conditions on the back of Fairchild invoices, govern the terms of sale of the products described herein.

DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO

IMPROVE RELIABILITY, FUNCTION, OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS

WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user.

ANTI-COUNTERFEITING POLICY

Fairchild Semiconductor Corporation's Anti-Counterfeiting Policy. Fairchild's Anti-Counterfeiting Policy is also stated on our external website, www.fairchildsemi.com, under Sales Support.

Counterfeiting of semiconductor parts is a growing problem in the industry. All manufacturers of semiconductor products are experiencing counterfeiting of their parts. Customers who inadvertently purchase counterfeit parts experience many problems such as loss of brand reputation, substandard performance, failed applications, and increased cost of production and manufacturing delays. Fairchild is taking strong measures to protect ourselves and our customers from the proliferation of counterfeit parts. Fairchild strongly encourages customers to purchase Fairchild parts either directly from Fairchild or from Authorized Fairchild Distributors who are listed by country on our web page cited above. Products customers buy either from Fairchild directly or from Authorized Fairchild Distributors are genuine parts, have full traceability, meet Fairchild's quality standards for handling and storage and provide access to Fairchild's full range of up-to-date technical and product information. Fairchild and our Authorized Distributors will stand behind all warranties and will appropriately address any warranty issues that may arise. Fairchild will not provide any warranty coverage or other assistance for parts bought from Unauthorized Sources. Fairchild is committed to combat this global problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized distributors.

EXPORT COMPLIANCE STATEMENT

These commodities, technology, or software were exported from the United States in accordance with the Export Administration Regulations for the ultimate destination listed on the commercial invoice. Diversion contrary to U.S. law is prohibited.

U.S. origin products and products made with U.S. origin technology are subject to U.S Re-export laws. In the event of re-export, the user will be responsible to ensure the appropriate U.S. export regulations are followed.

2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

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