PS5164 Datasheet PS5164 | P4-P6

PS5164

DS21850B-page 4  2004 Microchip Technology Inc.

2.0 FUNCTIONAL DESCRIPTION

2.1 PS501 Fuel Gauge

The module fuel gauge provides State-Of-Charge

(SOC) and battery status data in accordance with the

SMBus standards version 1.1. The PS501 monitors the

cell voltages, battery temperature and current to deter-

mine SOC and battery status. The State-Of-Charge

calculations are compensated for cell self-discharge.

The remaining time calculation is compensated for

temperature and discharge rate. The parameters for

determining battery status flags and alarm thresholds

are all programmable, as is the battery design capacity

and the battery performance model data. Please refer

to the “PS501 Data Sheet” (DS21818) for details on

configuring the PS501.

2.2 Primary Safety

The primary safety circuit provides cell protection from

conditions of overcharge, overdischarge and over-

current. The analog safety IC measures individual cell

voltages, current and voltage across the safety FETs.

These values are compared against internal reference

values and the gates of two N-channel power

MOSFETs are controlled based on the comparison

results.

3.0 BOARD DESCRIPTION

PCB schematics and bill of materials are included here

for completeness. To download the full size schematic

and BOM, please visit the Microchip web site.

3.1 Mechanical Dimensions

Overall Dimensions: 2500 mils x 525 mils

 2004 Microchip Technology Inc. DS21850B-page 5

PS5164

3.2 Schematic

FIGURE 3-1: PS5164 BOARD SCHEMATIC

1 2 3 4 56

54321

Microchip Technology, Inc.

PowerSmart Products Group

2745 Dallas Parkway, Suite 400

Plano, TX 75093 469-241-0087 Voice/469-241-0106 Fax

PS5164 SCHEMATIC

03-826170 3.1

15-Mar-2004

13:25:09

03-826170 REV 3-1.sch

Sheet of

*** CONFIDENTIAL ***

THIS DOCUMENT CONTAINS

PROPRIETARY INFORMATION

THAT IS THE INTELLECTUAL

PROPERTY OF MICROCHIP

TECHNOLOGY, INC.

SIZE DRAWING NO.CODE IDENT NO. REV

FILESCALE

NONE

TITLE

APPROVALS DATE

CONTRACT NO.

http://www.microchip.com

DRAWN

CHECKED

100 nF

NDS355N

R111.0K

R121.0K

R131.0K

R141.0K

R1551

10 nF

100 nF

R31

5.1K

CELL

CONNECTION

CURRENT

SENSE

RESISTOR

EXTERNAL THERMISTOR CONNECTIONS

(SEMITEC 103AT OR 103ETB -- 10K AT 25°C)

R26

221K

330 nF

C16

100 nF

SFD167A

330 nF

R36

0.020

R2240

R3240

R4240

LED0

LED1

LED2

LED3

3.65K

R16

SW1

R. CASEBOLT 11/21/2003

REMOVE R16 IF AN

EXTERNAL THERMISTOR

IS USED

IRF7424

GROUND PLANE

CONNECTION

FOR REVISION HISTORY, REFER TO 826170 CHANGE LOG.

IO7-PGD

IO6-PGC

MCLR

R19

220

ICD PORT

C17

100 nF

R35365

PACK

CONNECTIONS

B+

D1 AZ23C5V6

B+

B-

C18

1.0 nF

R720

R820

R9240

R10240

R120

R620K R17

20K

IO6-PGC

IO7-PGD

MCLR

SSAFE

IO5

COP

DOP

CDT

SEL

CCT

VSS

VINI

CTL

VC4

VC3

VC2

VC1

VDD

VMP

S8254A

R23

5.1K

R21

1.0M

PRIMARY SAFETY CIRCUIT

WITH CAPACITOR VALUES SHOWN:

OVERVOLTAGE TIME DELAY: 100 mSEC

UNDERVOLTAGE TIME DELAY: 100mSEC

OVERCURRENT TIME DELAY: 10 mSEC

VDDD

GPIO(4)

GPIO(5)

GPIO(6)

GPIO(7)

SMB-CLK

SMB-DTA

VC(4)

VC(3)

VC(2)

VC(1)

VDDA

VSSA

RSHP

RSHN

VNTC

VREFT

ROSC

GPIO(8)

GPIO(9)

GPIOHV1

MCLR

GPIOHV2

GPIO(0)

GPIO(1)

GPIO(2)

GPIO(3)

VSSD

U1 PS501

PS501-BASED REFERENCE DESIGN FOR 4-CELL Li-ION APPLICATIONS.

BNAUX

IO4

HV1

HV2

HV1

HV2

IO4

LED0

LED1

LED2

LED3

C12

100 nF

C11

100 nF

C13

100 nF

C14

100 nF

C15

2.2 µF

IO5

VDDD

CAUTION:

WHEN USING ICD PORT,

A 10K RESISTOR MUST

BE CONNECTED BETWEEN

VDDD AND BNAUX.

PS5164

DS21850B-page 6  2004 Microchip Technology Inc.

3.3 Bill of Materials

TABLE 3-1: PS5164 BILL OF MATERIALS

Symbols Description Manufacturer Manufacturer PN Qty.

Raw PCB, PS5164 Microchip 04-826170 REV. 3.1 1

C9 Capacitor, Ceramic, 10 nF, 25V, +/-10%,

X7R dielectric, 0603

Panasonic ECJ-1VB1E103K 1

C18 Capacitor, Ceramic, 1.0 nF, 50V, +/-10%,

X7R dielectric, 0603

Panasonic ECJ-1VB1H102K 1

C2-C4, C11-C14,

C16-C17

Capacitor, Ceramic, 100 nF, 25V, +80%/-20%,

Y5V dielectric, 0603

Panasonic ECJ-1VF1E104Z 9

C8 Capacitor, Ceramic, 100 nF, 25V, +/-10%,

X7R dielectric, 0805

Panasonic ECJ-2VB1E104K 1

C1, C5, C7 Capacitor, Ceramic, 330 nF, 25V, +80%/-20%,

Y5V dielectric, 0805

Panasonic ECJ-2YF1E334Z 3

C15 Capacitor, Ceramic, 2.2 µF, 25V, +80%/-20%,

Y5V dielectric, 1206

Panasonic ECJ-3YF1E225Z 1

LED0-LED3 LED, clear green, 1206 package Lumex SML-LX1206GC-TR 4

D1 Dual Zener Diode, 5.6V, +/-5%, 300 mW, common anode,

SOT-23

Diodes Inc.

General Semi.

AZ23C5V6-7

AZ23-C5V6

F1 Fuse, battery pack protector, 7A, 36 V

DC, 50A breaking

capacity, 5 +/- 1.5 mOhm resistance, 31.6 +/- 3.2 ohms

heater resistance, 11.1-25.0V heater operating voltage

range, UL248-14, 3-terminal surface mount package

Sony Chemicals SFD-167A 1

Q1-Q2 MOSFET, P-channel Enhancement mode, -30V, 11A,

13.5 mOhms, 1.9W, SO-8

Int. Rectifier

Toshiba

IRF7424

TPC8108

Q3 MOSFET, N-channel Enhancement mode, 30V, 1.6A,

0.125 ohms, 500 mW, SOT-23

Fairchild Semi.

NDS355N

NDS355AN

R5 Resistor, film, 0603, 1%, 3.65 KOhms Panasonic ERJ-3EKF3651V 1

R35 Resistor, film, 0603, 1%, 365 ohms Panasonic ERJ-3EKF3650V 1

R26 Resistor, film, 0603, 1%, 221 KOhms, 25 ppm, TC Susumu Co. Ltd. RR0816P-2213-D-34D 1

R16 Resistor, zero ohm, 0603 Panasonic ERJ-3GEY0R00V 1

R11-R14 Resistor, film, 0603, 5%, 1.0 KOhms Panasonic ERJ-3GEYJ102V 4

R21 Resistor, film, 0603, 5%, 1.0 Megohms Panasonic ERJ-3GEYJ105V 1

R7-R8 Resistor, film, 0603, 5%, 20 ohms Panasonic ERJ-3GEYJ200V 2

R6, R17 Resistor, film, 0603, 5%, 20 KOhms Panasonic ERJ-3GEYJ203V 2

R19 Resistor, film, 0603, 5%, 220 ohms Panasonic ERJ-3GEYJ221V 1

R23, R31 Resistor, film, 0603, 5%, 5.1 KOhms Panasonic ERJ-3GEYJ512V 2

R15 Resistor, film, 0603, 5%, 51 ohms Panasonic ERJ-3GEYJ510V 1

R1 Resistor, film, 0805, 5%, 20 ohms Panasonic ERJ-6GEYJ200V 1

R2-R4 Resistor, film, 0805, 5%, 240 ohms Panasonic ERJ-6GEYJ241V 3

R9-R10 Resistor, film, 1206, 5%, 240 ohms Panasonic ERJ-8GEYJ241V 2

R36 Resistor, metal strip, 2512, 1%, 0.020 ohms Vishay WSL2512-0.020-1%-R86 1

SW1 Switch, SPST-momentary, push button, surface mount ALPS SKQGADE010 1

U1 IC, Single chip Battery Manager, programmable,

25°C to 85°C, SSOP-28

Microchip PS501-I/ST 1

U2 IC, Battery Protection Circuit, Li Ion, 3 or 4-cell,

40°C to 85°C, 4.4 mm body width TSSOP-16 package

Seiko Instruments S-8254AAJFT-TB

(Note 1)

Note 1: Other variants of the S-8254A series, with different trip points, are also available. Consult the S-8254A series data sheet.

P1-P3 P4-P6 P7-P9 P10-P10

PS5164

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Power Management Modules 2 CELL LI ION/POLY

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PS5164