Texas Instruments bq24750A User manual

User's Guide
SLUU283D–May 2007–Revised March 2010
bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi
Cell Synchronous Notebook Charger and System Power
Selector
Contents
1 Introduction .................................................................................................................. 1
2 Test Summary ............................................................................................................... 4
3 PCB Layout Guideline ...................................................................................................... 8
4 Bill of Materials, Board Layout and Schematics ........................................................................ 9
List of Figures
1 Original Test Setup for HPA207-001, -004, or -005 ................................................................... 5
2 Original Test Setup for HPA207-002, -003, -006, or -007 ............................................................ 6
3 Test Setup for HPA207-001, -004, or -005 ............................................................................. 7
4 Test Setup for HPA207-002, -003, -006, or -007 ...................................................................... 7
5 Top Layer................................................................................................................... 12
6 2nd Layer .................................................................................................................... 13
7 3rd Layer..................................................................................................................... 14
8 Bottom Layer............................................................................................................... 15
9 Top Assembly.............................................................................................................. 16
10 Bottom Assembly.......................................................................................................... 17
11 Top Silk ..................................................................................................................... 18
List of Tables
1 Bill of Materials ............................................................................................................. 9
1 Introduction
1.1 EVM Features
• Evaluation Module For the bq24750/50A/51/51A/51B/52/53
• High Efficiency NMOS-NMOS Synchronous Buck Charger With 300 kHz Frequency
• Battery/Adapter to System Power Selector Function
• User-Selectable 2-cell, 3-cell or 4-cell Li-ion Battery Voltage
• User-Programmable Battery Regulation Voltage with External Voltage Source (4.2/cell by Default)
• User-Programmable Charge Current with External Voltage Source (3 A by Default)
• User-Programmable Input Current Limit with External Voltage Source (4.5 A by Default)
• Pin Programmable Interface for Control and Status Communications with Host
• AC Adapter Operating Range 18 V to 22 V
• Adapter Overcurrent Protection
• ACFET Overpower Protection
• LED Indication for Control and Status Signals.
1
SLUU283D–May 2007–Revised March 2010 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous
Notebook Charger and System Power Selector
Submit Documentation Feedback Copyright © 2007–2010, Texas Instruments Incorporated

Introduction www.ti.com
• Test Points for Key Signals Available for Testing Purpose. Easy Probe Hook-up
• Jumpers Available, Easy to Change Connections
1.2 General Description
The bq24750/50A/51/51A/51B/52/53 evaluation module is a complete charger module for evaluating a
multi cell synchronous notebook charge and path selection solution using the
bq24750/50A/51/51A/51B/52/53 devices. It is designed to deliver up to 6A of charge current to Li-Ion or
Li-Pol applications. The charge current is programmable by external voltage input.
The bq24750/50A/51/51A/51B/52/53 has a highly integrated battery charge controller designed to work
with external host commands. The battery voltage, charge current, input current limit and other system
parameters are pin-programmable.
The dynamic power management (DPM) function modifies the charge current depending on system load
conditions, avoiding ac adapter overload.
High accuracy current sense amplifiers enable accurate measurement of the ac adapter current, allowing
monitoring of overall system power.
For details, see the bq24750 data sheet (SLUS735) , the bq24750A data sheet (SLUS834), the bq24751
data sheet (SLUS734), the bq24751A data sheet (SLUS756), the bq24751B data sheet (SLUS835) and
the bq24753 data sheet (SLUS885).
1.3 I/O Description
Jack Description
J1–ACPWR AC adapter, positive output
J1–PGND AC adapter, negative output
J2–VADJ VADJ pin (12)
J2–ACSET ACSET pin (6)
J2–SRSET SRSET pin (16)
J3–CHGEN CHGEN pin (1)
J3–CELLS CELLS pin (20)
J4–VEXT External power supply, positive output
J4–GND External power supply, negative output
J5–VREF IC reference voltage VREF
J5–VDAC VDAC pin (11)
J5–VDACEXT External VDAC voltage
J5–GND Ground
J6–TS TS pin (8) output for bq24750/50A/52, OVPSET pin (8) output for bq24751/51A/51B/53
J6–PGND Ground
J6–BAT Connected to battery pack
J6–SYS Connected to system
J7–ACGOOD ACGOOD pin (13)
J7–IOUTF R21 terminal connected to C23
J7–VREF IC reference voltage VREF
J7–DPMDET pin number 21, DPMDET for bq24750/50A/52, LEARN for bq24751/51A/51B/53
JP1–1 bq24751/51A/51B/53 OVPSET resistor divider for bq24751/51A/51B/53
JP1–2 Pin 8
JP1–3 bq24750/50A/52 TS resistor divider for bq24750/50A/52
JP2–1 Pin 21, LEARN for bq24751/51A/51B/53
LEARN DISA
JP2–2 Ground
JP3–1 ACDRV pin (4) output
ACDRV
JP3–2 LED drive
2bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous SLUU283D–May 2007–Revised March 2010
Notebook Charger and System Power Selector Submit Documentation Feedback
Copyright © 2007–2010, Texas Instruments Incorporated

www.ti.com Introduction
Jack Description
JP4–1 Pull-up voltage source
LEDPWR
JP4–2 LED Pull-up power line
JP5–VEXT External power supply
JP5–HI Pull-up voltage source
JP5–VREF IC reference voltage VREF
JP6–1 REGN pin (24)
4.2V REG
JP6–2 VADJ pin (12)
JP7–VREF IC reference voltage VREF
JP7–VDAC VDAC pin (11)
JP7–EXT External VDAC voltage
JP8–1 BATDRV pin (14) output
BATDRV
JP8–2 LED drive
JP9–1 Pull-up voltage source
CHGDISA
JP9–2 CHGEN pin (1)
JP10–HI Pull-up voltage source
JP10–CELLS CELLS pin (20) output
JP10–LO Ground
1.4 Control and Key Parameters Setting
Factory Setting
–001, –004, –002, –003,
Jack Description or –005 –006, or –007
(bq24750/50A/52) (bq24751/51A/51B/53)
Pin 8 connection
JP1 1-2 (751) : OVPSET Jumper on 2-3 Jumper on 1-2
2-3 (750) : TS
JP2 Disable LEARN mode when on Jumper Off Jumper On
JP3 JP3 The conduction of the AC MOSFET is indicated by LED when on Jumper On Jumper On
The pull-up power source supplies the LEDs when on. LED has no
JP4 Jumper On Jumper On
power source when off.
Pull-up power source setting Jumper on 1-2 Jumper on 1-2
JP5 1-2: Use VREF as the pull-up source (HI and VREF) (HI and VREF)
2-3: Use external power supply as the pull-up source
JP6 Connect REGN to VADJ when on Jumper On Jumper On
VDAC voltage source setting Jumper on 1-2 Jumper on 1-2
JP7 1-2 : Connect VREF to VDAC (VREF and VDAC) (VREF and VDAC)
2-3 : Connect external voltage source to VDAC
JP8 The conduction of the battery MOSFET is indicated by LED when on Jumper On Jumper On
JP9 Disable charge process when on Jumper On Jumper On
Number of cells selection
1-2 (HI-CELLS) : 4 cells
JP10 Jumper on 2-3 (3 cells) Jumper on 2-3 (3 cells)
2-3 (CELLS-LO) : 3 cells
Open: 2 cells
3
SLUU283D–May 2007–Revised March 2010 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous
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Test Summary www.ti.com
1.5 Recommended Operating Conditions
SYMBOL DESCRIPTION MIN TYP MAX UNIT
VIN Supply voltage Input voltage from ac adapter input 18 19 22 V
VBAT Battery voltage Voltage applied at VBAT terminal of J8 6 7–16.8 20 V
IAC Supply current Maximum input current from ac adapter 0 4.5 A
Ichrg Charge current Battery charge current 2 3 or 4 6 A
TJOperating junction temperature range 0 125 °C
2 Test Summary
2.1 Definitions
This procedure details how to configure the HPA207 evaluation board. On the test procedure the following
naming conventions are followed. See the HPA207 schematic for details.
VXXX : External voltage supply name (VADP, VBT, VSBT)
LOADW: External load name (LOADR, LOADI)
V(TPyyy): Voltage at HPA207 internal test point TPyyy. For example, V(TP12) means the voltage
at TP12.
V(Jxx): Voltage at HPA207 jack terminal Jxx.
V(TP(XXX)): Voltage at test point XXX. For example, V(ACDET) means the voltage at the test point
which is marked as ACDET.
V(XXX, YYY): Voltage across point XXX and YYY.
I(JXX(YYY)): Current going out from the YYY terminal of jack XX.
Jxx(BBB): Terminal or pin BBB of jack xx
Jxx ON : HPA207 internal jumper Jxx terminals are shorted
Jxx OFF: HPA207 internal jumper Jxx terminals are open
Jxx (-YY-) ON: HPA207 internal jumper Jxx adjacent terminals marked as YY are shorted
Measure:→A,B Check specified parameters A, B. If measured values are not within specified limits the
unit under test has failed.
Observe →A,B Observe if A, B occur. If they do not occur, the unit under test has failed.
Assembly drawings have location for jumpers, test points and individual components.
2.2 Equipment
2.2.1 POWER SUPPLIES
Power Supply 1 (PS1): a power supply capable of supplying 20V at 5A is required.
Power Supply 2 (PS2): a power supply capable of supplying 5V at 1A is required. (for HPA207-001, -004,
or -005 only)
2.2.2 LOAD 1
A 30V (or above), 5A (or above) electronic load that can operate at constant current mode
2.2.3 LOAD 2
A Kepco bipolar operational power supply/amplifier, 0 ± 20V (or above), 0 ± 6A (or above).
Or: A 20-V at 6-A (or above) dc power supply in parallel with a 3Ω, 100W+ power resistor which is
thermally capable or well cooled for at least 100W power dissipation.
4bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous SLUU283D–May 2007–Revised March 2010
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Copyright © 2007–2010, Texas Instruments Incorporated

BQ24750 EVM
ACPWR
J1
PGND
SYS
J6
GND
BAT
VREF
JP3
TS
DPMDET
ACGOOD
APPLICATION CIRCUIT
PH
BAT
SYS
VIN
IADPTF
J3
J5
J2
J4
JP9
JP1
U1
JP2
JP8
JP6 JP4
JP10 JP5 JP7
J7
V
Iin
I
Power
supply #1
V
V
Power
supply #2
BQ24750 EVM
ACPWR
J1
PGND
SYS
J6
GND
BAT
VREF
JP3
TS
DPMDET
ACGOOD
APPLICATION CIRCUIT
PH
BAT
SYS
VIN
IADPTF
J3
J5
J2
J4
JP9
JP1
U1
JP2
JP8
JP6 JP4
JP10 JP5 JP7
J7
BQ24750 EVM
ACPWR
J1
PGND
SYS
J6
GND
BAT
VREF
JP3
TS
DPMDET
ACGOOD
APPLICATION CIRCUIT
PH
BAT
SYS
VIN
IADPTF
J3
J5
J2
J4
JP9
JP1
U1
JP2
JP8
JP6 JP4
JP10 JP5 JP7
J7
V
Iin
I
Power
supply #1 V
Iin
I
Power
supply #1
V
V
Power
supply #2
V
V
Power
supply #2
www.ti.com Test Summary
2.2.4 METERS
Seven Fluke 75 multimeters, (equivalent or better)
Or: Four equivalent voltage meters and three equivalent current meters.
The current meters must be capable of measuring 5A+ current.
2.2.5 OSCILLOSCOPES
An oscilloscope, a single voltage probe and a single current probe are required.
2.3 Equipment Setup
(A) Set the power supply 1 for 0V ± 100mVDC, 5.0 ± 0.1A current limit and then turn off supply.
(B) Connect the output of power supply 1 in series with a current meter (multimeter) to J1 (POS, GND).
(C) Connect a voltage meter across J1 (POS, GND).
(D) Set the power supply 2 for 1.6V ± 100mVDC, 1.0 ± 0.1A current limit and then disable the output.
(E) (For HPA207-001, -004 or -005 only) Connect the output of power supply 2 to J6 (TS, GND).
(F) Turn off Load 1.
(G) Set the voltage of Load 2 to 2V ± 1V. Turn off Load 2.
(H) Connect a voltage meter across J6 (BAT, GND).
(I) Connect a voltage meter across J6 (SYS, GND).
(J) JP3: ON, JP8: ON, JP9: ON, JP6: ON, JP4: ON, JP10 (LO, CELLS): ON, JP5 (HI, VREF): ON, JP7
(VREF, VDAC): ON.
(K) (For HPA207-001, -004 or -005 only) JP1(-750-): ON, JP2: OFF
(L) (For HPA207-002, -003, -006, or -007 only) JP1 (-751-): ON, JP2: ON
After the steps above, the test setup for HPA207-001, -004, or -005 (bq24750/50A/52 EVM) is shown in
Figure 1. The test setup for HPA207-002, -003, -006, or -007 (bq24751/51A/51B/53 EVM) is shown in
Figure 2.
Figure 1. Original Test Setup for HPA207-001, -004, or -005
5
SLUU283D–May 2007–Revised March 2010 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous
Notebook Charger and System Power Selector
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BQ24751 EVM
ACPWR
J1
PGND
SYS
J6
GND
BAT
VREF
JP3
TS
DPMDET
ACGOOD
APPLICATION CIRCUIT
PH
BAT
SYS
VIN
IADPTF
J3
J5
J2
J4
JP9
JP1
U1
JP2
JP8
JP6 JP4
JP10 JP5 JP7
J7
V
V
V
Iin
I
Power
supply #1
BQ24751 EVM
ACPWR
J1
PGND
SYS
J6
GND
BAT
VREF
JP3
TS
DPMDET
ACGOOD
APPLICATION CIRCUIT
PH
BAT
SYS
VIN
IADPTF
J3
J5
J2
J4
JP9
JP1
U1
JP2
JP8
JP6 JP4
JP10 JP5 JP7
J7
BQ24751 EVM
ACPWR
J1
PGND
SYS
J6
GND
BAT
VREF
JP3
TS
DPMDET
ACGOOD
APPLICATION CIRCUIT
PH
BAT
SYS
VIN
IADPTF
J3
J5
J2
J4
JP9
JP1
U1
JP2
JP8
JP6 JP4
JP10 JP5 JP7
J7
V
V
V
V
V
Iin
I
Power
supply #1 V
Iin
I
Power
supply #1
Test Summary www.ti.com
Figure 2. Original Test Setup for HPA207-002, -003, -006, or -007
2.4 Procedure
2.4.1 AC ADAPTER DETECTION THRESHOLD
1. Make sure EQUIPMENT SETUP steps are followed.
2. (For HPA207-001, -004, or -005 only) Turn on PS2.
3. Turn on PS1.
Measure →V(J6(VSYS)) = 0 ± 500mV
Measure →V(TP(VREF)) = 0V ± 500mV
Measure →V(TP(REGN)) = 0V ± 500mV
4. Increase the output voltage of PS1 until D7 (ACGOOD) on but do not exceed 19V.
Measure →V(TP(ACDET)) = 2.4V ± 150mV
Measure →V(J1(POS)) = 17.8V ± 1V
Measure →V(J6(SYS)) = 17.8V ± 1V
Measure →V(TP(VREF)) = 3.3V ± 200mV
Measure →V(TP(REGN)) = 6V ± 500V (For HPA207-001, -002, or -004)
Measure →V(TP(REGN)) = 0.7V ± 700mV (For HPA207-003, -005, -006, -007 only)
Measure →D4 (ACDRV) on. (Note: ignore D5 if testing HPA207-002, -003, -006, or -007)
2.4.2 SELECTION OF REGULATION VOLTAGE
1. Increase the voltage of PS1 until V(J5(POS)) = 19V± 0.1V.
Measure →V(J6(BAT, GND)) = 0V ± 1V
Uninstall JP9 (enable the charging)
Observe →D3 (CHG EN) on
Measure →V(J6(BAT)) = 12.6V ± 200mV
2. Install JP10 (CELLS, HI)
Measure →V(J6(BAT)) = 16.8V ± 200mV
3. Install JP10 (CELLS, LO)
Measure →V(J6(BAT)) = 12.6V ± 200mV
6bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous SLUU283D–May 2007–Revised March 2010
Notebook Charger and System Power Selector Submit Documentation Feedback
Copyright © 2007–2010, Texas Instruments Incorporated

BQ24751 EVM
ACPWR
J1
PGND
SYS
J6
GND
BAT
VREF
JP3
TS
DPMDET
ACGOOD
APPLICATION CIRCUIT
PH
BAT
SYS
VIN
IADPTF
J3
J5
J2
J4
JP9
JP1
U1
JP2
JP8
JP6 JP4
JP10 JP5 JP7
J7
V
Iin
I
Power
supply #1
Ibat
V
Isys
V
ILoad
#1
Load
#2
I
BQ24751 EVM
ACPWR
J1
PGND
SYS
J6
GND
BAT
VREF
JP3
TS
DPMDET
ACGOOD
APPLICATION CIRCUIT
PH
BAT
SYS
VIN
IADPTF
J3
J5
J2
J4
JP9
JP1
U1
JP2
JP8
JP6 JP4
JP10 JP5 JP7
J7
V
Iin
I
Power
supply #1 V
Iin
I
Power
supply #1
Ibat
V
Isys
V
ILoad
#1
Load
#2
I
www.ti.com Test Summary
2.4.3 CHARGE CURRENT AND AC CURRENT REGULATION (DPM)
1. Install JP9 (Disable the charging).
2. Connect the Load 2 in series with a current meter (multimeter) to J6 (BAT, GND). Make sure a voltage
meter is connected across J6 (BAT, GND). Turn on the Load 2. Set the output voltage to 10.5V.
3. Connect the output of the Load 1 in series with a current meter (multimeter) to J6 (SYS, GND). Make
sure a voltage meter is connected across J6 (SYS, GND). Turn on the power of the Load 1. Set the
load current to 4A ± 50mA but disable the output. The setup is now like Figure 3 for HPA207-001, -004
or -005 and like Figure 4 for HPA207-002, -003, -006, or -007. Make sure Ibat = 0A ± 10mA and Isys =
0A ± 10mA.
Figure 3. Test Setup for HPA207-001, -004, or -005
Figure 4. Test Setup for HPA207-002, -003, -006, or -007
4. Uninstall JP9 (Enable the charging).
Observe →D3 (CHG EN) on
5. Measure →Ibat = 3000mA ± 200mA
Measure →V(TP(IOUT)):= 300mV ± 100mV (For HPA207-001, 002, -003, -005, -006, or -007)
Measure →V(TP(IOUT)):= 600mV ± 100mV (For HPA207-004 only)
6. Enable the output of the Load 1.
Observe →D5 (DPMDET) on (For HPA207-001, -004, or -005 only)
Measure →Isys = 4000mA ± 200mA, Ibat = 1000mA ± 500mA, Iin = 4500mA ± 400mA
7. Turn off the Load 1.
Measure →Isys = 0 ± 100mA, Ibat = 3000mA ± 200mA
7
SLUU283D–May 2007–Revised March 2010 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous
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PCB Layout Guideline www.ti.com
2.4.4 CHARGER CUT-OFF BY THERMISTOR (HPA207-001, -004, or -005 ONLY)
1. Slowly increase the output voltage of PS2 until Ibat = 0 ± 10mA.
Measure →V(J6(TS)) = 2.44V ± 400mV
2. Slowly decrease the output voltage of PS2.
Charge will resume. Continue to decrease the output voltage of PS2 slowly until Ibat = 0 ± 10mA.
Measure →V(J6(TS)) = 0.97V ± 400mV
3. Slowly increase the output voltage of PS2 to 1.6V ± 100mV.
Measure →Ibat = 3000mA ± 200mA
2.4.5 LEARN MODE (HPA207-002, -003, -006, or -007 ONLY)
1. Measure →V(J6(SYS)) = 19V ± 1V (adapter connected to system)
2. Uninstall JP2 (Enable the learn mode).
Measure →V(J6(SYS)) = 10.5V ± 1V (battery connected to system)
3. Install JP2 (Disable the learn mode).
Measure →V(J6(SYS)) = 19V ± 1V (adapter connected to system)
2.4.6 POWER PATH SELECTION
1. Install JP9 (Disable the charging).
Measure →V(J6(SYS)) = 19V ± 1V (adapter connected to system)
Observe →D4 (ACDRV) on, D6 (BATDRV) off.
2. Turn off PS1.
Measure →V(J6(SYS)) = 10.5V ± 1V (battery connected to system)
3 PCB Layout Guideline
1. It is critical that the exposed power pad on the backside of the bq2475x package be soldered to the
PCB ground. Make sure there are sufficient thermal vias right underneath the IC, connecting to the
ground plane on the other layers.
2. The control stage and the power stage should be routed separately. At each layer, the signal ground
and the power ground are connected only at the power pad.
3. AC current sense resistor must be connected to ACP (pin 3) and ACN (pin 2) with a Kelvin contact.
The area of this loop must be minimized. The decoupling capacitors for these pins should be placed as
close to the IC as possible.
4. Charge current sense resistor must be connected to SRP (pin 19), SRN (pin 18) with a Kelvin contact.
The area of this loop must be minimized. The decoupling capacitors for these pins should be placed as
close to the IC as possible.
5. Decoupling capacitors for PVCC (pin 28), VREF (pin 10), REGN (pin 24) should be placed underneath
the IC (on the bottom layer) and make the interconnections to the IC as short as possible.
6. Decoupling capacitors for BAT (pin 17), IADAPT or IBAT (pin 15) must be placed close to the
corresponding IC pins and make the interconnections to the IC as short as possible.
7. Decoupling capacitor(s) for the charger input must be placed close to Q3 drain and Q4 source.
8bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous SLUU283D–May 2007–Revised March 2010
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Copyright © 2007–2010, Texas Instruments Incorporated

www.ti.com Bill of Materials, Board Layout and Schematics
4 Bill of Materials, Board Layout and Schematics
Table 1. Bill of Materials
'50 '51 '51A '52 '50A '51B '53 Part
RefDes Value Description Size MFR
-001 -002 -003 -004 -005 -006 -007 Number
0 0 0 0 0 0 0 C1 Open Capacitor, 0.207 X UUD1E220 Nichicon
Electrolytic, 22uF, 0.209 inch MCR1GS
25 VDC
0 0 0 0 0 0 0 C10, C21, Open Capacitor, 603 C1608X7R1 TDK
C25,C29, Ceramic, 50V, H104K
C32 X7R, 10%
1 1 1 1 1 1 1 C11 0.47uF Capacitor, 805 GRM21BR7 muRata
Ceramic, 50V, 1H474KA88
X7R, 10% L
4 4 4 4 4 4 4 C12, C13, 10uF Capacitor, 1210 Std Taiyo Yuden
C23, C26 Ceramic, 25V,
X5R, 10%
0 0 0 0 0 0 0 C14 Open Capacitor, 805
Ceramic, vvV
1 1 1 1 1 1 1 C15 4.7uF Capacitor, 1206 C3216X7R1 TDK
Ceramic, 25V, E475M
X7R, 20%
1 1 1 1 1 1 1 C16 100pF Capacitor, 603 C1608C0G1 TDK
Ceramic, 50V, H101J
C0G, 5%
0 0 0 0 0 0 0 C2 Open Capacitor, 1210 Std Taiyo Yuden
Ceramic, 25V,
X5R, 10%
0 0 0 0 0 0 0 C22, C33 Open Capacitor, 1206 GRM31CR6 muRata
Ceramic, 25V, 1E106KA12
X5R, 10% L
2 2 2 2 2 2 2 C24, C30 10uF Capacitor, 1206 GRM31CR6 muRata
Ceramic, 25V, 1E106KA12
X5R, 10% L
0 0 0 0 0 0 0 C3 Open Capacitor, 1206 C3216X7R1 Taiyo Yuden
Ceramic, 35V, H105K
X7R, 10%
2 2 2 2 2 2 2 C4, C31 0.01uF Capacitor, 603 C1608X7R1 TDK
Ceramic, 50V, H104K
X7R, 10%
1 1 1 1 1 1 1 C5 22 uF Capacitor, 0.207 X UUD1E220 Nichicon
Electrolytic, 22uF, 0.209 inch MCR1GS
25 VDC
0 0 0 0 0 0 0 C6 Open Capacitor, 1210 Std Vishay
Ceramic, vvV,
[temp], [tol]
7 7 7 7 7 7 7 C7, C9, 0.1uF Capacitor, 603 C1608X7R1 TDK
C18, Ceramic, 50V, H104K
C20,C27, X7R, 10%
C28, C34
3 3 3 3 3 3 3 C8, C17, 1.0uF Capacitor, 1206 C3216X7R1 TDK
C19 Ceramic, 50V, H105K
X7R, 10%
1 1 1 1 1 1 1 D1 BAT54 Diode, Schottky, SOT23 BAT54 Vishay-
200mA, 30V Liteon
1 1 1 1 1 1 1 D2 MBRS1 Diode, Schottky, SMB MBRS130T IR
30 1A, 30V R
4 4 4 4 4 4 4 D3, D4, D6, Green Diode, LED, Green, 603 LTST- Lite On
D7 2.1V, 20mA, 6mcd C190GKT
1 1 1 1 1 1 1 D5 Red Diode, LED, Red, 603 LTST- Lite On
1.8V, 20mA, C190CKT
20mcd
1 1 1 1 1 1 1 J1 ED160 Terminal Block, 2 0.40 x 0.35 ED1609 OST
9-ND pin, 15A, 5.1mm inch
1 1 1 1 1 1 1 J2 ED151 Terminal Block, 3 0.41 x 0.25 ED1515 OST
5 pin, 6A, 3.5mm inch
9
SLUU283D–May 2007–Revised March 2010 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous
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Table 1. Bill of Materials (continued)
'50 '51 '51A '52 '50A '51B '53 Part
RefDes Value Description Size MFR
-001 -002 -003 -004 -005 -006 -007 Number
2 2 2 2 2 2 2 J3, J4 ED151 Terminal Block, 2 0.27 x 0.25 ED1514 OST
4 pin, 6A, 3.5mm inch
1 1 1 1 1 1 1 J6 ED222 Terminal Block, 4 0.80 x 0.35 ED2227 OST
7 pin, 15A, 5.1mm inch
2 2 2 2 2 2 2 J5, J7 ED151 Terminal Block, 4 0.55 x 0.25 ED1516 OST
6 pin, 6A, 3.5mm inch
4 4 4 4 4 4 4 JP1, JP5, PTC36 Header, 3 pin, 0.100 inch x PTC36SAA Sullins
JP7, JP10 SAAN 100mil spacing, 3 N
(36-pin strip)
6 6 6 6 6 6 6 JP2, JP3, PTC36 Header, 2 pin, 0.100 inch x PTC36SAA Sullins
JP4, JP6, SAAN 100mil spacing, 2 N
JP8, JP9 (36-pin strip)
1 1 1 1 1 1 1 L1 8.2uH Inductor, SMT, 0.51 x 0.51 IHLP5050C Vishay
16A, 24.8milliohm inch E8R2M01
3 3 3 3 3 3 3 Q1, Q2, Q5 Si4435 MOSFET, P-ch, SO8 Si4435DY Siliconix
DY 30V, 8.0A,
20milliohm
2 2 2 2 2 2 2 Q3, Q4 FDS66 Transistor, SO8 FDS6680A Fairchild
80A MOSFET, NChan,
30V, 12.5A, Rds
9.5 milliohm
8 8 8 8 8 8 8 Q6, Q8, Q9, 2N7002 MOSFET, N-ch, SOT23 2N7002DIC Vishay-
Q10, Q11, DICT 60V, 115mA, T Liteon
Q13, Q14, 1.2Ohms
Q15
2 2 2 2 2 2 2 Q7, Q12 TP0610 MOSFET, P-Ch, SOT-23 TP0610K Vishay-
K 60V, Rds 6 ohms, Siliconix
Id 185 mA
1 1 1 1 1 1 1 R1 422k Resistor, Chip, 603 Std Std
1/10W, 1%
2 2 2 2 2 2 2 R10, R11 0 Resistor, Chip, 402 Std Std
1/16W, 5%
3 3 3 3 3 3 3 R12, R14, 100k Resistor, Chip, 805 ERA- Panasonic
R18 1/10W, 0.1% 6YEB104V
1 1 1 1 1 1 1 R13 82k Resistor, Chip, 805 ERA- Panasonic
1/10W, 0.1% 6YEB823V
1 1 1 1 1 1 1 R15 43k Resistor, Chip, 805 ERA- Panasonic
1/10W, 0.1% 6YEB433V
1 1 1 1 1 1 1 R19 68k Resistor, Chip, 805 ERA- Panasonic
1/10W, 0.1% 6YEB683V
1 1 1 1 1 1 1 R2 71.5k Resistor, Chip, 603 Std Std
1/10W, 1%
3 3 3 3 3 3 3 R21, R26, 20.0k Resistor, Chip, 603 Std Std
R33 1/16W, 1%
5 5 5 5 5 5 5 R24, R25, 2.21k Resistor, Chip, 603 Std Std
R27, R30, 1/16W, 1%
R34
1 1 1 1 1 1 1 R3 390k Resistor, Chip, 603 Std Std
1/16W, 1%
1 1 1 1 1 1 1 R31 10.0k Resistor, Chip, 603 Std Std
1/16W, 1%
1 1 1 1 1 1 1 R4 60.4k Resistor, Chip, 603 Std Std
1/16W, 1%
1 1 1 1 1 1 1 R5 5.62k Resistor, Chip, 402 Std Std
1/16W, 1%
1 1 1 1 1 1 1 R6 118k Resistor, Chip, 402 Std Std
1/16W, 1%
6 6 6 6 6 6 6 R7, R20, 100k Resistor, Chip, 603 Std Std
R22, R23, 1/16W, 1%
R28, R29
3 3 3 3 3 3 3 R8, R16, 10.0k Resistor, Chip, 402 Std Std
R32 1/16W, 1%
10 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous SLUU283D–May 2007–Revised March 2010
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Table 1. Bill of Materials (continued)
'50 '51 '51A '52 '50A '51B '53 Part
RefDes Value Description Size MFR
-001 -002 -003 -004 -005 -006 -007 Number
2 2 2 2 2 2 2 R9, R17 0.01 Resistor, Chip, 2010 WSL2010R0 Dale
1/2W, 1% 100FEA
10 10 10 10 10 10 10 SJ1, SJ2, 929950 Shorting jumpers, 929950-00 3M/ESD
SJ3, SJ4, -00 2-pin, 100mil
SJ5, SJ6, spacing,
SJ7, SJ8,
SJ9, SJ10
4 4 4 4 4 4 4 6-32 NYL nuts
4 4 4 4 4 4 4 ST1, ST2, 4816 STANDOFF M/F sf_thvt_325_ Keystone 4816
ST3, ST4 HEX 6-32 NYL rnd
.500"
2 2 2 2 2 2 2 TP1, TP20 5001 Test Point, Black, 0.100 x 5001 Keystone
Thru Hole Color 0.100 inch
Keyed
14 14 14 14 14 14 14 TP18,TP19, 5002 Test Point, White, 0.100 x 5002 Keystone
TP21,TP22, Thru Hole Color 0.100 inch
TP23,TP24, Keyed
TP25,TP26,
TP27,TP28,
TP29,TP30,
TP31,TP32
4 4 4 4 4 4 4 TP2,TP15,T 131- Adaptor, 3.5-mm 0.200 inch 131-4244-00 Tektronix
P16,TP17 4244- probe clip ( or
00 131-5031-00)
0 0 0 0 0 0 0 TP3,TP4,TP STD Test Point, 0.020 STD STD
5,TP6,TP7,T Hole
P8,TP9,TP1
0,TP11,TP1
2,TP13,TP1
4
1 0 0 0 0 0 0 U1 BQ247 IC, Battery Charge QFN-28 BQ24750RH TI
50RHD Controller D
0 1 0 0 0 0 0 U1 BQ247 IC, Battery Charge QFN-28 BQ24751RH TI
51RHD Controller D
0 0 1 0 0 0 0 U1 BQ247 IC, Battery Charge QFN-28 BQ24751AR TI
51ARH Controller HD
D
0 0 0 1 0 0 0 U1 BQ247 IC, Battery Charge QFN-28 BQ24752RH TI
52RHD Controller D
0 0 0 0 1 0 0 U1 BQ247 IC, Battery Charge QFN-28 BQ24750AR TI
50ARH Controller HD
D
0 0 0 0 0 1 0 U1 BQ247 IC, Battery Charge QFN-28 BQ24751BR TI
51BRH Controller HD
D
0 0 0 0 0 0 1 U1 BQ247 IC, Battery Charge QFN-28 BQ24753RH TI
53RHD Controller D
1 1 1 1 1 1 1 HPA20 Printed Circuit Any
7 board
11
SLUU283D–May 2007–Revised March 2010 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous
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4.1 Board Layout
Figure 5. Top Layer
12 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous SLUU283D–May 2007–Revised March 2010
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Figure 6. 2nd Layer
13
SLUU283D–May 2007–Revised March 2010 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous
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Figure 7. 3rd Layer
14 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous SLUU283D–May 2007–Revised March 2010
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Figure 8. Bottom Layer
15
SLUU283D–May 2007–Revised March 2010 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous
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Figure 9. Top Assembly
16 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous SLUU283D–May 2007–Revised March 2010
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Figure 10. Bottom Assembly
17
SLUU283D–May 2007–Revised March 2010 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous
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Figure 11. Top Silk
4.2 Schematics
The schematic is shown on the following page.
18 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous SLUU283D–May 2007–Revised March 2010
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+
+
www.ti.com Bill of Materials, Board Layout and Schematics
19
SLUU283D–May 2007–Revised March 2010 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous
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20 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous SLUU283D–May 2007–Revised March 2010
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Copyright © 2007–2010, Texas Instruments Incorporated