Texas Instruments bq24750, User Manual

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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
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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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