Texas Instruments bq25505, Руководство пользователя

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Introduction
1.5 EVM I/O Connections
Table 1. I/O Connections and Configuration for Evaluation of bq25505 EVM
REFERENCE DESCRIPTION COMMENTS / DEFAULT SETTINGS
DESIGNATOR
HEADERS AND TERMINALS
J1 – VIN Input source (+) If VIN_DC is higher than VSTOR and VSTOR is equal to VBAT_OV, the input VIN_DC is pulled to ground
through a small resistance to stop further charging of the attached battery or capacitor. It is critical that if
J2 – VIN/GND Input source terminal block
this case is expected, the impedance of the source attached to VIN_DC be higher than 20 Ω and not a low
J3 – GND Input source return (–)
impedance source.
J4 – VSTOR Boost charger output (+)
J5 – VSTOR/GND Boost charger output terminal block
J6 – GND Boost charger return (–)
J7– BAT_SEC Rechargeable storage element connection (+)
J8 – BAT_SEC/GND Rechargeable storage element terminal block
J9 – GND Rechargeable storage element connection return (–)
J10 – VBAT_PRI Non-rechargeable storage element connection (+) VBAT_PRI is an optional non-rechargeable battery that switches in to the power the system when
BAT_SEC drops below the VBAT_OK threshold.
J11 – Non-rechargeable storage element connection terminal
VBAT_PRI/GND block
J12 – GND Non-rechargeable storage element connection return (–)
J13 – BAT_OK/GND Battery Status Indicator (+/–)
J14 – VOR Output of multiplexing switches, either VSTOR or
VBAT_PRI (+)
J15 – VOR/GND Output of multiplexing switches terminal block
J16 – GND Return for output of multiplexing switches (–)
TEST POINTS
TP1 Input source, VIN_DC (+)
TP2 Boost charger switching node
TP3 Buck converter switching node
TP4 Boost charger output, VSTOR (+)
TP5 Rechargeable storage element, VBAT_SEC (+)
TP6 Non-rechargeable storage element, VB)
TP7 VRDIV node CAUTION: Providing an additional low impedance current path in parallel with the feedback resistors , for
example, with a 10-M
Ω scope probe attached, will degrade regulation accuracy.
TP8 Output return (–)
TP9 Input return (–)
WHITE
5 SLUUAA8 – September 2013 User's Guide for bq25505 Battery Charger Evaluation Module for Energy
Harvesting
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