Datasheet

Performance Specification Summary
www.ti.com
2 Performance Specification Summary
See Data Sheet Recommended Operating Conditions for component adjustments. For details about the
resistor programmable settings, see bq25504 data sheet (SLUSAH0).
MIN NOM MAX UNIT
V
IN
(DC) DC input voltage into VIN_DC 0.13 3.0 V
V
IN_Start-up
(DC) DC minimum Start-up Voltage 330 mV
V
OV
Over Voltage Sets maximum output voltage 2.9 3.1 3.3 V
V
UV
Under voltage setting for shorting VSTOR to VBAT 2.1 2.2 2.3 V
VBAT_OK indication toggles high when VSTOR ramps up 2.65 2.8 2.95 V
V
BAT_OK
VBAT_OK indication toggles low when VSTOR ramps down 2.25 2.4 2.55 V
MPPT Maximum Power Point Tracking, Programmed % of Open Circuit Voltage 78%
C
BAT
Battery Pin Capacitance or equivalent battery capacity 100 µF
3 Test Summary
3.1 Equipment
Power Supplies
Power Supply #1 (PS#1): Adjustable 5V Power supply with Current Limit of 100mA.
Power Supply #2 (PS#2): Adjustable 5V Power supply with 20Ω series impedance (can just be a discrete
resistor) with Current Limit of 100mA.
Loads
Load #1: 10kΩ, 5%, 0.25W resistor and 1kΩ, 5%, 0.25W resistor as per procedure P/S#2 series
resistance: 20Ω, 5%, 0.25W
Meters
Meter#1,2,3: Fluke 75 multi-meter, (equivalent or better) for voltage measurements
Scope
Standard scope with at least two channels
3.2 Equipment and EVM Setup
Table 1. I/O Connections and Configuration for Evaluation of bq25504 EVM
Jack Description Factory Setting
J1VIN Input Source (+)
J1GND Input Source Return ()
J2BAT Battery connection (+)
J2GND Battery Connection Return ()
J3 VIN Input Source Sense (+) [for J1]
J3 -GND Input Source Return Sense () [for J1]
J4 BAT_OK Battery Status Indicator (+)
J4 - GND Battery Status Indicator Return ()
J5 STOR Charger Output (+)
J5 GND Charger Output Return ()
J6 STOR Charger Output Sense (+)
J6 BAT Battery Connection Sense (+) [for J2]
J6 - GND Battery Connection Sense () [for J2]
JP1 MPPT setting: Enabled-Divider; Disabled-STOR Place Shunt on JP1-2/3 (Divider)
JP2 OCS Setting: C5 Capacitor-No Shunt; Disabled-Shunt on REF-GND No Shunt
(JP1 should be Disabled)
4
bq25504 EVM Ultra Low Power Boost Converter with Battery Management for SLUU654AOctober 2011Revised October 2011
Energy Harvester Applications
Submit Documentation Feedback
Copyright © 2011, Texas Instruments Incorporated