Modifications
3
Modifications
See the bq51221 data sheet (
) when changing components. To aid in such customization of the
EVM, the board was designed with devices having 0402 and 0603 or larger footprints. A real
implementation likely occupies less total board space.
Note that changing components can improve or degrade EVM performance.
4
Recommended Operation Condition
provides a summary of the bq51221EVM-520 performance specifications. All specifications are
given for an ambient temperature of 25°C.
Table 1. bq51221EVM-520 Electrical Performance Specifications
Parameter
Test Condition
MIN
TYP
MAX
Unit
Vrect
Rect voltage range
4
10
V
I
AD_EN_sink
Sink current
1
mA
I
IN
Input current range
1.5
A
I
OUT
Output current range
Current limit programming range
1.5
A
V
OUT(REG)
Programmable Output Voltage
(1)
POUT = 5 W
4.5
8
V
F
s
Switching Frequency
WPC
110
205
kHz
PMA
235
275
T
J
Junction Temperature
125
°C
(1)
The output voltage can be adjusted using I2C or the VIREG and VOREG resistors. Also the coil needs to be changed for
different voltage for optimal operation of the EVM.
4
Dual Mode (WPC and PMA) Integrated Wireless Receiver Power Supply
SLUUAX6B – February 2014 – Revised June 2014
Copyright © 2014, Texas Instruments Incorporated