ACCO Brands M01042-V Manual Do Utilizador
Product Engineering Specification
Document
PES-K33440 Rev
0.8
March 27, 2008
Confidential
Page 10 of 19
• The CLA power supply for the USB shall meet the following technical requirements:
a. Input
Surge
1. While the circuit is operating at MAX load and Min load the line
voltage is switched to the surge voltage
a. 12Vdc to 40Vdc for 16msec, back to 12Vdc. Repeated 5
times at 50% duty cycle
2. There shall be no component damage, Voltage / logic signals
shall remain within specified limits, No loss of performance and
no permanent damage.
no permanent damage.
b. Identity line Signals (USB)
1. With no load on the circuit measure the voltages on D+ and D-
2. The voltage must fall within the below limits
2. The voltage must fall within the below limits
a. D+ : 1.91V to 2.12V
b. D-: 1.91V to 2.12V
b. D-: 1.91V to 2.12V
c. Load / Line / Regulation
1. While the load on one output is increased in steps to a
predetermined table, the output voltage deviations are noted.
Test is repeated for different input voltages
Test is repeated for different input voltages
2. Output Voltage range
a. Vmin=4.85v
b. Vnom=5.0v
c. Vmax=5.25v
b. Vnom=5.0v
c. Vmax=5.25v
Regulation (V)
Input Voltage
(Vdc)
0.0A 0.25A 0.50A 0.70A 1.0A
10V
Na
Na
12V
Na
Na
14V
Na
Na
d. Dynamic Line Response
1. The PSU is subject to a +2Vdc line variation. The output loads
are chosen to give the worst case condition. No load capacitors
shall be used.
shall be used.
2. The PSU should not undershoot or overshoot beyond the
regulation limits (4.85Vmin, 5.25 Vmax)
e. Turn
off/on
Characteristics
1. All timing are to measured with a 5uF capacitive loading and 12V
DC input voltage.
a. Turn-on
delay
after DC input applied: T1<4.0 sec at
which point the output voltage must have stabilized
between 4.85 and 5.25 V DC.
between 4.85 and 5.25 V DC.
b. Output rise time (10% to 90% regulation): T2 <20ms
2. All
parameters
must
be within specification
a. The output voltage overshoot upon the application or
removal of the input voltage shall be less than 10%
above the nominal voltage.
above the nominal voltage.
b. There must be a smooth and continuous ramp of the DC
output voltage from 10% to 90% of its final set point
within the regulation band, while loaded as specified in
within the regulation band, while loaded as specified in