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參數資料
| 型號： | PMP5818UWSR |
| 廠商： | ERICSSON POWER MODULES AB |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 88 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT PACKAGE-11 |
| 文件頁數： | 41/60頁 |
| 文件大小： | 4072K |
| 代理商： | PMP5818UWSR |
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Ericsson Internal
PRODUCT SPECIFICATION
5 (13)
Prepared (also subject responsible if other)
No.
EYIPYAN
3/1301-BMR657 5818 Uen
Approved
Checked
Date
Rev
Reference
SEC/D (Julia You)
EQUENXU
2007-7-9
B
to draw current from the input source.
The UVLO feature of the PMP 5818UW P module allows for
limited adjustment of the ON threshold voltage. The
adjustment is made via the Inhibit/UVLO Prog control pin
(Pin 11) using a single resistor (see figure below). When pin
11 is left open, the ON threshold voltage is intermally set to
its default value, which is 4.3 volts. The ON threshold might
need to be raised if the module is powered from a tightly
regulated 12 V bus. Adjusting the threshold voltage
prevents the module from operating if the input bus fails to
completely rise to its specified regulation voltage.
The below equation determines the value of RUVLO required
to adjust VTHD to a new value. The default value is 4.3 V and
it may only be adjusted to a higher value.
)
(
585
137
)
137
(
9690
Ω
×
=
k
V
R
THD
UVLO
The above table lists the standard resistor values for RUVLO
for different values of the ON threshold (VTHD) voltage.
The figure of UVLO Program Resistor Placement is as follow.
PM P 5 8 1 8 U W
P
PM P 5 8 1 8 U W
P
Turbo TransTM Technology
Turbo TransTM optimizes the transient response of the
regulator with added external capacitance using a single
external resistor. The benefits of this technology include:
reduced output capacitance, minimized output voltage
deviation following a load transient, and enhanced stability
when using ultra-low ESR output capacitors. The amout of
output capacitance required to meet a target output
voltage deviation, is reduded with Turbo TransTM activated.
Likewise, for a given amout of output capacitance, with
Turbo Trans engaged, the amplitude of the voltage
deviation following a load transient is reduced. Applications
requiring tight transient voltage tolerances and minimized
capacitor footprint area benefit from this technology.
Utilizing Turbo TransTM requires connecting a resistor, RTT ,
between the +Sense pin (pin 6) and the Turbo Trans pin
(pin 9), The value of the resistor directly corresponds to the
amount of output capacitance required. For the PMP
5818UW P, the minimum required capacitance is 2200 F.
When using Turbo TransTM, capacitors with a
capacitance×ESR product below 10,000 F×m are
required.
To see the benefit of Turbo TransTM, follow the 5mV/A
marking across to the “Without Turbo TransTM” plot.
Following that point down shows that more than 4,500 F
of output capacitance is required to meet the same
transient deviation limit. This is the benefit of Turbo TransTM.
A typical Turbo TransTM application schematic is also shown.
E
PMP 5000 series
PoL Regulator
Input 4.5 - 14 V, Output up to 16 A / 88 W
EN/LZT 146 388 R1B December 2009
Ericsson AB
Technical Specication
46
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