參數(shù)資料
型號(hào)： MPT612FBD48
廠商： NXP SEMICONDUCTORS
元件分類： 模擬信號(hào)調(diào)理
英文描述： Maximum power point tracking IC
中文描述： SPECIALTY ANALOG CIRCUIT, PQFP48
封裝： 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT313-2, LQFP-48
文件頁(yè)數(shù)： 24/37頁(yè)
文件大?。?/td> 607K
代理商： MPT612FBD48
NXP Semiconductors
MPT612
Maximum power point tracking IC
MPT612
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 — 14 September 2010
24 of 24
10. Dynamic characteristics
Table 6.
T
amb
= 0
°
C to 70
°
C for commercial applications, -40
°
C to +85
°
°C for industrial applications, V
DDC
, V
DD(IO)
over ranges
[1]
Symbol
Parameter
Conditions
External clock
Dynamic characteristics
Min
Typ
[1][2]
Max
Unit
f
osc
oscillator frequency
10
-
25
MHz
T
cy(clk)
clock cycle time
40
-
100
ns
t
CHCX
clock HIGH time
T
cy(clk)
× 0.4
-
-
ns
t
CLCX
clock LOW time
T
cy(clk)
× 0.4
-
-
ns
t
CLCH
clock rise time
-
-
5
ns
t
CHCL
clock fall time
-
-
5
ns
Port pins (except PIO2 and PIO3)
t
r(o)
t
f(o)
I
2
C-bus pins (PIO2 and PIO3)
output rise time
-
10
-
ns
output fall time
-
10
-
ns
t
f(o)
output fall time
V
IH
to V
IL
[1][2][3]
20 + 0.1 × C
b
-
-
ns
[1] Parameters are valid over operating temperature range unless otherwise specified.
[2] Typical ratings are not guaranteed. The values listed are at room temperature (25
°
C), nominal supply voltages.
[3] Bus capacitance C
b
in pF, from 10 pF to 400 pF.
11. Application information
11.1 XTAL1 input
The input voltage to the on-chip oscillators is limited to 1.8 V. When the oscillator is
driven by a clock in slave mode, it is recommended that the input is coupled through a
capacitor with C
i
= 100 pF. To limit the input voltage to the specified range, an additional
capacitor connected to ground (C
g
), attenuates the input voltage by a factor C
i
/ (C
i
+ C
g
).
In slave mode, a minimum input voltage of 200 mV (RMS) is needed.
11.1.1 XTAL and RTC Printed Circuit Board (PCB) layout guidelines
The crystal should be connected on the PCB as close as possible to the device’s
oscillator input and output pins. The load capacitors Cx1 and Cx2 and Cx3, in case of
third overtone crystal usage, must have a common ground plane. In addition, the external
components must also be connected to the ground plain.
Any loops must be made as small as possible to keep the noise coupled and parasitics in
via the PCB as small as possible. The values of Cx1 and Cx2 should be chosen smaller
accordingly to the increase in parasitics of the PCB layout.
The MPT612 IC can be used with accompanying software only. The MPT612 software
stack is designed to cater to different types of applications in the solar PV domain
ranging from simple MPPT charge controller to advanced systems on street lighting
applications to micro-inverters and DC-DC converters per panel.
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