STEVAL-ISB001V1 STMicroelectronics, STEVAL-ISB001V1 Datasheet - Page 5

BATTERY CHARGER CELL PHONE

STEVAL-ISB001V1

Manufacturer Part Number
STEVAL-ISB001V1
Description
BATTERY CHARGER CELL PHONE
Manufacturer
STMicroelectronics
Type
Battery Managementr
Datasheets

Specifications of STEVAL-ISB001V1

Main Purpose
Power Management, Battery Charger
Embedded
No
Utilized Ic / Part
STD1LNK60Z
Primary Attributes
1 Cell, 4.7V @ 400mA Out, CV/CC, 85 ~ 265VAC Input, 1.9W
Secondary Attributes
>65% Efficient, 51 ~ 91mW Standby Input Power
Input Voltage
85 V to 265 V
Output Voltage
5 V
Product
Power Management Modules
Silicon Manufacturer
ST Micro
Silicon Core Number
STD1LNK60Z-1
Kit Application Type
Power Management - Battery
Application Sub Type
Battery Charger
Kit Contents
Board
Rohs Compliant
No
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
STD1LNK60Z
Other names
497-5682

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
STEVAL-ISB001V1
Manufacturer:
STMicroelectronics
Quantity:
1
AN2228 - APPLICATION NOTE
1
1.1
Power Transformer Design Calculations
Taking transient load into account, the maximum output current is set as
Switching Frequency
The system is a variable switching frequency system (the RCC switching frequency varies with
the input voltage and output load), so there is some degree of freedom in switching frequency
selection. However, the frequency must be at least 25kHz to minimize audible noise.
Higher switching frequencies will decrease the transformer noise, but will also increase the
level of switching power dissipated by the power devices.
The minimum switching frequency and maximum duty cycle at full load is expressed as
where the minimum input voltage is 50kHz and 0.5, respectively.
The specifications:
Line frequency: 50~65Hz
V
V
I
O
AC
O
= 0.4A
= 5V
= 85~265V
I
O m ax
f
D
S m in
ma x
=
=
=
1.2I
0.5
50kHz
O
=
4.8A
1 Power Transformer Design Calculations
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