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参数资料
| 型号： | APW7047 |
| 厂商： | Anpec Electronics Corporation |
| 英文描述： | Dual Advanced PWM and Source-Sink Linear Controller |
| 中文描述： | 双先进PWM和源库线性控制器 |
| 文件页数： | 4/12页 |
| 文件大小： | 154K |
| 代理商： | APW7047 |
Copyright
ANPEC Electronics Corp. Rev. A.
Rev.A.1
- May., 2002
APW 7047
www.anpec.com.tw
4
APW7047
Typ.
Symbol
Parameter
Test Conditions
Min.
Max.
2
Unit
I
VIN
VIN Input Bias Current
PWM Controllers Gate Drivers
UGATE1,2 Source, LGATE1 SourceV
CC
=12V
VIN=2.5V
uA
I
UGATE
V
UGATE1,2
=6V
V
CC
=12V,V
UGATE1,2
=6V
0.74
A
R
GATE
Protection
UGATE1,2 Sink, LGATE1 Sink
3
4
VSEN1,2 OVP trip point
(VSEN1/V
CORE
and VSEN2/V
MEM
)
VSEN1,2 O.V. Hysteresis
Ocset Current Source
Soft start Current
VSEN Rising
115
120
2
%
I
OCSET
I
SS
Vocset=3V
170
200
28
230
uA
Functional Pin Description
VCC (Pin 1)
Provide a +12V bias supply for the IC to this pin. This
pin also provides the gate bias charge for the
MOSFETs of the SOURCE-SINK regulator. The volt-
age at this pin is monitored for Power-On Reset (POR)
purposes.
UGATE1 (Pin 2)
Connect this pin to the upper MOSFET gate of the
PWM1 converter. This pin provides the gate drive for
the MOSFET.
PHASE1 (Pin 3)
Connect this pin to the PWM1 converter’s upper
MOSFET source.This pin is used to monitor the volt-
age drop across the MOSFET for over-current
protection.
SS (Pin 4)
Connect a capacitor from this pin to ground.This
capacitor, along with an internal 28uA current source,
sets the soft-start interval of all power controls and
preventing the outputs from overshoot as well as limit-
ing the input current .
SD (Pin 5)
The pin shuts down all power outputs. A TTL compat-
ible , logic level high signal applied at this
pin immedi-
ately discharges the soft-start capacitor,disabling all
power outputs. When re-enabled, the IC undergoes a
new soft-start cycle. Left open, this pin is pulled low
by an internal pull-down resistor, enabling operation.
SOURCE (Pin 6)
Connect this pin to the upper MOSFET gate drive of
the SOURCE-SINK regulator. This pin drives the up-
per external MOSFET as a sourcing regulator.
SINK (Pin 7)
Connect this pin to the lower MOSFET gate drive of
Electrical Characteristics ( Cont.)
Unless otherwise specified, these specifications apply over V
CC
=V
BOOT
=12V and T
A
=0~70°C.
Typical values refer to T
A
=25°C.
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