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參數(shù)資料
| 型號(hào)： | ANP007 |
| 英文描述： | Dual Buck Converter |
| 中文描述： | 雙降壓轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 2/11頁(yè) |
| 文件大?。?/td> | 247K |
| 代理商： | ANP007 |
ANP007
Application Note
AP2001 Dual Buck Converter
1. AP2001 Specification
1.1 Features
- Dual PWM Control Circuitry
- Operating voltage can be up to 50V
- Adjustable Dead Time Control (DTC)
- Under voltage Lockout (UVLO) Protection
- Short Circuit Protection (SCP)
- Variable Oscillator Frequency...... 500Khz Max
- 2.5V voltage reference Output
- 16-pin PDIP and SOP packages
1.2 General Description
The AP2001 integrates Pulse-width-Modulation (PWM) control circuit into a single chip, mainly designs for
power-supply regulator. All the functions included an on-chip 2.5V reference output, two error amplifiers, an
adjustable oscillator, two dead-time comparators, UVLO, SCP, DTC circuitry, and dual common-emitter (CE)
output transistor circuit. Recommend the output CE transistors as pre-driver for Driving externally. The DTC
can provide from 0% to 100%. Switching frequency can be adjustable by trimming RT and CT. During low
VCC situation, the UVLO makes sure that the outputs are off until the internal circuit is operational normally.
1.3 Pin Assignments
Anachip Corp.
www.anachip.com.tw Rev. A.0 Feb. 20, 2003
2/11
1
2
3
15
14
13
12
11
10
9
8
7
6
5
4
16
CT
RT
EA2+
EA2-
FB2
DTC2
OUT2
VCC
GND
OUT1
DTC1
FB1
EA1+
EA1-
REF
SCP
( Top View )
PDIP/SOP
1.4 Pin Descriptions
Name
Description
CT
Timing Capacitor
RT
Timing Resistor
EA+
Error Amplifier Input(+)
EA -
Error Amplifier Input(-)
FB
Feedback Loop Compensation
DTC
Dead Time Control
OUT
Pre-driver Output
GND
Ground
VCC
Supply Voltage
SCP
Short Circuit Protection
REF
Voltage Reference
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