|
|
SD6860のメーカーはSILAN MICROELECTRONICSです、この部品の機能は「CURRENT MODE PWM+PFM CONTROLLER」です。 |
部品番号 | SD6860 |
| |
部品説明 | CURRENT MODE PWM+PFM CONTROLLER | ||
メーカ | SILAN MICROELECTRONICS | ||
ロゴ | |||
このページの下部にプレビューとSD6860ダウンロード(pdfファイル)リンクがあります。 Total 10 pages
SD686X
CURRENT MODE PWM+PFM CONTROLLER WITH BUILT-IN HIGH VOLTAGE
MOSFET
DESCRIPTION
SD686X is current mode PWM+PFM controller with built-in high-
voltage MOSFET used for SWPS, with low standby power and low
start current for power switch. In standby mode, the circuit enters
burst mode to reduce the standby power dissipation. The switch
frequency is 25~67KHz with jitter frequency for low EMI.
Built-in peak current compensation circuit makes the limit output
power stable even with different input AC voltage. Limit output
power can be adjusted through the resistor. Maximum peak current
compensation during power-on reduces pressure on transformer to
DIP-8-300-2.54
avoid saturation, the peak current compensation will decrease for
balance after power-on.
It integrates various protections such as undervoltage lockout,
overvoltage protection, overload protection, lead edge blanking,
primary winding overcurrent protection and thermal shutdown. The
circuit will restart until normal if protection occurs.
APPLICATIONS
FEATURES
* SWPS
* Energy Star 2.0 standard
* Lower start-up current (3µA)
* Various switching frequency following load for the higher
efficiency
* Frequency jitter for low EMI
* Overvoltage, overcurrent, overload and over temperature
protections.
* Adjustable limit output power
* Undervoltage lockout
* Built-in high voltage MOSFET
* Auto restart mode
* Peak current compensation
* Maximum peak current compensation for initialization
* Burst mode
* Cycle by cycle current limit
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.0
2010.03.12
Page 1 of 10
1 Page SD686X
ABSOLUTE MAXIMUM RATING
Characteristics
Symbol
Drain-Gate Voltage (RGS=1MΩ)
VDGR
Gate-Source (GND) Voltage
VGS
SD6860
Drain Current Pulse
note1
SD6861
SD6862
SD6863
IDM
SD6864
SD6860
Continuous Drain SD6861
Current
(Tamb=25°C)
SD6862
SD6863
ID
SD6864
SD6860
Signal Pulse
SD6861
Avalanche
Energynote2
SD6862
SD6863
EAS
SD6864
Power Supply Voltage
VCC,MAX
Feedback input voltage
VFB
Limit output power voltage
VADJ
Total Power Dissipation
PD
Darting
Operating Junction Temperature
TJ
Operating Temperature
Tamb
Storage Temperature
TSTG
Note: 1. Pulse width is limited by maximum junction temperature;
2. L=51mH, TJ=25°C(start)。
Rating
650
±30
4
6
8
11
14
1
1.5
2
3
4
15
30
68
140
200
28
-0.3~8
-0.3~8
1.5
0.017
+170
-25~+85
-55~+150
Unit
V
V
A
A
mJ
V
V
V
W
W/°C
°C
°C
°C
ELECTRICAL CHARACTERISTICS (for MOSFET, unless otherwise specified, Tamb=25°C)
Characteristics
Drain-Source Breakdown Voltage
Zero Gate Voltage Drain Current
Static Drain-Source
On Resistance
SD6860
SD6861
SD6862
SD6863
SD6864
Symbol
Test conditions
BVDSS VGS=0V, ID=50µA
VDS=650V, VGS=0V
IDSS VDS=480V, VGS=0V
Tamb=125°C
RDS(ON) VGS=10V, ID=0.5A
Min.
650
--
Typ.
--
--
-- --
-- 14.0
-- 8.0
-- 5.0
-- 4.0
-- 3.0
Max.
--
50
Unit
V
µA
200 µA
16.8
9.6
6.0 Ω
4.8
3.6
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.0
2010.03.12
Page 3 of 10
3Pages PIN CONFIGURATION
SD686X
PIN DESCRIPTION
Pin No.
1
2
3
4
5
6, 7, 8
Pin Name
GND
ADJ
VCC
FB
NC
DR
I/O Function description
I Ground
I ADJ pin
I Power supply pin
I/O Feedback input pin
- NC
O Drain pins.
FUNCTION DESCRIPTION
SD686X is designed for off-line SMPS, consisting of high voltage MOSFET, optimized gate driver and current
mode PWM+PFM controller which includes frequency oscillator and various protections such as undervoltage
lockout, overvoltage protection and overload protection. Frequency jitter generated from oscillator is used to
lower EMI. Burst mode is adopted during light load to lower standby power dissipation, and function of lead edge
blanking eliminates the MOSFET error shutdown caused by interference through minimizing MOSFET turning on
time. Peak current compensation reduces the pressure on transformer during circuit starts and output power limit
can be adjusted by resistor through ADJ pin. Few peripheral components are needed for higher efficiency and
higher reliability and it is suitable for flyback converter and forward converter.
1. Under Voltage Lockout and Self-Start
At the beginning, the capacitor connected to pin VCC is charged via start resistor by high voltage AC and the
circuit starts to work if voltage at VCC is 14.8V. The output and FB source current are shutdown if there is any
protection during normal operation and VCC is decreased because of powering of auxiliary winding. The whole
control circuit is shutdown if voltage at VCC is 7.6V below to lower current dissipation and the capacitor is
recharged for restarting.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.0
2010.03.12
Page 6 of 10
6 Page | |||
ページ | 合計 : 10 ページ | ||
|
PDF ダウンロード | [ SD6860 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
SD6860 | CURRENT MODE PWM+PFM CONTROLLER | SILAN MICROELECTRONICS |
SD6861 | CURRENT MODE PWM+PFM CONTROLLER | SILAN MICROELECTRONICS |
SD6862 | CURRENT MODE PWM+PFM CONTROLLER | SILAN MICROELECTRONICS |
SD6863 | CURRENT MODE PWM+PFM CONTROLLER | SILAN MICROELECTRONICS |