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PDF PN8360 Data sheet ( Hoja de datos )
| Número de pieza | PN8360 | |
| Descripción | High Precision CC/CV Primary-Side Converter | |
| Fabricantes | Chipown | |
| Logotipo |  |
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PN8360
Chipown
High Precision CC/CV Primary-Side Converter
General Description
The PN8360 consists of a high precision CC/CV primary side controller and a 650V power MOSFET, specifically designed for a
high performance low power AC/DC charger and LED lighting with minimal external components. PN8360 operates in
primary-side sensing and regulation, so opto-coupler and TL431 could be eliminated. PN8360 offers complete protection coverage
with automatic self-recovery feature including Cycle-by-Cycle current limiting protection (OCP), over voltage protection (OVP)
and feedback loop open protection (OLP), over temperature protection (OTP) and short circuit protection etc. Internal HV Start-up
circuit and the chip’s very low consumption help to meet the strict standby power standard. In CC control, the current and output
power setting can be adjusted externally by the sense resistor Rcs at CS pin. In CV control, PFM operations are utilized to achieve
high performance and high efficiency. In addition, good load regulation is achieved by the built-in cable drop compensation.
Features
Applications
■ Internal 650 V avalanche-rugged power MOSFET
■ Switch AC/DC Adaptor and Battery Charger
■ ±5% Constant current Regulation at Universal AC input
■ LED Light
■ Primary-side Sensing and Regulation Without TL431 and
Opt coupler
Package/Order Information
■ Programmable CV and CC Regulation
■ Programmable Cable Drop Compensation
VDD
DIP8
GND
■ Built-in Primary winding inductance compensation
COMP
GND
■ Internal HV Start-up Circuit
■ Excellent Protection Coverage:
FB SW
CS SW
Over Temperature Protection (OTP)
VDD Under Voltage Lockout (UVLO)
Cycle-by-Cycle Current Limiting (OCP)
Open Loop Protection (OLP)
VDD Over Voltage Protection (OVP)
Auto- recovery protection Mode
Order codes
PN8360SSC-R1
PN8360SSC-R1B
PN8360SSC-R1C
PN8360NEC-T1
Package
SOP7
SOP7
SOP7
DIP8
Vcable
3%
6%
0%
3%
Typical power
85~265 VAC
12W
12W
12W
15W
PN8360NEC-T1B
DIP8
6%
15W
PN8360NEC-T1C
DIP8
0%
15W
Typical Application
13/F, Building C, Wangzhuang Technology Innovation Center, Longshan Road,New District, Wuxi Tel: +86(510)85217718 http://www.chipown.com.cn Rev.A.1503 1 / 7
1 page  
PN8360
Operation Description
1. Startup
At start up, the internal high-voltage current source supplies the internal bias and charges the external VDD capacitor.
When VDD reaches 15V, the device starts switching and the internal high-voltage current source stops charging the
capacitor. The device is in normal operation provided VDD does not drop below 8V. After start up, the bias is
supplied from the auxiliary transformer winding.
2. CC Operation Mode
In CC operation, The PN8360 captures the auxiliary flyback signal at FB pin through a resistor divider network. The
pulse width of the auxiliary flyback signal determines the PN8360 oscillator frequency. The higher the output voltage
is, the shorter the pulse width is. And the chip oscillator frequency is higher, thus the constant output current can be
achieved.
3. CV Operation Mode
In CV operation, The PN8360 captures the auxiliary flyback signal at FB pin through a resistor divider network. The
voltage of the auxiliary flyback signal determines the PN8360 oscillator frequency. In full load mode, the chip
oscillator frequency decreases while the output current decreases. In no load standby mode, the frequency is further
reduced to minimize standby power.
4. Current Sensing and Leading Edge Blanking
Cycle-by-Cycle current limiting is offered in PN8360. The switch current is detected by a sense resistor into the CS
pin. The CC set-point and maximum output power can be externally adjusted by external current sense resistor at CS
pin.
An internal leading edge blanking circuit chops off the sensed voltage spike at initial power MOSFET on state so that
the external RC filtering on sense input is no longer needed.
5. Programmable Cable drop Compensation
The Cable drop compensation block compensates the voltage drop across the cable. As the load current decreases
from full load to no load, the voltage drop across the cable decreases. In the no load mode, the block decrease the CV
set-point and inversely in the full load mode the block increase the CV set-point. The compensation is determined by
the chip inside setting, different version chip could meet different compensation ranges.
6. Protection Control
The PN8360 has several self-protection functions, such as Over-Voltage Protection, Over-Temperature Protection,
Feedback Loop open Protection, Output short circuit Protection, CS resistor short circuit Protection and Under
Voltage Lockout on VDD. All protections are implemented as auto-restart mode.
13/F, Building C, Wangzhuang Technology Innovation Center, Longshan Road,New District, Wuxi Tel: +86(510)85217718 http://www.chipown.com.cn Rev.A.1503 5 / 7
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet PN8360.PDF ] | |
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