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PDF DP2535 Data sheet ( Hoja de datos )
| Número de pieza | DP2535 | |
| Descripción | High Precision CC/CV Primary-Side PWM Power Switch | |
| Fabricantes | DEPP Microelectronics | |
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Hay una vista previa y un enlace de descarga de DP2535 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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DP2535
High Precision CC/CV Primary-Side PWM Power Switch
GENERAL DESCRIPTION
DP2535 is a high performance offline PWM power
switch for low power AC/DC charger and adapter
applications. It operates in primary-side sensing
and regulation. Consequently, opto-coupler and
TL431 could be eliminated. High Precision
Constant Voltage (CV) and Constant Current (CC)
control are integrated as shown in the figure below.
In CC control, the current and output power setting
can be adjusted externally by the sense resistor Rs
at CS pin. In CV control, multi-mode operations are
utilized to achieve high performance and high
efficiency. In addition, good load regulation is
achieved by the built-in Cable Drop Compensation.
Device operates in PFM in CC mode as well at
large load condition and it operates in PWM with
frequency reduction at light/medium load. The chip
consumes very low operation current, it can
achieve less than 80mW standby power.
DP2535 offers comprehensive protection coverage
with auto-recovery features including
Cycle-by-Cycle current limiting, VDD Over Voltage
Protection (VDD OVP), short circuit protection,
built-in leading edge blanking, VDD under voltage
lockout (UVLO), OTP, etc.
High precision constant voltage (CV) and constant
current (CC) can be achieved by DP2535.
DP2535 is offered in SOP8 package..
TYPICAL APPLICATION
FEATURES
■ ± 5% Constant Voltage Regulation and
Current Regulation at Universal AC Input
■ Primary Side Regulation (PSR) Without TL431
and Opto-coupler
■ No Need for Control Loop Compensation
■ Programmable CV and CC Regulation
■ Multi-Mode PWM/PFM Operation
■ Output Short Load Protection
■ Less than 80mW Standby Power
■ Built-in Line Voltage and Primary Winding
Inductance Compensation
■ Built-in Adaptive Current Peak Regulation
■ Programmable Cable Drop Compensation
■ Audio Noise Free Operation
■ Built-in Over Temperature Protection (OTP)
■ Soft Gate Driver for Good EMI Performance
■ Built-in Leading Edge Blanking (LEB)
■ Cycle-by-Cycle Current Limiting
■ VDD Under Voltage Lockout with Hysteresis
(UVLO)
■ VDD OVP & Clamp
APPLICATIONS
Low Power AC/DC offline SMPS for
■ Cell Phone Charger
■ Digital Camera Charger
■ Small Power Adapter
■ Auxiliary Power for PC, TV etc.
■ Linear Regulator/RCC Replacement
www.depuw.com
- 1 -/9
Rev.2.0 AUG 2011
1 page  
DP2535
High Precision CC/CV Primary-Side PWM Power Switch
ELECTRICAL CHARACTERISTICS
(TA = 25OC, VDD=18V if not otherwise noted)
Symbol
Parameter
Supply Voltage Section (VDD Pin)
IVDD_st
Start-up current into VDD
pin
IVDD Op
IVDD standby
VDD_ON
Operation Current
Standby Current
VDD Under Voltage
Lockout Exit
VDD_OFF
VDD Under Voltage
Lockout Enter
VDD OVP
VDD_Clamp
VDD OVP Threshold
VDD Zener Clamp
Voltage
Feedback Input Section (INV Pin)
VINV_REF
Internal Error Amplifier
(EA) Reference Input
VINV_SLP
Short Load Protection
(SLP) Threshold
TINV_Short
Short Load Protection
(SLP) Debounce Time
VINV_DEM
Demagnetization
Comparator Threshold
Toff min
Toff max
ICable_max
Minimum OFF time
Maximum OFF time
Maximum Cable Drop
compensation current
Current Sense Input Section (CS Pin)
TLEB
CS Input Leading Edge
Blanking Time
Vcs(max)
TD_OCP
Current limiting threshold
Over Current Detection
and Control Delay
Over temperature Protection
TSD Thermal Shutdown
TRC Thermal Recovery
Power MOSFET Section (Drain Pin)
Power MOSFET Drain
VBR
Source
Breakdown
Voltage
Rdson
Static Drain-Source On
Resistance
Test Conditions
VINV=3V, VDD=20V
I(VDD ) = 7 mA
Min Typ Max Unit
2 20
1 1.5
0.5 1
15 16.3 17.5
8 9 10
28 30 32
32.5 34.5 36.5
uA
mA
mA
V
V
V
V
1.97 2.0 2.03
0.7
10
25
2
5
63
V
V
ms
mV
us
ms
uA
500
490 500 510
100
ns
mV
ns
--- 165
135
--
--
°C
°C
600
12
V
Ohm
www.depuw.com
- 5 -/9
Rev.2.0 AUG 2011
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet DP2535.PDF ] | |
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