OB2570TCPA-H

90kHz 650V 9V~25V Flyback SOP-8 AC DC Converters, Offline Switchers

SOP-8RoHSActive

High Performance QR mode Primary-Side Power Switch

Manufacturer: OB
Manufacturer part #: OB2570TCPA-H
Store part #: C138859
Package / case: SOP-8
Category: AC DC Converters, Offline Switchers
Packaging: Tape & Reel (TR)

Datasheet (PDF)

Every Order Guarantee

100% Authentic · 30-Day Return or Replacement · policy

1,582 in stock

#C138859

Stock & price checked 5 days ago

Quantity	Unit price	Pack price
1+	₹49.76	₹49.76
10+	₹43.46	₹434.60
30+	₹40.85	₹1,225.50
100+	₹37.59	₹3,759.00
500+	₹36.06	₹18,030.00
1,000+	₹35.21	₹35,210.00

Quantity (min 1)

1 × ₹49.76

₹49.76

excl. GST

₹58.72 incl. 18% GST

Need volume or a scheduled delivery? Request a quote

Dispatch in 7–10 working days
GST invoice with every order
Standard pack: 4,000 per reel

OB2570TCPA-H

₹49.76 for 1 + GST

Specifications

Operating Temperature: -20℃~+85℃
Frequency - Switching: 90kHz
Voltage - Breakdown: 650V
Voltage - Supply: 9V~25V
Topology: Flyback
Features: Constant Current Mode (CC);Constant Voltage (CV);Over Voltage Protection;Short Circuit Protection;Under Voltage Protection;Overtemperature protection (OTP)
Feedback System: Primary-side feedback
Working Mode: QR;PFM Modulation

Packaging & compliance

RoHS: RoHS
Lifecycle: Active
Packaging: Tape & Reel (TR)
Standard pack: 4,000 / Reel
Sold per: Piece
Minimum order: 1
Unit weight: 0.17 g

Overview

OB2570x is an excellent primary side regulation controller with CC/CV operation for medium level power AC/DC charger and adapter applications. The device integrates an internal power MOSFET and operates in QR mode to provide high efficiency along with several functions of built-in protections. It removes the need for secondary feedback circuitry to lower the total bill of material cost. Proprietary Constant Voltage (CV) and Constant Current (CC) control is integrated. In CV control, the controller changes the mode of operation according to load condition. At full loading, the controller operates in quasi-resonant (QR) mode in the universal line voltage. The primary side regulation power supplies up to high power without the efficiency limitation of DCM or audible noise. In CC control, OB2570x samples the Vcs peak current and the demagnetization pulse to regulation the output current. The current and output power setting can be adjusted externally by the sense resistor Rs at CS pin. OB2570x offers comprehensive protection coverage with auto-recovery feature including Cycle-by-Cycle current limiting, VDD OVP, OLP, SCP, OTP etc. OB2570x consumes less than 75mW input power at no - load condition with high line voltage.

Applications

Medium level Power AC/DC offline SMPS for
Cell phone charger
Tablet PC AC/DC adapter
Set-top box power supplies

Key features

Primary-side sensing and regulation operates in QR mode without TL431 and opto-coupler
High precision constant voltage and current regulation at universal AC input
Programmable CV and CC regulation
Integrated power MOSFET
Good dynamic response
Built-in line compensation for tight CC regulation
Built-in fixed cable compensation
Built-in primary winding inductance compensation
Built-in control loop compensation
Built-in leading edge blanking (LEB)
Ultra low start-up current and low operating current
Comprehensive protection coverage with auto-recovery
VDD over voltage protection (VDD OVP)
VDD under voltage lockout with hysteresis (UVLO)
Cycle-by-cycle current limiting
Feedback open loop protection (OLP)
Output short circuit protection (SCP)