STEVAL-ISA203V1 STMICROELECTRONICS | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 7

Technical content

Features

  • DC-DC flyback converter based on: – PM8804 PWM peak current mode controller, and – SRK1000 adaptive synchronous rectification controller
  • Input voltage range 42 – 56 V DC
  • Switching frequency: 200 kHz
  • Output: – Power: 60 W – Voltage: 12 V DC – Current: 5 A
  • Peak efficiency > 92%
  • RoHS compliant

Description

STEVAL-ISA203V1 evaluation board is designed to demonstrate high efficiency DC- DC conversion with 60 W output (12 V/5 A) from 42 to 56 VDC input (48 V nom.), which is especially suitable for telecom applications. The power conversion stage is based on a flyback topology managed by the PM8804 controller, which features all the integrated circuitry necessary for a compact and efficient 48 V converter. The highly configurable controller includes a programmable oscillator for switching frequency regulation up to 1 Mhz, adjustable slope compensation, dual complementary low-side drivers with programmable dead time, programmable soft start, soft turn off and a programmable current sense blanking time. The secondary side employs the SRK1000 adaptive synchronous rectification controller for flyback converters. Product summary

48 V flyback converter

12 V – 5 A based on

N-channel 80 V, 3.0 mΩ typ., 120 A STripFET F7 Power MOSFET in PowerFLAT 5x6 package STL130N8F7 Application Server & Telecom Power

48 V flyback converter 12 V – 5 A based on PM8804

DB4096 - Rev 1 - February 2020 For further information contact your local STMicroelectronics sales office.

1 Application overview

equipment. The board can supply an output voltage 12 V and load current up to 5 A. P-channel MOSFET referred to PGND in active clamp flyback topology. STL130N8F7 secondary MOSFET. Figure 1. STEVAL-ISA203V1 block diagram

2 Board layout

Figure 2. STEVAL-ISA203V1 top layer Figure 3. STEVAL-ISA203V1 bottom layer

3 Electrical and efficiency characteristics

Table 1. Electrical specifications of STEVAL-ISA203V1 the efficiency of the board at different input voltages and load conditions. Figure 4. Efficiency at different load conditions of STEVAL-ISA203V1 Table 2. STEVAL-ISA203V1 MOSFET temperatures at maximum load (5 A)

4 Schematic diagrams

Figure 5. STEVAL-ISA203V1 board schematic

Revision history

Table 3. Document revision history 06-Feb-2020 1 Initial release.