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UM10758 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 UM10758
기능 65W notebook adapter
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UM10758 데이터시트, 핀배열, 회로
UM10758
TEA1836DB1094 TEA1836XT + TEA1792T 65 W notebook
adapter
Rev. 1 — 4 December 2013
User manual
Document information
Info Content
Keywords
TEA1836DB1094, TEA1836XT, very low standby power consumption,
high peak power, active X-cap discharge, burst mode operation, flyback
converter, 65 W, notebook adapter, controller, converter, power supply,
demo board
Abstract
TheTEA1836XT is a high-featured low-cost DCM/QR flyback converter
controller. It provides high efficiency at all power levels including very low
no-load power consumption at nominal output voltage in burst mode
operation.
To minimize the risk of audible noise, burst mode operation is included for
the low load range. Switching in the audible frequency range is limited and
peak currents are low.
The TEA1836XT is intended for power supplies up to 75 W with extra high
peak power capabilities to enable supplying high peak power equipment
without requiring a PFC.
This document describes the 65 W notebook adapter demo board with the
TEA1836XT and TEA1792TS. The demo board provides an output of
19.5 V/3.34 A.
The average efficiency is above 91 % and the no-load power consumption
is below 30 mW.
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UM10758 pdf, 반도체, 판매, 대치품
NXP Semiconductors
UM10758
TEA1836DB1094 TEA1836 + TEA1792 65 W notebook adapter
1.3 TEA1792TS
The TEA1792TS is a member of the generation of Synchronous Rectifier (SR) controller
ICs for switched mode power supplies. Its high level of integration enables the design of a
cost-effective power supply with a very low number of external components.
The TEA1792TS is a controller IC dedicated to synchronous rectification on the
secondary side of discontinuous conduction mode and quasi-resonant flyback converters
1.4 Setup of the 65 W notebook adapter
The board is designed for universal mains (90 V (AC) to 264 V (AC)). When a DC input
voltage is applied, the power consumption is higher due to continuous activation of the
X-capacitor discharge function.
The demo board incorporates two subcircuits:
A DCM/QR type flyback converter
A Synchronous Rectifier (SR)
The purpose of the demo board is to show the operation of the TEA1836XT and
TEA1792TS in a single output supply. The performance is according today's general
standards including the DoE + CoC efficiency requirements. It can be used as a starting
point for further product development.
2. Safety warning
The board must be connected to the mains voltage. Touching the board during operation
must be avoided at all times. An isolated housing is obligatory when used in uncontrolled,
non-laboratory environments. A galvanic isolation of the mains phase using a variable
transformer is always recommended. Figure 1 shows the symbols by which these devices
can be recognized.
019aab173
019aab174
a. Isolated
b. Not isolated
Fig 1. Variable transformer (Variac) isolation symbols
UM10758
User manual
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 4 December 2013
© NXP B.V. 2013. All rights reserved.
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UM10758 전자부품, 판매, 대치품
NXP Semiconductors
UM10758
TEA1836DB1094 TEA1836 + TEA1792 65 W notebook adapter
5.3 S tandby power consumption
Power consumption performance of the total application board without load connected
was measured with a Yokogawa WT210 digital power meter. Integration time was set to
5 minutes to measure the average dissipated power.
Measurements were performed for 115 V/60 Hz, 230 V/50 Hz, and 264 V/50 Hz. Table 4
shows the average value of 10 boards.
Table 4. Standby power consumption: No-load
Condition
ENERGY STAR 2.0
requirement (mW)
115 V/60 Hz
300
230 V/50 Hz
300
264 V/50 Hz
300
No-load power consumption
(mW)
21
24
27
5.4 Current for changing between normal and burst mode operation
Table 5. Current for changing between normal and burst mode operation
Condition
115 V/60 Hz
230 V/50 Hz
From normal mode to burst mode operation
current (A)
0.630
0.725
power (W)
12.3
14.1
From burst mode to normal mode operation
current (A)
0.425
0.460
power (W)
8.3
9.0
5.5 Load regulation
The output voltage versus load current was measured at the PCB connector.
UM10758
User manual
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 4 December 2013
© NXP B.V. 2013. All rights reserved.
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부품번호상세설명 및 기능제조사
UM10758

65W notebook adapter

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