TEA1523P datasheet(7/20 Pages) NXP

部件名	TEA1523P

功能描述	SMPS ICs for low-power systems

Download	20 Pages

Scroll/Zoom	100%

制造商	NXP [NXP Semiconductors]

网页	http://www.nxp.com

标志

7 / 20 page

TEA152X

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 04 — 14 September 2010

7 of 20

NXP Semiconductors

TEA152x

SMPS ICs for low-power systems

8.5 Demagnetization

The system operates in discontinuous conduction mode all the time. As long as the

secondary stroke has not ended, the oscillator will not start a new primary stroke. During

the first tsuppr seconds, demagnetization recognition is suppressed. This suppression may

be necessary in applications where the transformer has a large leakage inductance and at

low output voltages.

8.6 Minimum and maximum duty factor

The minimum duty factor of the switched mode power supply is 0 %. The maximum duty

factor is set to 75 % (typical value at 100 kHz oscillation frequency).

8.7 OverCurrent Protection (OCP)

The cycle-by-cycle peak drain current limit circuit uses the external source resistor RI to

measure the current. The circuit is activated after the leading edge blanking time tleb. The

protection circuit limits the source voltage to Vsource(max), and thus limits the primary peak

current.

8.8 Short-circuit winding protection

The short-circuit winding protection circuit is also activated after the leading edge blanking

time. If the source voltage exceeds the short-circuit winding protection voltage Vswp, the IC

stops switching. Only a power-on reset will restart normal operation. The short-circuit

winding protection also protects in case of a secondary diode short circuit.

8.9 OverTemperature Protection (OTP)

An accurate temperature protection is provided in the device. When the junction

temperature exceeds the thermal shutdown temperature, the IC stops switching. During

thermal protection, the IC current is lowered to the start-up current. The IC continues

normal operation as soon as the overtemperature situation has disappeared.

Fig 5.

Typical phase of drain ringing at switch-on (at N

× V

o =80V)

0

200

400

800

f (kHz)

phase

(deg)

40

20

−20

−40

0

mgt424

600

类似零件编号 - TEA1523P

制造商	部件名	数据表	功能描述
NXP Semiconductors	TEA1523P	103Kb / 17P	SMPS ICs for low-power systems Rev. 03-23 March 2009
	TEA1523P	462Kb / 20P	SMPS ICs for low-power systems Rev. 04 ??14 September 2010 Rev. 04-14 September 2010
	TEA1523P	149Kb / 20P	STARplugTM 2000 Sep 08
	TEA1523P-N2112	462Kb / 20P	SMPS ICs for low-power systems Rev. 04 ??14 September 2010 Rev. 04-14 September 2010
	TEA1523P/N2	614Kb / 2P	Cut costs and size for effi cient low-power supplies 2007

More results

类似说明 - TEA1523P

制造商	部件名	数据表	功能描述
NXP Semiconductors	TEA152X	103Kb / 17P	SMPS ICs for low-power systems Rev. 03-23 March 2009
	TEA152X	95Kb / 17P	SMPS ICs for low-power systems Rev. 03-23 March 2009
	TEA1523P-N2112	462Kb / 20P	SMPS ICs for low-power systems Rev. 04 ??14 September 2010 Rev. 04-14 September 2010
	SSL1623PH	85Kb / 15P	SMPS ICs for mains LED drivers Rev. 01-15 September 2008
	SSL152X	103Kb / 17P	SMPS ICs for mains LED drivers Rev. 02-10 March 2009
	SSL152X	94Kb / 17P	SMPS ICs for mains LED drivers Rev. 01-15 September 2008
Texas Instruments	TPS650241-Q1	865Kb / 32P	[Old version datasheet] POWER MANAGEMENT ICs FOR Li-ION POWERED SYSTEMS
	TPS650240	955Kb / 34P	[Old version datasheet] Power Management ICs for Li-Ion Powered Systems
	TPS650240	1Mb / 33P	[Old version datasheet] Power Management ICs for Li-Ion Powered Systems
	TPS650240	1Mb / 38P	[Old version datasheet] Power Management ICs for Li-Ion Powered Systems