TDA16888G datasheet(6/39 Pages) SIEMENS

部件名	TDA16888G

功能描述	High Performance Power Combi Controller

Download	39 Pages

Scroll/Zoom	100%

制造商	SIEMENS [Siemens Semiconductor Group]

网页	http://www.siemens.com/

标志

6 / 39 page

TDA 16888

Semiconductor Group

6

Data Sheet 1998-05-06

2

Functional Description

Power Supply

The TDA 16888 is protected against overvoltages typically above 17.5 V by an internal

Zener diode Z3 at pin 9 (

V

CC) and against electrostatic discharging at any pin by special

ESD circuitry.

By means of its power management the TDA 16888 will switch from internal stand-by,

which is characterized by negligible current consumption, to operation mode as soon as

a supply voltage threshold of 14 V at pin 9 (

V

CC) is exceeded. To avoid uncontrolled

ringing at switch-over an undervoltage lockout is implemented, which will cause the

power management to switch from operation mode to internal stand-by as soon as the

supply voltage falls below a threshold of 11 V. Therefore, even if the supply voltage will

fall below 14 V, operation mode will be maintained as long as the supply voltage is well

above 11 V.

As soon as the supply voltage has stabilized, which is determined by the TDA 16888’s

power management and its soft-start feature at pin 13 (PWM SS), the PWM section will

be enabled by means of its internal bias control.

Protection Circuitry

Both PFC and PWM section are equipped with a fast overvoltage protection (C6)

sensing at pin 19 (PFC VS), which when being activated will immediately shut down both

gate drives. In addition to improve the PFC section’s load regulation it uses a fast but soft

overvoltage protection (OTA2) prior to the one described above, which when being

activated will cause a well controlled throttling of the multiplier output

Q

M.

In case an undervoltage of the PFC output voltage is detected at pin 19 (PFC VS) by

comparator C4 the gate drive of the PWM section will be shut down in order to reduce

the load current and to increase the PFC output voltage. This undervoltage shutdown

has to be prior to the undervoltage lockout of the internal power management and

therefore has to be bound to a threshold voltage at pin 9 (

V

CC) well above 11 V.

In order to prevent the external circuitry from destruction the PFC output PFC OUT

(pin 8) will immediately be switched off by comparator C2, if the voltage at pin 19

(PFC VS) drops to ground caused by a broken wire. In a similar way measures are taken

to handle a broken wire at any other pin in order to ensure a safe operation of the IC and

its adjoining circuitry.

If necessary both outputs, PFC OUT (pin 8) and PWM OUT (pin 10), can be shutdown

on external request. This is accomplished by shorting the external reference voltage at

pin 2 (

V

REF) to ground. To protect the external reference, it is equipped with a foldback

characteristic, which will cut down the output current when

V

REF (pin 2) is shorted (see

Figure 4).

类似零件编号 - TDA16888G

制造商	部件名	数据表	功能描述
Infineon Technologies A...	TDA16888G	507Kb / 39P	High Performance Power Combi Controller 2000-02-28

More results

类似说明 - TDA16888G

制造商	部件名	数据表	功能描述
Infineon Technologies A...	TDA16888	507Kb / 39P	High Performance Power Combi Controller 2000-02-28
Infineon Technologies A...	ICE1CS02	444Kb / 27P	Combi PFC/ PWM Controller Version 1.0, 25 July 2008
SHENZHEN FUMAN ELECTRON...	TC6562B	1Mb / 4P	High performance power factor correction controller
SHENZHEN FUMAN ELECTRON...	TC6562	1Mb / 4P	High performance power factor correction controller
SIFIRST TECHNOLOGIES NA...	SFL330	57Kb / 2P	High Performance, High Power Factor Flyback PWM Controller
ON Semiconductor	NCP1230	233Kb / 21P	Low-Standby Power High Performance PWM Controller February, 2011 ??Rev. 11
	NCP1230	242Kb / 21P	Low-Standby Power High Performance PWM Controller May, 2015 ??Rev. 12
	NCP1231	492Kb / 21P	Low?뭆tandby Power High Performance PWM Controller July, 2006 ??Rev. 4
	NCP1230	199Kb / 21P	Low-Standby Power High Performance PWM Controller January, 2008 - Rev. 9
	NCP1910A65DWR2G	396Kb / 37P	High Performance Combo Controller for ATX Power December, 2012 ??Rev. 1