JPS6412816A - Overvoltage protective circuit of switching regulator - Google Patents
Overvoltage protective circuit of switching regulatorInfo
- Publication number
- JPS6412816A JPS6412816A JP16836687A JP16836687A JPS6412816A JP S6412816 A JPS6412816 A JP S6412816A JP 16836687 A JP16836687 A JP 16836687A JP 16836687 A JP16836687 A JP 16836687A JP S6412816 A JPS6412816 A JP S6412816A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- output
- inverter transistor
- circuit
- protective circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Protection Of Static Devices (AREA)
- Dc-Dc Converters (AREA)
Abstract
PURPOSE:To make it an overvoltage protective circuit stable and with high accuracy, by keeping the operating voltage of overvoltage approximately constant, even if the flyback voltage and duty ratio vary. CONSTITUTION:The voltage of an input voltage source 1 is made pulsative with an inverter transistor 7. After transformed with an output transformer 3, it is rectified and smoothed with a diode 4 and a capacitor 5 and supplied to a load 18. An output voltage controlling circuit 2 controls the inverter transistor 7 so that the output voltage may be kept constant. If the flyback voltage generated at a detection winding 6 in turning OFF the inverter transistor 7 exceeds the reference voltage Vref1, a comparator 20 will generate a pulse of the predetermined voltage. This pulse is levelled off with a levelling-off circuit 28, and if its value exceeds the reference voltage Vref2, the output of a comparator 30 will be given to the output controlling circuit 2 so as to stop the operation of an converter or to drop the output voltage.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62168366A JPH0636650B2 (en) | 1987-07-06 | 1987-07-06 | Overvoltage protection circuit for switching regulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62168366A JPH0636650B2 (en) | 1987-07-06 | 1987-07-06 | Overvoltage protection circuit for switching regulator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6412816A true JPS6412816A (en) | 1989-01-17 |
JPH0636650B2 JPH0636650B2 (en) | 1994-05-11 |
Family
ID=15866754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62168366A Expired - Lifetime JPH0636650B2 (en) | 1987-07-06 | 1987-07-06 | Overvoltage protection circuit for switching regulator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0636650B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007018321A1 (en) * | 2005-12-26 | 2007-02-15 | Toyota Jidosha Kabushiki Kaisha | Vehicle control device, vehicle, and vehicle control method |
JP2011062002A (en) * | 2009-09-11 | 2011-03-24 | Asahi Kasei Toko Power Device Corp | Overvoltage protection circuit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56121366A (en) * | 1980-02-27 | 1981-09-24 | Yokogawa Hokushin Electric Corp | Switching regulator |
JPS62104589U (en) * | 1985-12-21 | 1987-07-03 |
-
1987
- 1987-07-06 JP JP62168366A patent/JPH0636650B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56121366A (en) * | 1980-02-27 | 1981-09-24 | Yokogawa Hokushin Electric Corp | Switching regulator |
JPS62104589U (en) * | 1985-12-21 | 1987-07-03 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007018321A1 (en) * | 2005-12-26 | 2007-02-15 | Toyota Jidosha Kabushiki Kaisha | Vehicle control device, vehicle, and vehicle control method |
JP2011062002A (en) * | 2009-09-11 | 2011-03-24 | Asahi Kasei Toko Power Device Corp | Overvoltage protection circuit |
Also Published As
Publication number | Publication date |
---|---|
JPH0636650B2 (en) | 1994-05-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4584517A (en) | Self-oscillating DC-DC switching voltage regulator | |
US5168435A (en) | Converter | |
US4321662A (en) | Power supply circuit for electrical apparatus | |
US4737898A (en) | Single-ended self-oscillating, DC-DC converter with regulation and inhibit control | |
JPS6412816A (en) | Overvoltage protective circuit of switching regulator | |
US5708572A (en) | Switched-mode power supply | |
US4924369A (en) | Regulated blocking converter wherein switch conduction time increases with higher output voltages | |
JPS57202873A (en) | Dc converter | |
JPH0357708B2 (en) | ||
JPS57174715A (en) | Switching power supply | |
SU1239695A1 (en) | Pulsed d.c.voltage stabilizer | |
KR930011247B1 (en) | Voltage regulator | |
KR970005103Y1 (en) | Over current compensating-circuit of switching power | |
KR910009373Y1 (en) | High voltage producing device | |
KR930007541Y1 (en) | Voltage regulator | |
JPS55133676A (en) | Switching regulator | |
JPH0124029B2 (en) | ||
SU1081629A1 (en) | Stabilized power source | |
JPS6223270Y2 (en) | ||
KR920002186Y1 (en) | Circuit recharging of battery | |
JPH0245432B2 (en) | SOFUTO * SUTAATOHOSHIKI | |
JPS57162966A (en) | Separately-excited dc/dc converter circuit | |
SU516158A1 (en) | Thyristor control device | |
CA2061228C (en) | Ringing choke converter | |
JPS6447271A (en) | Overcurrent protective circuit |