HBQ5R0200 - Shindengen Electric Manufacturing Co., Ltd.

P.03

Password Vol.02-10-2-e HBQ Series

2

1

2

Quarter Brick-sized DC/DC Converter

HBQ Series

HBQ Series Outline

To achieve operation at lower voltages and high currents, together with small device size,

Shindengen developed its own synchronous rectification technology, while at the same time

replacing the conventional aluminum substrate with a thick glass-epoxy multi-layered substrate of

conductive material for high efficiency.

To reduce costs, the device structure is designed in consideration of ease of transformer

manufacture.

Available in six output voltages (some currently under development) between 1.2V and 5.0V.

* Quarter brick-size 57.9mm (W) x 36.8mm (D) x 11.0mm (H)

* High efficiency 91.5% (5.0V), 90.0% (3.3V)

* Forced cooling (heat sink not required)

* Wide input voltage range DC36.0V - 75.0V

* Ambient temperature -40°C–85°C (may be derated to suit ambient temperature)

* Remote ON/OFF function (positive logic, negative logic)

* Output remote sensing function

* Output voltage trimming (±10%)

* Input voltage monitoring circuit incorporated

* Over-current protection, overheat protection (automatic reset)

* Over-voltage protection

* Safety standards

Compatible with UL1950, CSA C22.2, No.950, EN60950

* CE certified

* Weight 30.5 g

Features and Functions

P.04

Password Vol.02-10-2-e HBQ Series

3

4

Product Lineup

The HBQ Series internal circuit is as shown below.

The use of synchronous rectification circuits at both input and output using forward current

amplification ensures high efficiency in operation.

Block Diagram

DC36~75V

5.0V 20A

3.3V 30A

2.5V 30A

1.8V 30A

1.5V 30A

1.2V 30A

100W

75W

54W

45W

36W

HBQ5R0200

HBQ3R3300

HBQ2R5300

HBQ1R8300

HBQ1R5300

HBQ1R2300

Input voltage range Output Maximum power output Model Efficiency (typ)*

Under development

91.5%

90.0%

* Input 48.0V, output current rating, measured at normal temperature.

Table 1 HBQ Series Lineup

Vout(+)

Vout(-)

SENSE(-)

SENSE(+)

TRIM

ON/OFF

Vin(-)

Vin(+)

C1 C2

C3

C4 C5

L1

L2

T1 L3

Q1

Q2

Q3

Control power

supply circuit

Input

monitoring

circuit

Control circuit

(pulse width control

circuit/over-current

sensing circuit)

Over-voltage

sensing circuit

Output voltage

sensing circuit

Fig.1 HBQ Series Block Diagram

P.05

Password Vol.02-10-2-e HBQ Series

5

Characteristics

HBQ3R3300 efficiency and droop characteristics are as follows.

Fig.2 HBQ3R3300 Efficiency Characteristics

Vin=48V

Vin=75V

Vin=36V

94.0

92.0

90.0

88.0

86.0

84.0

82.0

80.0

78.0

76.0

048121620242832

HBQ3R3300 Efficiency Characteristics (Ta=25°C)

Efficiency %

Output Current Io (A)

4

3

2

1

0010 20 30 40 (A)

(V)

Vin=36V

Vin=48V

Vin=75V

HBQ3R3300 Droop Characteristics (Ta=25°C) Over-current

Output Voltage Vout

Output Current Iout

Over-current protection setting

33.0A

Fig.3 HBQ3R3300 Droop Characteristics

P.06

Password Vol.02-10-2-e HBQ Series

6

High Efficiency

7

External Dimensions and Pin Descriptions

The following points were investigated during the design process to ensure high levels of

efficiency in operation.

* Secondary synchronous rectification drive circuit

* Selection of main and synchronous rectification MOSFETs

* Optimization of transformer layer configuration

A transformer layer configuration able to suppress linkage inductance was designed using

simulations, thus suppressing surge voltages at switching, and reducing semiconductor switching

losses.

* Dimensions in mm.

* Pins 1, 2, 3 and 5, 6, 7 are 1.02mm in diameter with

1.8mm diameter shoulders.

* Pins 4 and 8 are 1.57mm in diameter with no shoulders.

P.07

Password Vol.02-10-2-e HBQ Series

1

2

3

4

5

6

7

8

Vin(+)

Vout(-)

SENSE(-)

SENSE(+)

Vout(+)

TRIM

Vin(-)

ON/OFF

Pin Symbol Description

Input pin (+)

ON/OFF control input pin

Input pin (-)

Output pin (-)

Remote sensing pin (-)

Output voltage trimming pin

Remote sensing pin (+)

Output pin (+)

Fig.4 HBQ Series External Dimensions